Technical Journals, Papers, and Books

International Hydrofoil Society Presents… 

Hydrofoil Bibliography
Hydrofoil References In Technical Journals, Papers, and Books(Mostly, But Not Entirely, Limited to Engine Powered Vessels)

Last Update January 29, 2016

NOTE: WORK IN PROGRESS, LINKS TO BE COMPLETED ASAP


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  1. Abbott and Von Doenhoff, ” Theory of Wing Sections” – Old but classic book still published in paperback form by Dover Publications, Inc.
  2. Acosta, A.J., “Hydrofoils and Hydrofoil Craft,” 1973, 24 pages, California Institute of Technology, Pasadena CA USA. Sponsored in part by Office of Naval Research, Washington, DC and Naval Ship Research and Development Center, Washington, DC. Published in Annual Review of Fluid Mechanics, v5 p161-184 1973. Abstract: The successful achievements of hydrofoil craft to date and the possibility of high speeds at sea are due to the greatly increased understanding in recent years of the flow past hydrofoils and to the development of foil configurations and control systems for coping with the roughness of the sea surface. It seems appropriate, therefore, to link the discussion of hydrofoils with that of progress in the craft. The general characteristics of hydrofoil craft are reviewed together with some representative modern examples. Some physical aspects of the flow past hydrofoils are described, followed by a resume of some of the recent methods used in design and analysis of hydrofoils. Available from: National Technical Information Service; 5285 Port Royal Road; Springfield VA 22151 USA. Source Data: AD-760230 u7313. Order Number: AD-760230
  3. Alternative Hullforms for High-Performance Ferries – SNAME technical report examines the hullforms available for high-performance ferries, including planing monohulls, catamarans and other multihull vessels, small-waterplane vessels, hydrofoils, hovercraft, air-cushion vehicles, surface-effect ships, WIGs, and channel-flow-wing craft. For each type, attributes and issues are cited, and tables of principal characteristics and photographs of examples are provided. This Technical and Research Report R-51, may now be ordered from cpujols@sname.org. The 35-page report, with 22 illustrations, is being issued as a compact disk, priced at $30 ($15 for SNAME members).
  4. Altman, R., “The Design of Supercavitating Hydrofoil Wings,” Technical Report 001-14, Hydronautics Inc., April 1968
  5. Aroner, R. and R. M. Hubbard, “DEH, A High Endurance Escort Hydrofoil For the Fleet,” AIAA Paper No. 74-311, AIAA/SNAME Advanced Marine Vehicles Conference, San Diego, California, February 25-27 1974.
  6. Asseo, S.J. and F. Dell’Amico, “An analysis of three hydrofoil boat control systems,” Cornell Aeronautical Laboratories, Inc. Buffalo, 1965.
  7. “Assessment of High Speed Waterborne Vessels and Their Builders,” Advanced Marine Systems Assoc, Inc; 9421 Chatteroy PL; Gaithersburg MD; Report No. UMTA-IT-32-0001-84-5, Aug 84, 191 pages. Available from NTIS, 5285 Port Royal RD; Springfield VA 22161. Abstract: Describes eleven of the most prominent firms in the design and construction of commercial high speed watercraft (HSW) craft, both domestic and international. The objective of this report is to identify and present data on the significant HSW vehicles currently available and their builders. For a number of vehicles currently in production and in operation, data is presented on the engineering and economic characteristics, energy efficiency, maintainability, reliability, ride quality, safety, comfort, accessibility to handicapped persons, and capital and operating costs. Engineering and economic comparison of these high speed vessels are also made with other modes of transportation.
  8. Astolfi J-A, Dorange P., Billard J.-Y., Cid Tomas I., 2000, “An experimental investigation of cavitation inception and development on a two-dimensional Eppler hydrofoil,” March 2000, Journal of Fluids Engineering, Vol. 122, pp. 164-173.
  9. Bailly-Cowell, G. M. (1967). “Hamburg to las Palmas on Foils.” Hovering Craft and Hydrofoil, 6(12) pp: 10-12
  10. Baker, Jr., Robert M. L., and James S. Douglas. “Preliminary Mathematical Analysis of a Rigid-Airfoil, Hydrofoil Water Conveyance.” Journal of Hydronautics 5.4 (1971): 140-147.
  11. Ball, Edgar Scott, Jr., Lessons Learned From the Patrol Hydrofoil Missile (PHM) Program, Thesis for Master of Science in Management, Naval Postgraduate School, Monterey CA, March 1979. “The PHM Project began as a major NATO acquisition program consisting of 60 or more ships for international purchase. Today the program cosists of just six ships for the United States alone. This thesis reviews the history of the program, the design considerations and the current problems experienced by the Program Manager. An analysis of the rationale behind the decisions which led to the reduction in scope of the program suggests that factors inherent to the current systems acquisition process cause the cut back in the program and that these were independent of the Program manager’s efforts. The results of the analysis suggest that these factors have the potential to affect the outcome of any acquisition program, no matter how well the hardware performs.” Approved for Public Release. Copy located in the Defense Technical Information Center, Defense Acquisition University, Fort Belvoir VA. http://www.library.dau.mil.
  12. Bender, E., Remington, P., “Hydrofoil Design for Minimum Control Power” B.H. Beranek and Newman Report 2511, 1973.
  13. “Bibliography – High Speed Waterborne Passenger Operations and Craft,” Authors: Advanced Marine Systems Associates, Inc, Urban Mass Transportation Administration, and Peat, Marwick, Mitchell and Co.; Report No. UMTA-IT-32-0001-84-2. Aug 84, 135 pages. Available from: Office of Technical Assistance, UMTA, 400 7th ST SW; Washington DC 20590 USA. Abstract: One of seven reports written under this contract to describe high speed waterborne passenger transportation, review its applicability in the US, and document its development in the free world. This report presents a comprehensive listing of available literature (in English) on the subject of High speed waterborne passenger transportation. Each reference in the bibliography indicates the source of the document, and whether the document contains information in the following categories: vehicle characteristics (e.g., craft features, performance and human factors); design consideration’; and economic/financial analysis of such services. Over 1,200 document written prior to Sep 82 are cited.
  14. Blade and Hydrofoil Section Design – The Society of Naval Architects and Marine Engineers (SNAME) has published the technical bulletin Blade and Hydrofoil Section Design. This bulletin includes the Blade and Hydrofoil Section Design Codes with a 29 page Owner’s Guide, and a 184 page Technical Report. It updates and complements T&R Bulletin 1-17. The Design Codes and Owner’s Guide provide tools for the design and performance evaluation of blade and hydrofoil sections. The programs are provided in both DOS and Mac formats and will run on most personal computers. The Technical Report provides analytical background information and is of interest primarily to those who wish to adapt or enhance the programs. This new publication is identified as Technical and Research Bulletin 1-45. It is being issued as a CD, and may be ordered by contacting cpujols@sname.org or by calling 201-798-4800. It is priced at $50 ($25 for SNAME members).
  15. Bovee, E.C., “Design and Construction of the PC(H) Hydrofoil Patrol Craft.” Paper Presented to Northwest Section Meeting, SNAME, Seattle WA, 5-6 October 1963.
  16. Brown, DK, JP Catchpole, and AM Shand, “The Evaluation of the Hydrofoil HMS SPEEDY,” Royal Institution of Naval Architects Transactions, Volume: 126, 1984, 16p., ISSN: 0035-8967. HMS SPEEDY was procured in 1979 to provide the Royal Navy with an opportunity to gain practical experience in the operation and support of a modern hydrofoil, to establish technical and performance characteristics, and to assess the capability of a hydrofoil in the UK ‘Offshore Tapestry’ role. The present paper describes the operational and technical evaluation of HMS SPEEDY undertaken in 1980-82, and outlines the results obtained. Supplemental Information: Transactions paper; Also in Naval Architect, January 1984 issue
  17. Buermann, T.M., Leehey, LCDR P. (USN), and CDR J. J. Stillwell (USN), “An Appraisal of Hydrofoil Supported Craft.” Paper Presented at SNAME Meeting, New York, NY, 12-13 November 1953.
  18. Bullock, Otis R. and Brian Oldfield, “Production PHM Hull Structure Producibility Design,” AIAA/SNAME Advanced Marine Vehicles Conference, Arlington, Virginia, September 1976.
  19. Charlier, Jacques J., (Catholic University of Louvain), “Jetfoils on the Ostend-Dover Route: A Technical and Commercial Appraisal,” Maritime Policy and Management, Vo. 17, Issue 2, Apr 90, pp 123-132.
  20. Chatterton, H.A., T.H. Sarchin, “Challenges to Hydrofoil Ship System Technology”, Naval Engineers Journal, February 1972.
  21. Chen, Jiahn-Horng, “A Regression Relation between Cavitation Number and Cavity Length for Two-Dimensional Supercavitating Hydrofoils,” Proceedings, National Science Council ROC(A) Taipei. (Link broken “http://nr.stic.gov.tw/” on 040120wnw)
  22. Christy, John, “Punch-Packing Sea Skimmers — Boeing’s Hydrofoils Are Some of the Fastest Water-Fliers Afloat Today,” International Combat Arms, The Journal of Defense Technology, May 1985 p.39, 68-74. (Background and capability summary and photos of PHMs, plus historical reference to and photos of Soviet hydrofoils such as Mo VI, PA-4, the P-6, P-8, P-10 classes if torpedo boats (foils retrofitted), Turya class, Matka class, and Pchela class, Sparviero, Nibbio class, TUCUMCARI, FLAGSTAFF, et al.
  23. Ciancitto, Antonino, Evoluzione dei Motori e Delle Macchine Terrestri, Marittime, Aeree e Spaziali… Dell’auto Electtrica al Naviplano dal Disco Volante al Razzo Cosmico. A technical book on the evolution of the engines and of the machines for land, sea, air and space. From the electric car to the hydrofoil ship; from the flying saucer to cosmic rockets. Evolution of helicopters and jet engines. Text in Italian. Well illustrated with technical line drawings and innumerable scientific formulae. 142 pages. Softcover.
  24. Clark, D.J.,W.C. O’Neill, D.C. Wight, “Balancing Mission Requirements and Hydrofoil Design Characteristics”, AIAA/SNAME Advanced Marine Vehicles Conference, April 1978, Paper 78-725.
  25. Coates, J.T.S., R.G. Merritt, and T.C. Weaton, “Why PHM? Further Studies on Roles and Missions”, AIAA Paper 78-729, AIAA/SNAME Advanced Marine Vehicles Conference, San Diego, California (April 17-19, 1978)
  26. Colucci, Frank; “Sweeping the Sea,” Air International, Vol. 49, No. 2, August 1995, pp 73-78. Discusses airborne mine sweeping system history. It includes two photos of the Mk 105 hydrofoil sled, one of it being towed behind an MH-53E helicopter.
  27. Connor, G. G. (1967). “Power for Hydrofoils.” Hovering Craft and Hydrofoil, Vol. 6 No. (11) pp: 8-13
  28. Crew, P. R., “The Hydrofoil Boat; Its History and Future Prospects.” Quarterly Transactions, The Institution of Naval Architects, Vol. 100, No. 4, October 1958.
  29. Crimi, Peter. “Experimental Study of the Effects of Sweep pn Hydrofoil Loading and Cavitation.” Journal of Hydronautics 4.1 (1970): 3-9.
  30. Davis, Jack (Port Authority of New York and New Jersey), “Those Fabulous Flying Ferries,” Portfolio, Vol. 3, Issue 1, Mar 90, pp 33-40. Document Source: Northwestern University Transportation Library DAM2927
  31. Dogan, P., Decanico, F., Gamber, F. Mederios, R., “Hydrofoil Universal Digital Autopilot (HUD AD), Phase I Final Report” Charles Stark Draper Laboratory Report R-745, January 1973.
  32. Dogan, P., Gamber, F. S. and Decanto, F. T., “Hydrofoil Universal Digital Autopilot (HUDAP), Phase I Final Report.” Charles Stark Draper Lab, Mass. Inst. of Tech., Report 745, January 1973.
  33. Duff, Karl M., H. Schmidt, and M.R. Terry, “The NATO PHM Ship and Weapons Systems Technical Evaluation Program”, AIAA Paper 76-848, AIAA/SNAME Advanced Naval Vehicles Conference, Arlington, VA, Sept 20-22, 1976.
  34. Duff, Karl M., “The NATO Patrol Missile Hydrofoil (PHM)”, AIAA Paper No. 72-596, AIAA/SNAME/USN Advanced Marine Vehicles Meeting, Annapolis, MD, July 17-19, 1972.
  35. Duff, Cdr. Kark M. “The NATO Patrol Missle Hydrofoil (PHM).” Journal of Hydronautics 7.3 (1973): 97-103.
  36. Eames, M. C. and T. G. Drummond, “HMCS BRAS D’OR-Sea Trials and Future Prospects”, Transactions Royal Institute of Naval Architects, Vol. 115, 1973.
  37. Eames, M. C. and Jones, E. A., “HMCS BRAS D’OR-An Open Ocean Hydrofoil Ship.” Transactions Royal Institute of Naval Architects, Vol. 113, 1971.
  38. Eames, M. C., “A Review of Hydrofoil Development in Canada.” Paper Presented at 1st International Hydrofoil Society Conference, Ingonish Beach, Nova Scotia, Canada, 27-30 July 1982.
  39. Ellsworth, W. M., “The US Navy Hydrofoil Development Program-A Status Report.” AIAA Paper 67-351, Presented at AIAA/SNAME Advanced Marine Vehicles Meeting, Norfolk, VA, 22-24 May 1967.
  40. Ellsworth, W. M., “Twenty Foilborne Years – The US Navy Hydrofoil HIGH POINT, PCH-1″, David Taylor Research Center, 1987.
  41. Eppler, Richard, “Airfoil Design and Data,” Springer-Verlag, 1990.
  42. “Evaluation of the Boeing JETFOIL SPEEDY in the Fishery Protection Role”, Article in Combat Craft, p. 158, July 1983.
  43. Existing and Former High Speed Waterborne Passenger Transportation Operations in the United States, Aug 1984, Report No: UMTA-IT-32-0001-84-3; Publisher/Corporate Author(s): Peat, Marwick, Mitchell and Company; 1990 K Street, NW; Washington DC 20006, Urban Mass Transportation Administration; Office of Technical Assistance, 400 7th Street, SW; Washington DC 20590; and Advanced Marine Systems Associates, Inc.; 9421 Chatteroy Place; Gaithersburg MD 20879 USA. Abstract: This is one of seven reports written under this contract to describe high speed waterborne passenger transportation, review its applicability in the United States, and document its development in the free world. This report reviews the history of high speed waterborne passenger transportation in the United States. High speed is defined as operating at 25 knots or greater. A summary is included which outlines the principal causes of success or failure of the 19 U.S. operations in the report. Failure of high speed waterborne transportation as a public transit mode in the United States has usually been due to some combination of the following four factors: use of an unproven technology; use of only one boat; insufficient market research, resulting in the selection of routes with insufficient market potential: and insufficient capital. Available from: Urban Mass Transportation Administration; Office of Technical Assistance, 400 7th Street, SW; Washington DC 20590 USA
  44. Ford, T. (1967). Seaspeed. Hovering Craft and Hydrofoil, 6(12) pp: 30-31, 6
  45. Frauenberger, H.C., “SHIMRIT Mark II Hydrofoil For The Israeli Navy”, Paper Presented at 1st International Hydrofoil Society Conference, Ingonish Beach, Nova Scotia, Canada, 27-30 July 1982.
  46. Gallington, Roger W. “Ram Wing Surface Effect Boat.” Journal of Hydronautics 7.3 (1973): 118-123.
  47. Gamber, F. and R. Medeirus(Medetrios?), “Hydrofoil Universal Digital Autopilot (HUDAD) Phase II Final Report”, Charles Stark Draper Laboratory, Report R-817, May 1974.
  48. Gebhardt, John C., “The skin friction of a hydrofoil near a free surface,” Ann Arbor, University of Michigan, 1968.
  49. Gibson, G. R. (1967). “Expo 67 – c
  50. Giuffrida, G. (1967). “Improvement in Foilborne Navigation.” Hovering Craft and Hydrofoil, 6(11) pp: 17-19
  51. Graham, C., T.E. Fahy, J.L. Grostick, “A Comparative Analysis of Naval Hydrofoil and Displacement Ship Design”, SNAME Transactions, 1976.
  52. Graig, W. A. “Comment on “Canadian Advances in Surface-Pierciing Hydrofoils”.” Journal of Hydronautics 8.2 (1974): 74-76.
  53. Grimm, Martin, “Transverse Stability of Surface Piercing Hydrofoils,” International Hydrofoil Society Newsletter, Summer 1998, pp. 7-9. The stability criteria presented in the IMCO Code of Safety for Dynamically Supported Craft, now superseded by the International Maritime Association (IMO) High Speed Craft Code, provides an equation for assessing foilborne metacentric height (GM) of surface-piercing hydrofoils in the design stage. An alternative method which addresses several limitations of this equation has been implemented in a short computer program, and representative results for typical foil designs are presented. A more extensive assessment of the results, a source code listing, and example input files are available from the author to those willing to examine this subject in further detail and share their findings. Click Here to view the article in Adobe Acrobat format.
  54. Griswold, John W., “PHM/JETFOIL Reliability and Service Experience,” AIAA/SNAME Advanced Marine Vehicle Conference, Arlington, Virginia, September 1976.
  55. “Grumman M161 – Israel’s Combat Hydrofoil”, Defense Attaché, pp 11-21, No. 5, 1981.
  56. “Guide For Implementing High Speed Waterborne Passenger Transportation Services,” Authors: Advanced Marine Systems Associates, Inc, Urban Mass Transportation Administration, and Peat, Marwick, Mitchell and Co. Sep 84. Available from: Office of Technical Assistance, UMTA, 400 7th ST SW; Washington DC 20590 USA. Abstract: This guide is designed as a technical report for potential High Speed Waterborne (HSW) service operators, craft builders, and investors. It is intended to assist in the key tasks required to assess the feasibility of and implement HSW service. These tasks include market analysis; selecting HSW craft; fulfilling regulatory requirements; obtaining financing; and developing and implementing service. The disappointing record to date of implementing HSW service in the US demonstrated the need for this guide. This guide draws on the lessons learned from these past attempts to start HSW service in the US as well as on the experiences of many successful foreign HSW operators. It should be recognized that any compilation of data and methods for evaluation will have some limitations. Recognizing these limitations before initiating a feasibility evaluation will improve the overall accuracy of the results. Limitations can be placed in the following categories: vehicle characteristics that are continually being modified and improved; newly available and proven HSW vehicles will replace some of the HSW vehicles listed; regulatory decisions that may change from location to location and from time to time; and ridership that may be influenced by local, political, and economic considerations.
  57. Guidoni, A., Seaplanes – “15 years of Naval Aviation”, Journal R.A.S., vol. XXXII, no. 205, Jan 1928, pp. 25-64
  58. Hamilton, F. M., C.W. Pritchett, and H.H. Hudgins, “Technical and operational characteristics of high performance watercraft;” Washington, D.C. : U.S. Coast Guard, Office of Research and Development ; Springfield, Va. : Available through the National Technical Information Service, 1975.
  59. Haney, Dan G. and Stanton R. Smith, “Economic Feasibility of Passenger Hydrofoil Craft in U.S. Domestic Foreign Commerce;” prepared for Maritime Administration, U.S. Dept. of Commerce. Stanford Research Institute. Menlo Park, Calif. : [distributed by Office of Technical Services, U.S. Dept. of Commerce], 1961
  60. Hayward, L., “The History of Hydrofoils.” A Series of Articles Published in Hovering Craft & Hydrofoils, Kalerghi Publications, London, England, Vol. 5, 1966.
  61. Hefazi, Hamid; Orhan Kural; Hsun Chen; and Tuncer Cebeci, Professors; Eric Besnard, Adeline Schmitz, Kalle Kaups, and George Tzong, Research Associates, “Hydrofoil Design and Optimization for Fast Ships, Proceedings of the 1998 ASME International Congress and Exhibition Anaheim, CA, Nov, 1998. Abstract: The paper presents a multi-disciplinary design/optimization method for the conceptual design of a hydrofoil based fast ship. The method is used to determine the maximum achievable lift-to-drag ratio (L/D) of an isolated foil-strut arrangement (hopefully greater than 50) at high transit speeds (greater than 75 knots) while lifting masses of 5,000 and 10,000 tons. First, the tools necessary for the study are presented. They comprise a panel method to compute three-dimensional flows around arbitrary configurations with a model for the free surface, a foil cross-section optimization tool, a strut cross-section design tool, and a structural analysis tool. The computational tools are then integrated into a multi-disciplinary design/optimization approach, which is applied to the design of single foil and biplane configurations. Results show that the goal of L/D = 50 is achievable for 75 knots (assuming that techniques can be developed for reducing the skin friction drag to a quarter of its nominal value) and, that for 90 knots, L/D ratios around 45 can be reached. The corresponding break horsepower requirements for 10,000 tons are around 130 khp and less than 200 khp, respectively. Full text posted at: www.csulb.edu/colleges/coe/ae/ae_dept/images/pdf/asme_paper.pdf
  62. Hockberger, William A., “Defining a Ferry Business.” Paper presented at the SNAME1997 Transportation Operations, Management, and Economics Symposium at the Meadowlands Hilton Hotel, May 14-15, 1997.
  63. Hoerner, Sighard F., Dr. – Ing, Fluid-Dynamic Drag, Practical Information on Aerodynamic Drag and Hydrodynamic Resistance, published by the author, 1965 (also by the same author with Henry V. Borst: Fluid Dynamic Lift. Both books are a “must” for hydrofoil designers)
  64. Horn, Captain Frank, USN, “PHM Squadron Two Operational Experience”, AIAA/SNAME/ASNE 7th Marine Systems Conference, New Orleans, Louisiana, February 1983.
  65. Hydrofoil Handbook, Gibbs and Cox, Inc. New York, 1954. Prepared by Gibbs and Cox, Inc. acting as the design agent of the Bath Iron Works Corporation under Office of Naval Research contract NONR-507 (00)
  66. Ikonnikov, V.V. and A.I.Maskalik. Osobennosty proektirovaniya i konstruktsii sudov na podvodnykh krylyakh. L., Sudostroyenie, 1987 (“Peculiarities of designing and constructing hydrofoils”, in Russian)
  67. Imlay, Frederick H, “Theoretical Motions of Hydrofoil Systems”, NACA Report 918, 1948. Results are presented of an investigation undertaken to develop theoretical methods of treating the motions of hydrofoil systems and to determine some of the important parameters. Variations of parameters include three distributions of area between the hydrofoils, two rates of change of downwash angle with angle of attack, three depths of immersion, two dihedral angels, two rates of change of lift with immersion, three longitudinal hydrofoil spacings, two radii of gyration in pitching, and various horizontal and vertical locations of the center of gravity. Graphs are presented. This 1948 report has been posted in full on the web by NASA. “The use of hydrofoils as an alternative to planing bottoms or hulls has been of interest for some time. Guidoni advocated the use of hydrofoils as a means of improving the take-off and rough=water performance of seaplanes as early as 1911.”
  68. International Hydrofoil Society, “Proceedings of the 25th Anniversary Celebration and Conference”, Collection of Hydrofoil Papers, Washington, D.C., June 1995. (Copies still available. The cost per copy for mail delivery in the USA or Canada is US$18.50. For delivery to other countries, the cost per copy is US$25.00. Send questions about the Proceedings to IHS Treasurer. For instructions on how to order, Click Here.
  69. Irvine, James F. and Donald T. Blake, “Operational evaluation of the hydrofoil concept for U. S. Coast Guard missions, Phase I : Report of operations with the USCGC Flagstaff (WPBH-1)” Washington : U. S. Coast Guard, Office of Research and Development, 1975.
  70. Irvine, James F. and Donald T. Blake, ” Operational evaluation of the hydrofoil concept for U. S. Coast Guard missions, Phase II : Record of additional operations with USCGC Flagstaff (WMBH-1);” Washington : U. S. Coast Guard, Office of Research and Development, 1975.
  71. Irvine, James F. and Donald T. Blake, “Operational evaluation of the hydrofoil concept for U. S. Coast Guard missions, Phase III : Report of operations with USCGC High Point (WMEH-1);” Washington : U. S. Coast Guard, Office of Research and Development, 1975.
  72. Jackson, L. J., “Recent PHM Operational Experience”, ASNE Proceedings of High Performance Marine Vehicles Conference, Arlington VA, June 1992.
  73. Jaques, Bob, “Eggshells on Razor Blades Revisited: High-Speed Craft – Dismissed As Eggshells On Razorblades in Their Hydrofoil Infancy — May Have Revolutionized Ferry Operations of Late, But Old-Fashioned Safety Worries Are Resurfacing, Seatrade Review 1996
  74. Jeffrey, N. E., and W. E. Ellis. “Proteus-A Versatile Vehicle for Open-Water Hydrodynamics Research.” Journal of Hydronautics, Vol 4. No. 2, April 1970: 60-65.
  75. Jeffrey, N. E. and M. C. Eames, “Canadian Advances in Surface-Piercing Hydrofoils.” SNAME Journal of Hydronautics, Vol. 7. No. 2, April 1973.
  76. Jewell, D. A. “Hydrofoil Performance in Rough Water”, Paper presented at AIAA/SNAME Advanced Marine Vehicles Conference, San Diego, CA, February 25-27, 1974.
  77. Johnston, Robert J., and John R. Meyer, “100 Years of Overcoming Archimedes Principle”, SNAME Southeast Section Centennial 1893-1993, February 9-10, 1993.
  78. Johnston, Robert J. and O’Neill, Wm. C., “A Ship Whose Time Has Come-and Gone”, Paper presented at AIAA/SNAME Advanced Marine Vehicles Conference, Baltimore, MD, 2-4 October 1979.
  79. Johnston, R.J. and W.C. O’Neill, “The Development of Automatic Control Systems for Hydrofoil Craft”, International Hovercraft, Hydrofoil and Advanced Transit Systems Conference, Brighton, England, May 1974.
  80. Johnston, R.J., “Historical Perspective”, Hydrofoil Lecture Day, Massachusetts Institute of Technology Professional Summer, July 8, 1975.
  81. Johnston, Robert J., “History of US Involvement in Developing the Hydrofoil.” Paper Presented at 1st International Hydrofoil Society Conference, Ingonish Beach, Nova Scotia, Canada, 27-30 July 1982.
  82. Jones, E. A., “RX Craft, a Manned Model of the RCN Hydrofoil Ship BRAS D’OR.” SNAME Journal of Hydronautics, Vol. 1, No. 1, July 1967.
  83. Kaji, M., Y. Nishi, and Y. Yamagami, “Prediction Method of Motions of Hydrofoil Vessels,” Journal of the Kansai Society of Naval Architects, Issue 214, Sep 90, 6 pages. ISSN: 0389-9101. Abstract: To respond to the need for high speed transportation, the hydrofoil vessel, supported partially or totally by foil lift, has been widely investigated. Because these investigations have included few studies of hydrofoil vessel motions, however, the authors studied these motions both theoretically and experimentally. They show that the unsteady characteristics of the hydrofoil have to be included in the hydrodynamic coefficients of the motion equations used for prediction. It is also confirmed, based on experiments, that lifting link theory is useful for calculation the unsteady characteristics of the three-dimensional hydrofoil under a free surface.
  84. Kaplan, P., “Use of Jet Flapped Hydrofoils as Ships Anti-Pitching Fins”, Oceanics Report 6413.
  85. King, James H. and M. Devine, “HANDE-A Computer-Aided Design Approach for Hydrofoil Ships”, Naval Engineer’s Journal, Vol. 93, Issue: 1, April 1981. Presented at ASNE Day, 30 April-1 May 1981. Session Title: Ship Design III, Paper No. 3. Abstract: A powerful computer-aided design tool for use in hydrofoil ship engineering, the Hydrofoil Analysis and Design (HANDE) Program, is described. Its relevance, structure, features, and use are delineated. The value of HANDE for design verification and variation, research studies, and rapid response studies is related through case histories. Future application and development of HANDE and related design tools are forecast. Available from: American Society of Naval Engineers; 1012 14th Street, NW; Washington DC 20005 USA.
  86. King, James H., “The Evolution of the NIBBIO Class Hydrofoil From TUCUMCARI“, Paper Presented at 1st International Hydrofoil Society Conference, Ingonish Beach, Nova Scotia, Canada, 27-30 July 1982.
  87. King, John W., “The PHM-The NATO and US Requirements”, AIAA Paper No. 83-0614, AIAA/SNAME/ASNE 7th Marine Systems Conference, New Orleans, February 23-25,1983.
  88. Lacey, R. E., “A Progress Report on Hydrofoil Ships.” Quarterly Transactions, Royal Institution of Naval Architects, Vol. 107, No. 1, January 1965.
  89. Lang, Thomas G. “Preliminary Design of Hydrofoil Cross Sections as a Function of Cavitation Number, Lift, and Strength.” Journal of Hydronautics 4.3 (1970): 104-112.
  90. Lunde, J. K. and H. A. Walderhaug, “300 tons, 50 knots hydrofoil Craft;” second report (Johannes Krzywinski), 1916- [S.l.] : Office of Naval Research, [19??]
  91. Lynch, Thomas G., “The Flying 400”, Canada’s Hydrofoil Project, Nimbus Publishing Limited, Halifax, Nova Scotia, 1983, ISBN 0-920852-22-X.
  92. Mahig, J. “Effect of Sweep Angle and Drag on the Flutter.” Journal of Hydronautics 7.3 (1973): 104-108.
  93. Mandel, P., Seagoing Box Scores and Seakeeping Criteria for Monohull, SWATH, Planing, Hydrofoil, Surface Effect Ships, and Air Cushion Vehicles. March 1979. 98 pages, Report No: DTNSRDC/SDD-79/1 Final Rpt., ISBN: SF 43-411-291; ISSN: 62543N. Publisher/Corporate Author(s): David Taylor Naval Ship R&D Center, Bethesda MD 20084 USA. Abstract: Three seagoing box scores applicable to any vehicle operating on the surface of the ocean are defined and assessed. One of the box scores is directly useful for calculating the operational worth and the technical seagoing merit of vehicles performing ocean surveillance-like functions. The second box score is similarly useful for the ordinary transportation function of vehicles. The third box score is useful for measuring the technical seagoing merit of vehicles performing any function. This work brings together prescribed values of 18 seakeeping criteria for monohulls, small-waterplane-area twin-hull (SWATH) ships, planing craft, surface effect ships, and air cushion vehicles from sources indicated in the report. The nature of each criterion is discussed and the prescribed values of these 18 criteria for each vehicle type are compared and discussed. Although some of the prescribed values of these 18 criteria are not reconcilable, other values, obtained from independent sources, show remarkable agreement. At least one new criterion not included in Table 2 is needed for monohulls. Appendixes A, B, and C contain a useful summary of important results of Olson’s massive work in a form not presented in his work. The usefulness and limitations of the frequency and time domain ship motion data bases developed for monohulls are described in Appendix D. The existence of these two data bases makes it possible to calculate the values of several of the criteria of Table 2 by two completely independent means.
  94. Martin, M., “The Stability Derivatives of A Hydrofoil Boat – Part II”, Technical Report 001-10(II), Hydronautics Inc., January 1963
  95. Matveev Konstantin He has recently co-authored, with V. Dubrovsky and S. Sutulo, the book Small Waterplane Area Ships. In particular, he wrote a section on hydrofoils that provides simplified engineering methods for calculating lift and drag of low and high aspect ratio foils (including free surface effects), cavitation onset, vortex wash and wake behind a foil, and unsteady effects. Appendix G is on dynamic unloading and foil design, More information about this book and ordering information can be found at the Backbone Publishing web-site http://www.backbonepublishing.com/DreamHC/Page1.html. (070418 wnw)
  96. Matveev Konstantin I., and Ivan Ivanovich Matveev, “Hydrodynamic Sound Generation on a Hydrofoil,” 1996, 12th Conference On High-Speed Ship Design, Nizhiy Novgorod, Russia. Abstract: Mechanism of sound generation on a hydrofoil is considered. Mathematical model of the hydrofoil ‘singing’ effect is proposed. The frequencies of ‘singing’ are obtained. The theoretical results are compared with experiments. Contact the author to discuss: Konstantin I Matveev, email: matveev@hydrofoils.org, website: www.hydrofoils.org
  97. Matveev Konstantin I. and Ivan Ivanovich Matveev, “Estimation and Compensation of Hydrofoil Deformations During a Season of Operation,” International Hydrofoil Society Newsletter, Summer 2000; Abstract: “One of the restrictions on the use of commercial hydrofoil crafts, which have some advantages in comparison with common displacement ships, is the necessity for specialized maintenance of the foil systems. Such work usually requires complicated equipment and experienced specialists. This paper offers a new method effectively restoring a hydrofoil after foil damage. A simplified method for conservation of the lift coefficient, which greatly influences on ship’s performance, is obtained from consideration of the factors defining the lift. The technology of the process is briefly described. This method enables operators to reduce repair expenses and time drastically, which is very important during a season of operation.” Click Here to view the full text of the article. Contact the author to discuss: Konstantin I Matveev, email: matveev@hydrofoils.org, website: www.hydrofoils.org
  98. Matveev, Konstantin I. and Ivan Ivanovich Matveev, “Tandem Hydrofoil System,” Ocean Engineering 28 (2000) 253-261. Abstract: “A tandem hydrofoil system enables an improvement in the lift-drag ratio of a high -speed ship. The conditions for favorable application of this type of foil structure are determined. The data on hydrofoil boats using a tandem system are presented. The problem of the stability of the vertical plane motion for a hydrofoil with bow and stern foils is considered. The general conditions providing the stability are obtained.” Contact the author to discuss: Konstantin I Matveev, email: matveev@hydrofoils.org, website: www.hydrofoils.org. Copy can be found in libraries subscribing to Ocean Engineering, or it can be ordered directly from the publisher at http://www.elsevier.com/.
  99. Matveev Konstantin I., “Investigation of Hydrofoil ‘Singing’ in the Carman Approximation,” Phystech Journal, Vol.2, No.2, 1996. Abstract: “The effect of hydrofoil ‘singing’ has been investigated. The mechanism of sound generation is considered and a mathematical model of the process is proposed. The frequency of sound generated by a hydrofoil and the sounf intensity distribution are estimated. Experimental data are compared to calculations. Countermeasures against the hydrofoil ‘singing’ are proposed.” Contact the author to discuss: Konstantin I Matveev, email: matveev@hydrofoils.org, website: www.hydrofoils.org
  100. Merritt, R.G. and R.L. Herechkowitz, “Variations on a Single Theme: Future Configurations and Growth of the Patrol Hydrofoil Combatant (PHM)”, AIAA Paper 76-854, AIAA/SNAME Advanced Marine Vehicles Conference, Arlington, Virginia (September 20-22, 1976)
  101. Meyer, John R., and James R. Wilkins, “Hydrofoil Development and Applications” ASNE Proceedings of High Performance Marine Vehicles Conference, Arlington VA, June 1992.
  102. Meyer, John, Ships That Fly. About 10 years ago John collected a lot of material about hydrofoils and put it all together in a book called Ships That Fly. It became a story of the modern hydrofoil covering the early days of hydrofoil inventors and experimenters and taking the reader through over 150 pictures and illustrations of hydrofoils leading to those of recent years. He recently had the pages of the book scanned and put in a pdf file and placed on a CD that is being offered for sale.You will note that Chapter 6, The US Navy Fleet Hydrofoil-PHM, ends with a very optimistic view of PHMs in the current US Navy, and larger hydrofoils in its future. However, this was not to be. Several years following the completion of my book, Ships That Fly, there were events surrounding the US Navy PHM program that are described in an Addendum to Chapter 6. All six PHM ships were decommissioned on July 30, 1993. This was the only time the US Navy has decommissioned an entire class of ships on the same day. This addendum describes some of the events leading to this sad day for the US Navy and the hydrofoil community. Also, documented are the many attempts to save the Ship, the day of the ceremony, attempts to save the ships even after the decommissioning, and finally the subsequent disposal of the ships and their status today.John also collected a series of over 140 hydrofoil pictures and illustrations, and created a Hydrofoil Slide Show, entitled: A Century of Hydrofoil Development. All three of these files are on the CD. To find out more, log onto: http://themeyers.org/ShipsThatFly/index.html
  103. Miller, Boyce E., and Harvey P. Hack. “Impressed-Current Cathodic Protection.” Journal of Hydronautics July 1973: 108-111.
  104. Mitchell, T. R. … [et al.] “Hydrofoils for the fisheries law enforcement mission of the U. S. Coast Guard;” Washington : U. S. Coast Guard ; Springfield, Va. : Available through the National Technical Information Service, 1975.
  105. Mitchell, T.R., J.P. Donnelly, and J.A. Nevendorffer, “Observations of the performance of TUCUMCARI (PGH-2) in the U.S. Coast Guard mission oriented trials;” Arlington, Va., Center for Naval Analyses, 1973.
  106. Mitchell, T. R., L. S. Cohan, and C. H. Heider, “The utility of high-performance watercraft for selected missions of the United States Coast Guard;” Center for Naval Analyses, Arlington, Va. Arlington, Va. 1972.
  107. Modern Ships and Craft, Chapter V – Hydrofoils, Special Edition of the Naval Engineers Journal, February 1985. (Contact IHS for a copy).
  108. Moorwood, John, “Hydrofoil Options.” Amateur Yacht Research Society (AYRS), #90 July 1998 – Covers different design ideas and approaches for sailing hydrofoils.
  109. Myers, G.R., “Observations and Comments on Hydrofoils”, Paper Presented at the Society of Naval Architects and Marine Engineers Spring Meeting, Seattle, WA., May 13-14, 1965.
  110. Noreen, A.E., P.R. Gill, and W.M. Feifel, Boeing Marine Systems, Inc., “Foilborne Hydrodynamic Performance of Jetfoil,” Journal of Hydronautics, Vol. 14, No. 2, Apr 1980, pp. 56-62. The Boeing Jetfoil Model 929-115 hydrofoil ship was derived from Model 929-100, with increased forward foil area for larger load-carrying capacity. Forward and aft foil contours were revised to increase cavitation margin. New hydrodynamic design methods were employed to maximize foil thickness for minimum structural weight. Prediction of foilborne cruise performance was based upon theoretical analysis, model test data, and full-scale trial data from Model 929-100. Extensive flowfield observations were made of the foil systems during sea trials of the first Model 929-115 produced. Good agreement was found between predicted and observed cavitation and ship performance characteristics. Sensitivity of ship performance to operating variables was determined from sea trial data.
  111. Norwegian Institute of Transport Economics (1967). “Hydrofoil Boats or Hovercraft?.” Hovering Craft and Hydrofoil, 6(11) pp: 24-27
  112. Oakley, O. H., “Hydrofoils-A State of the Art Summary.” Proceedings of the Institute of Aeronautical Sciences, National Meeting on Hydrofoils and Air Cushion Vehicles, 17-18 September 1962.
  113. Olling, D.S., and R.G. Merritt, “Patrol Combatant Missile Hydrofoil-Design Development and Production – A Brief History”, High Speed Surface Craft, January-February 1981.
  114. “Operational testing and evaluation of the hydrofoil seacraft DENISON from June 1962 through 1963.” Grumman Aircraft Engineering Corporation. [Bethpage, N.Y., 1963?]
  115. Ostersehlte, Christian, “Tragflächenboote von der Unterweser — Die BREMER PIONIER und ihre beiden Vorgänger,” Bremisches Jahrbuch, Band 79, 2000, pp. 145 – 196. The predecessor boats of the title are the Focke-Schaper-Tragflächenboot (Aug 1951) and TOM-TOM II (Oct 1951).
  116. Patch, David A., “Operational Utilization of the Patrol Hydrofoil Missile (PHM)”, First International Hydrofoil Society Conference, Ingonish Beach, Nova Scotia, Canada, July 27-30, 1982.
  117. Peek, R. and L. Bauer, “M-151 Transmission for Mark II Hydrofoils,” AIAA-2084, September 1981.
  118. Petrie, D. M., “Operational and Developmental Experience on the US Navy Hydrofoil HIGH POINT.” AIAA Journal of Aircraft, Vol. 3, No. 1, January-February 1966.
  119. Pieroth, C., “Grumman Design M163, a 2400 Metric Ton Air Capable Hydrofoil Ship”, AIAA Paper 78-749, AIAA /SNAME Advanced Marine Vehicles Conference, San Diego, CA, April 17-19, 1978.
  120. Plotkin, A. “Laminar Boundary-Layer Induced Wave Forces on a Submerged Flat-Plate Hydrofoil.” Journal of Hydronautics 8.2 (1974): 47-52.
  121. Prandtl, Ludwig and Oscar G Tietjens; Applied Hydro- and Aeromechanics, ISBN: 048660375X. A text book of over 300 pages (5-3/8” x 8-1/2”). Prandtl was a leading aerodynamics theorist. This work has is reported as “one of the finest introductory works in the field”. Topics include flow through pipes, Prandtl’s own pioneering work on boundary layers, drag, airfoil theory, and entry conditions for flow in a pipe. Professor Tietjens is known for his research and development of experimental hydrofoil boats prior to and during the second world war. While it is uncertain whether the book deals specifically with hydrofoil hydrodynamics, it is listed by IHS due to the association of at least one of its authors with hydrofoil craft development. The book could be ordered through DoverPublications.com for $10.95 when this reference was spotted.
  122. Report to Congress: Study of High Speed Waterborne Transportation Services Worldwide, August 1984, Publisher/Corporate Author(s): Peat, Marwick, Mitchell and Company ; 1990 K Street, NW; Washington DC 20006, Office of the Secretary of Transportation ; 400 7th Street, SW; Washington DC 20590, Advanced Marine Systems Associates, Inc.; 9421 Chatteroy Place; Gaithersburg MD 20879 USA . Abstract: In response to Congressional mandate, UMTA engaged in an extensive evaluation of high speed waterborne (HSW) passenger transportation in the U.S. and throughout the free world. The study reviewed the history of HSW, determined its current status and examined factors that might impact its future development. Unsubsidized HSW operated by the private sector was emphasized in analyzing potential U.S. sites. The U.S. site analyses included domestic, as well as foreign craft. High interest rates and the investment required to establish HSW service make the financial feasibility of operations sensitive to the cost of capital. A vessel capable of satisfactory service must also have low initial costs and be economical to operate and maintain. As a group, craft of foreign origin meet these criteria best. Were foreign technology employed, the study indicated that HSW service could be operated profitably by the private sector in some markets. A study of 10 such sites, indicated that nine might, under certain conditions, be feasible. Conditions are: (1) Competitive in time with other transport services, (2) Competitive in cost; (3) Need to capture only a small share of an existing travel market for economic viability. Primary market for HSW abroad is travel times under 45 minutes. Despite relatively high seat-mile costs, travelers abroad often pay a premium fare for travel time savings, convenience and/or novelty of HSW. HSW craft operate safely in great variety of adverse locations. Foreign HSW development has been orderly with private sector and unsubsidized service often viable. In contrast, in the U.S. HSW has been beset by inadequate capitalization and has operated with unproven vessels. Available from: Office of the Secretary of Transportation ; 400 7th Street, SW; Washington DC 20590 USA; ID: 00390706
  123. “Review of Selected High Speed Waterborne Operations Worldwide,” Authors: Advanced Marine Systems Associates, Inc, Urban Mass Transportation Administration, and Peat, Marwick, Mitchell and Co.; Report No. UMTA-IT-32-0001-4, Aug 84. Available from: Office of Technical Assistance, UMTA, 400 7th ST SW; Washington DC 20590 USA. Abstract: One of seven reports written under this contract to describe high speed waterborne passenger transportation, review its applicability in the US, and document its development in the free world. This report describes high speed waterborne passenger transportation operations throughout the world. Information is presented on: ridership, the type, characteristics and number of craft used, operating conditions and characteristics, crew sites and wages, terminal facilities and maintenance procedures. The operators described were chosen because they exemplify the most frequently used types of craft and operating scenarios. Services are included that operate in Europe, South America, and the Far East. Not all existing operations are covered in this report due to time and budget limitations.
  124. Rieg, Donald F. and James H. King] “Technical evaluation of the RHS 200 for high speed ferry applications and Coast Guard missions ;” prepared for U.S. Department of Transportation, United States Coast Guard, Office of Research and Development. Rieg, Donald F. Washington, D.C. : The Office ; Springfield, Va. : Available through NTIS, 1984.
  125. Rodriquez, Leopoldo, Dino Di Blasi, “Current Status and Future Prospects for European Commercial Hydrofoils”, Paper Presented at 1st International Hydrofoil Society Conference, Ingonish Beach, Nova Scotia, Canada, 27-30 July 1982.
  126. Roess, R.P. and P.J. Grealy, “The Use of High-Speed Vessels in Urban Ferry Service: Issues and Economic Evaluation,” Transportation Research Record, Issue: 925, Inland Water Transportation. 1983. pp 9-12, Publisher/Corporate Author(s): Transportation Research Board; 2101 Constitution Avenue, NW; Washington DC 20418 USA; Abstract: The economic aspects of high-speed ferry operations are discussed and compared to conventional ferry services. The economic viability of high-speed service is demonstrated using conventional economic analysis techniques. Issues related to high-speed ferry operations such as safety, efficiency, and ridership attraction are discussed in more general terms. The paper concludes that high-speed ferry operations can compare favorably with conventional services and hold potential for attracting larger numbers of passengers and charging premimum fares. :Available from: Transportation Research Board Business Office; 2101 Constitution Avenue, NW; Washington DC 20418 USA. Order Number: DOTL JC
  127. Salvesen, Nils. “Seakeeping Characteristics of Small-Waterplane-Area-Twin-Hull Ships.” Journal of Hydronautics 7.1 (1973): 3-9.
  128. Schrider, M., “Study of Foil Influence on Foil-Borne Hydrofoil Performance”, Intersociety Advanced Marine Vehicles Conference, Arlington, VA, 5-7 June 1989.
  129. Shen, Y., Wermites, R., “Recent Studies of Struts and Foils for High Speed Hydrofoils” Marine Technology, Vol 16, January 1979.
  130. Shultz, W.M., “Boeing JETFOIL Model 929-100”, AIAA Paper No. 74-308, AIAA/SNAME Advanced Marine Vehicles Conference, San Diego, CA, February 25-27, 1974.
  131. Shultz, W.M., “Current Status And Future Prospects United States Commercial Hydrofoils”, Paper Presented at 1st International Hydrofoil Society Conference, Ingonish Beach, Nova Scotia, Canada, 27-30 July 1982.
  132. Sinnarwalla, Abbas M. and T. R. Sundaram, “On the changes in lift of hydrofoils due to surface injections of polymer additives;” Laurel, Md. : Hydronautics, Inc., 1978.
  133. Stark, D.R., “Ride Quality Characterization and Evaluation in the Low Frequency Regime, with Applications to Marine Vehicles,” Human Factors in Transport Research Volumes 1 and 2, Academy Press Inc. (London) LTD, and Conference on Ergonomics and Transport, Swansea, United Kingdom, 1980.
  134. Stark, D.R., “The PHM Automatic Control System”, SAE National Aerospace Engineering and Manufacturing Meeting, San Diego, CA, Oct. 1974.
  135. Stevens, D. L., Jr., “The Bureau of Ships Hydrofoil Craft FRESH-1.” Paper Presented to Chesapeake Section, SNAME, 26 February 1964.
  136. “Study of High Speed Waterborne Transportation Services Worldwide”, Urban Mass Transportation Agency, UMTA-IT-32-0001-84-3, August 1984, Seven Vols., National Technical Information Service (NTIS) #PB 85129906/U.
  137. “Study of Hydrofoil Seacraft” Vols. I and II, PB161759, 3 Oct 58, Phase I Technical Report by Grumman Aircraft Engineering Corporation to Maritime Administration, US Department of Commerce. “This report contains the results of a parametric study made to determine the feasibility of hydrofoil seacraft with speeds from 50 to 200 knots, gross weights from 100 to 3,000 tons, and ranges from 400 to 3,600 nautical miles. The relative merits of various combinations of hydrofoil craft parameters and the possible advantages of such craft over displacement vessels were thoroughly investigated. A detailed analysis of the various design features and operational characteristics of hydrofoil craft… is also included.”
  138. Sueoka, H, Tozawa, S., Sakai, F., Kabata, T.,”Structural Responses of Mitsubishi Super Shuttle 400, Rainbow, in Seaways”, Mitsubishi Heavy Industries, Ltd. (Japan), FAST ’95 Conference.
  139. Sugranyes Baena, Alcides, “‘KOMETA-M’ – Description and Handling of USSR Coastal Passenger Hydrofoil,” Hovering Craft and Hydrofoil, Kalerghi Publications, Vol. 1 No. 11, Aug 72
  140. Sullivan, E. K. and Higgins, J. A., “Test and Trials of the HS DENISON.” Published by the Maritime Administration, circa 1962.
  141. Swales, P. D., R. C. McGregor, and A.J. Wright. “Correlation of Force Measurements and Separated Flow Regions on Surface Piercing Struts.” Journal of Hydronautics April 1974: 72-73.
  142. Swales, P. D. R. C. McGregor,and A. J. Wright. “Explanation of Forces on a Surface.” Journal of Hydronautics July 1973: 132-133.
  143. Taiwan 106-36 Republic of China, Vol. 24, No. 2, 2000, pp. 120-129. Abstract: For convenience in engineering applications, we attempt to find a general regression relation between the nondimensional cavity length and the cavitation number for two-dimensional supercavitating hydrofoils. Based on observations of the general trend of the relation, a nonlinear function for these two physical quantities is proposed, and the coefficients in the function are optimally determined via a least-squares procedure and an iterative Gauss-Newton method. Several supercavitating hydrofoils, including flat-plate hydrofoils and hydrofoils with and without cambers, are investigated. The results seem to indicate that there exists a global approximate relation, the optimum coefficients of which depend on the flow conditions and hydrofoil shape. Key Words: 2-D supercavitating hydrofoil, potential flow, regression relation. Full text posted at: http://nr.stic.gov.tw/ejournal/ProceedingA/v24n2/120-129.pdf
  144. Terao, Yutaka; “Lateral and Roll-Yaw Coupled Motion Control of Hydrofoil Craft”, Proceedings of the 7th International Conference on Stability of Ships and Ocean Vehicles (STAB 2000), 7-11 February 2000, Launceston, Tasmania, Australia. AMECRC Ltd, Editor: Martin Renilson. pp 542 – 550. For those with a really technical bent, the mathematical modeling of the human operator using skilful body weight shift to maintain stability of a solar powered hydrofoil has been examined in this reference.
  145. Terao, Yukata; (Tokai University, Dept. of Naval Architecture, Japan) and H. Isshiki (Hitachi Zosen Corp, Japan), “Wave Devouring Propulsion (WDP) Sea Trial,” Undated. Abstract: The development of Wave Devouring Propulsion system and results of its sea trial on the HOKUTO are presented. WDP system is an idea not only for the ship propulsion system which converts wave energy directly into thrust but also the ship motion reduction system. This system consists of a ship hull and a hydrofoil installed at the bow. Improvement of the propulsive efficiency in waves and high seaworthiness is measured during the sea trial. Click Here for full text on line.
  146. Tietjens, O., “Das Tragflaechenboot.” Werft Reederei Hafen, Jahrg. 18, Heft 7, April 1, 1937, pp 87-90 and Heft 8 April 10, 1937 pp. 106-109.
  147. Unruh, J. F., and R. L. Bass III. “Doublet Lattice-Source Method for Calculating Unsteady Loads on Cavitating Hydrofoils.” Journal of Hydronautics 8.4 (1974): 140-147.
  148. Van Bibber, V. H., “The Major Problems of Hydrofoil Craft,” Lockheed Shipbuilding and Construction Company paper presented at the SNAME Hydrofoil Symposium 13-14 May 1965 Spring Meeting in Seattle Washington. Major problem areas discussed in this paper are, Propeller Designs, Manufacture of Hydrofoils and Mating of Subassemblies, Galvanic Protection, and Crew Habitability.
  149. van Walree, Frans, “Computational Methods for Hydrofoil Craft in Steady and Unsteady Flow,” doctoral thesis, available to the public at a cost of NLG 100 (approx. US$50), by sending a request to Maritime Research Institute Netherlands, Attn: Ms. R. Jurriens, Librarian; PO Box 28; 6700 AA Wageningen, Netherlands. Tel: +31-317-493417, Fax: +31-317-493245, email: Rjurriens@marin.nl.
  150. Vermeulen, Johan C., Roderick A. Barr, Milton Martin, “Hydrodynamics of Hydrofoil Craft Subcavitating Hydrofoil Systems,” Hydronautics, Inc. Technical Report 463-1, April 1964
  151. Vogt, James E., “Automatic Control of the Hydrofoil Gunboat, TUCUMCARI,” AIAA 2nd Advanced Marine Vehicle and Propulsion Meeting, AIAA Paper No. 69-729, 1969.
  152. von Schertel, Baron Hanns, “European Development of Hydrofoil Craft Technology”, Paper Presented at 1st International Hydrofoil Society Conference, Ingonish Beach, Nova Scotia, Canada, 27-30 July 1982.
  153. von Schertel, Baron Hanns, “Design and Application of Hydrofoils and Their Future Prospects,” Institute of Marine Engineers-Transactions, Series A, Part 3, Vol 86, 1973, pp 53-64. Institute of Marine Engineers; Memorial Building, 76 Mark Lane; London EC3 7JN England; Abstract: The performance characteristics of hydrofoil craft are compared with those of other water craft with regard to lift/drag ratio, power requirement, speed loss in waves and sustained accelerations, special attention being paid to the hovercraft. The advantages and state of development of the foil systems currently in use are examined, and their commercial and military applications described. The different propulsion systems and their efficiencies are discussed. Finally the future of the hydrofoil is visualized, the prospects of the known foil sections for surmounting the speed barrier being appraised. The presumable size limit of future craft is considered.
  154. Wang, J. & Mcowan, S., “Fast Passenger Ferries and Their Future,” Maritime Policy and Management, Vol. 27, Issue 3, Jul 00, pp 231-251. Published by Taylor and Francis, Ltd.; 1 Gunpowder Square; London EC4A 3DE, England. (USA address: 1900 Frost RD Suite 101; Briston PA 19007). Abstract: Examines the different choices of high speed craft (HSC) hull design available and briefly looks at the advantages and disadvantages of each hull form. The trends in various design aspects of HSC such as speed, capacity, and size are studied. An investigation on HSC development is conducted, and the future of HSC in the United Kingdom is studied. A study onboard an HSC with the aim of trying to determine what passengers think of HSCs and why the travel by them is also conducted. Finally, an analysis of the possible market for HSCs is carried out.
  155. Weber, D. (1967). “New Worlds to Conquer.” Hovering Craft and Hydrofoil, 6(12) pp: 3, 6
  156. Wennagel, G. J., “Characteristics of the US Maritime Administration Hydrofoil Test Vehicle.” Paper Presented at SAE National Aeronautics Meeting, 1961.
  157. Williams, R.E and P.L. Ehrman, “Operational evaluation of the hydrofoil concept for U. S. Coast Guard missions: executive summary;” Washington : U. S. Coast Guard, Office of Research and Development ; Springfield, Va. : Available through the National Technical Information Service, 1975.
  158. Wright, H.R. and F.W. Otto, “The Hydrofoil Craft Drag Polar,” Journal of Hydronautics, October 1980.
  159. Wright, H. Raymond, Jr. (Grumman Aerospace Corp) and Frank W. Otto (Edo Corp), “Hydrofoil Craft Drag Polar,” Journal of Hydronautics, Vol 14. No. 4., Oct 1980, pp. 111-116. Adaptation of the friction and wave drag components to the classic aerodynamic drag polar are shown with accommodation for the weight/center-of-gravity envelope. The parametric forms of the drag, power, and specific range and endurance curves are shown and related to the traditional dimensional forms. The relationship between the drag polar and the propulsion is indicated.
  160. Yagi, T., et al, “Jetfoil Operational Experience in Japan”, ASNE Proceedings of High Performance Marine Vehicles Conference, Arlington VA, June 1992.

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International “Glossies”
LIFE Magazine 9/27/54. Cover: “Canada’s Hydrofoil — Revolutionary Idea For Navies.” photo is of Canadian hydrofoil R-100 MASSAWIPPI before foils were modified. This 45-foot, 5 ton demonstration craft was instrumented to collect data for design of larger, operationally capable ships. When heavily loaded, the original foils (shown in the LIFE cover) produced violent “porpoising” at 40-50 knots. This problem was solved by a complete redesign of the foil system. According to IHS member Jean Buhler, the LIFE cover photo was taken just before MASSAWIPPI “struck a railroad tie (end on, thank goodness!). The late Mike Eames is at the helm, and the man in the seat beside him looks like USN CDR Jim Stillwell.” Article on pp 56-60, “Boats That Fly Atop the Water.” Photos and descriptions of LANTERN (built by Hydrofoil Corp, Annapolis MD), KC-B (named for F. W. “Casey” Baldwin), XCH-4 (John H. Carl & Sons), HD-4 (Alexander Graham Bell, age 72, at the controls with co-designer Casey Baldwin and Baldwin’s young son), German patrol boat VS-6, von Schertel tourist boat PT-30 (on Lake Maggiore), US Navy’s HIGH POCKETS, Gibbs & Cox 20-ft hydrofoil, and WING (a German sports boat that sold for US$6,370).
Massawippi, Life Magazine September 27, 1954
LIFE Magazine 7/26/63, “Exclusive Picture Log of a Mad Maiden Voyage”, pp NY2-NY8 (New York Extra Section). Nine large B&W photos by Dan McCoy. Excerpts from the text: “It was the maiden voyage of the ALBATROSS and the dawn of a sparkling new era in New York commuting… aboard were the city’s first hydrofoil commuters — 24 passengers bound out of Port Washington for Wall Street. But barely had these sea=going commuters settled back in their seats… when a crazy saga started to unfold. Before the ALBATROSS finally reached lower Manhattan they had taken part in a dramatic rescue, found themselves face-to-face with some stranded celebrities, and then, as the whole improbable voyage was about to end, almost lost their leader…” The rescued celebrities were movie producer Sam Goldwyn and his wife, and investment banker Robert Lehman, who were floundering off Steppingstone Light. “‘I’ve made movies with less excitement,’ observed Mr. Goldwyn.” A little later, the president of American Hydrofoil Lines Ira E. Dowd stepped out on deck to watch as a Coast Guard vessel approached and he toppled overboard. All ended well, however; he was pulled back aboard, his suit dripping wet, but otherwise OK.
Brooks, Alec N., Allan V. Abbott, and David Gordon Wilson, “Human-Powered Watercraft,” Scientific American, December 1986. Features cover artwork showing the Flying Fish II human-powered hydrofoil. This issue includes an eight page article (pp 108-114) about this craft and a range of other human-powered vessels with illustrations and graphs.
Cover of Scientific American December 1986
“The Speediest Boat,” National Geographic, Sep 1911, pp. 875-878. Article includes two B&W photos of Enrico Forlanini’s hydrofoil craft and describes how Alexander Graham Bell traveled 45 mph on Lake Maggiori in this craft. Forlanini patented his hydrofoil under the descriptive name of “appareccio idrovolante.” The article quotes Scientific American as saying, “After six years of experimenting, Forlanini can how consider that he has arrived at fully satisfactory and definite results.” The weight of the successful craft, including two passengers, is cited as two tons. It was powered by a 100 hp gas engine. Hull length was 32.8 ft.

Grosvenor, Gilbert, “Hydrofoil Ferry ‘Flies’ the Strait of Messina,” National Geographic April 1957, pp 493-496. 8 illustrations (six in color).

More Glossy Magazine Titles (No Photo Available)…

  1. “Just Above Water; First Hydrofoil Craft to Enter Regular Commuter Service in the U.S. is the Goodship ALBATROSS,”Time Magazine, July 26, 1963. No details available.
  2. Fortune, Dec 62, includes hydrofoil article, “The New Lift for Transport: Earth Skimmers.” No details available.
  3. Morgan, Murray, “Ungainly Waterbug: Hydrofoil Boats,” Saturday Evening Post July 13 – July 20, 1963, pp 68-69. New hydrofoil craft that fly on underwater wings may protect our coasts from attack by missile submarines. Includes a large, high definition photo of FRESH 1. Other hydrofoil vessels mentioned in the article include USS HIGH POINT, SEA LEGS, AG(EH)-1 PLAINVIEW, and LITTLE SQUIRT. From the text of the article: “The Navy decided to gamble on a new approach — a radically different form of hydrofoil which, it was hoped, might work on an ocean-going vessel. In effect, the Naval experts would try to leapfrog the “hydrofoil gap” and develop a more sophisticated craft without going through all of the sates with which other designers had experimented… when the Office of Naval Research became interested in hydrofoils as potential sub-hunters, it decided that the best chance for an ocean-going craft lay in  the development of this so-called “thinking wing”…the Boeing Company had already assigned a deceptively mild and boyish-looking aeronautical engineer named Robert E. Bateman to determine where Boeing might find a place in the Navy’s anti-submarine warfare program… on the first test run, last January, Boeing test pilot Vern Salisbury stood the LITTLE SQUIRT on its nose and wound up in the freezing waters of Lake Washington… The HIGH POINT,  115 feet long, 31 feet in the beam and displacing 110 tons, appears closer to sinking than flying. The HIGH POINT was built for the Navy at the Martinac Shipbuilding Corporation yards in Tacoma, and the veteran fish boat builders who riveted her aluminum hull couldn’t conceal their doubts. ‘I’m glad to have the work,’ one remarked to me, ‘but, hell, I can’t see spending two million bucks on this pipedream. I’m a taxpayer too.’ But as the HIGH POINT took shape, attitudes changes. Long before the successful test run, the Martinac men were converts.”
Newspapers – Local and National
Stein, Ralph, “Here Come the Hydrofoils!,” This Week Magazine, 21 July 1963, cvr, pp 6-7, 14-15. United Newspapers Magazine Corp. New York, NY. Two pages of text, five B&W photos, plus the cover illustration. Photos are of the Vingtor (Norway), Vikhr (Russia), Albatross (USA), Commutaboat I (Holland), and a typical vessel (Italy). “This summer a hydrofoil line is starting to carry commuters from the suburbs to New York. Another hydrofoil outfit is planning to make pleasure cruises at the 1964 World’s Fair. Next year, too, hydrofoils will run between Seattle and Victoria, BC. Hydrofoils will use as highways the waterways which lap the shores of most of the biggest American cities and their suburbs. They should be as cheap to ride as a bus or train and a lot more fun. Furthermore, the seem sure to change the pattern of urban and suburban living and real-estate development.” The article quotes Mr. Ira E. Dowd, President of American Hydrofoils Lines as saying, “Although the Albatross is just a model T of commuting hydrofoils, we’re starting a regular service between Port Washington, L.I. and East 25th Street in Manhattan this summer, at about $1.75 each way for the 25-mile trip. We’re building five more 24-passender boats. By 1965 we expect to have thirty-five 24-passenger boats running, and we’re planning to have a big 200-passenger hydrofoil in the water by then, too.” On the west coast, the article notes that William I. Niedermair, President of Northwest Hydrofoil expects the VICTORIA to be ready for sea trials in Jan 1964 and that he has applied for approval to operate hydrofoils as inter-island ferries starting in late 1964.” The article concludes, “Who’s going to advance the money to build fleets of hydrofoils? Under Title Eleven of the Merchant Marine Act of 1936, the Maritime Administration will guarantee a construction loan from a bank of up to 75 per cent of construction costs and then insure a subsequent mortgage, much like FHA.”
 

Newspaper Titles (No Photo Available)…

  1. Seattle Times’ Pictorial Magazine, three issues from the 1970s feature color photos of Boeing Jetfoils on the cover. The Nov 10, 1974 issue has four pages on the construction of JETFOIL ONE, with diagram and several b&w photos of different stages of completion. The Nov 13, 1977 issue has an article touting the Jetfoil as the Future of the Washington State Ferry System. It includes a history of Washington ferries, with b&w photos of the ELWAH, SPOKANE, QUINAULT (formerly of the San Francisco Bay Fleet), and the most infamous of the Washington ferries, KALAKALA. Also has photo of the Black Ball Lines / Puget Sound Navigation Co.’s Coleman Ferry Terminal. The April 1, 1979 issue includes two photos of the testing of the NORMANDY PRINCESS, a Jetfoil that runs between France & England.
  2. “Hydrofoil Speeds Across the Harbor,” Boston Traveler 11 Sep 63 (No details available)
Hobbyist Magazines
Fitz-Gerald, Wm. G., “To Cross Atlantic in Thirty Hours,” Technical World Magazine, Oct 1907, The Technical World Co., Chicago IL, pp 139 -142. Includes three tinted photos. “Peter Cooper Hewitt of New York is a scientist and inventor of high reputation and proved achievement. He is not given to idle and boastful talk. consequently, when he announces that by the invention of a boat supported above the water by gliding planes he has made possible the building of ocean liners which may easily reach a speed of one hundred miles an hours, even conservative men are ready to believe the statement. To cross the Atlantic in thirty hours is the goal at which Mr. Hewitt is aiming… with the added marvel that seasickness also will be relegated to the limbo of forgotten horrors, because no longer possible! …the only problem that remains at present is that of the propeller… yet the idea is not new… forty years ago the British Government was experimenting with a device that showed how a craft would lift if it had inclined planes made fast to its hull. So wonderful were the possibilities that private inventors speedily took a hand, among the Raoul Pictet, whose water ‘flying machine’ amazed the Swiss about the classic shores of Lac Leman.”
cover of Technical World Magazine October 1907
“Ocean Skimmer for Atlantic,” Modern Mechanics, March 1930. p.79. “At last the “stepladder boats,” as the hydrofoil speeders planned by the son [sic*] of Dr. Alexander Graham Bell have been called, are to make a bid for laurels as the fastest method of crossing the Atlantic. They are to be placed in regular service soon, according to plans of the inventor, and already the preliminary engineering, based on many model and full sized tests, has been done. Tomorrow we may be able to ride in one of these super luxurious liners. We will embark in New York in the evening, and the same time a day later find ourselves flying over the water up the English Channel, having clipped three full days from what was formerly the world’s record for trans-Atlantic passages.”

* The article erroneously refers to engineer and Bell associate Casey Baldwin as Bell’s son.

Cover of Modern Mechanics March 1930
“Ocean Liners With Water Wings,” Everyday Mechanics, Oct 1930, Vol. 2, No. 7, combined with Illustrated Science & Mechanics, published by Hugo Gernsback, Chicago IL, p.279. Two artist conception sketches and a paragraph of descriptive text occupying one half page. “Europe in two days is the aim of the designer of this novel hydrofoil ocean liner. Small wings, like those on an airplane, immersed in the water cause the huge boat to rise as it accelerates in speed until it virtually leaves the water – only the keel and wings being submerged… True, the boat has not been built as yet, but experiments with small boats have already been conducted which proved the soundness of the theory. Of course, this ship may not be as comfortable as the present liners, but it will save time.”
cover of Everyday Mechanics October 1930
“Ship on Stilts Rides Above Waves,” Popular Science, January 1936. “Ocean liners on stilts are proposed by a Portland OR inventor to offer travelers safety and comfort at sea. His design envisages a craft supported by buoyant submarine pontoons, in such a way that the hull itself rides clear of the water. its elevation above the surface would be sufficient to allow heavy waves to pass beneath it without striking it, eliminating the buffeting to which most ships are subjected in bad weather. Rolling and pitching would thus be minimized. The streamline pontoons are so arranged that they rest in a calm level below the surface layer of disturbed water, and their broad, flattened upper and lower surfaces resist any sudden vertical movement. The propeller is situated nearly amidships, and the tunnel-like enclosure formed by the surrounding pontoons is declared to give high propulsive efficiency. The added weight of the pontoon structure would not be as great as might be imagined, since the elimination of heavy shocks and strains upon all parts of the ship would permit the extensive use of lightweight alloys in its construction.”

 

Popular Science January 1936
“Boat Rides on Underwater Wing,” Popular Science, April 1939, Vol. 134, No. 4, p. 124. description and two drawings of the Wsevolode Grunberg hydrofoil concept. Excerpt from the article: “…a curious, airplane-type speedboat… is supported by a specially designed central keel, supplemented by two forward pontoon floats. Plans for the novel water craft call for a hull that resembles the porthole-studded fuselage of a giant transport plane, surmounted by a strut-supported engine whirling twin propellers, one facing toward the bow and the other toward the stern, to furnish both a pushing and a pulling force. The majority of the craft’s weight  is supported by a horizontal wing-shaped surface extending out at either side of the rudder, near the base of the keel. lateral stability of the craft is obtained by the bow pontoon floats, which are connected through shock absorbers to adjustable horizontal members in the form of ailerons jutting out from the prow of the ship. The weight of the vessel… is so distributed that the ship always has a tendency to nose-dive… the pontoon floats automatically keeping the craft on an even keel, since the farther they are pushed down into the water, the greater their lifting force… the inventor points out that it would be possible to use the floats as reservoirs for fuel…”

 

Cover of Popular Science April 1939
Armagnac, Alden P. , “100 Knot Liner Has Sea Wings,” Popular Science March 1959; Drawings by Bob McCall. “An ultra-fast new way to travel, in vessels that ride high above the waves, is promised by the conquest of the sea’s speed limit.” p106-113, 238, 240, 242. “Transocean A-Liner – Atomic propulsion is entirely contained in a pod attached to the center strut… supercavitating foils, while inefficient at moderate speeds, begin to show spectacular superiority above something like 70 knots… Accommodations will be much like those for an overnight trip by rail — individual staterooms, or roomettes. Such fancy trimmings as ballrooms and swimming pools will be superfluous; and your fare may pleasantly reflect the savings in operating cost…”

 

Popular Science March 1959
Gallager, Sheldon M., “Now You Can ‘Fly’ Your Own Outboard, Popular Science, June 1959, pp. 178-181, 210, 212. Photos by W.W. Morris. Description of two foils kits about to come on the market at that time: the Dynamics Development (subsidiary of Grumman) kit, which was to sell for about $395 and the “Roberts kit” designed by Jim Hartley, which was to sell for between $150 and $200. Most info is about the Grumman kit. The Roberts kit can be purchased already installed with an 8 ft. pram for about $460. The Roberts kit was held on by only 8 bolts; the Grumman installation was “a little trickier.” The article advises resisting the temptation to stunt-fly because “in crowded waters, the foils’ almost razor-sharp edges could mean sudden death to an unseen swimmer.” According to the article, “controllable tabs — like tiny ailerons — allow the Grumman foils to be trimmed under varying loads, but once set do not require further adjustment. The Roberts foils are trimmed by loosening bolts to adjust their angle of attack.”
Popular Science May 1960 – “Free Blueprint Sheet one & Sheet two: Flying Platform Boat. It’s a real quickie. Make it in two weekends… for $116. 00… with a table saw… for unsinkable fun. The first time I shoved the throttle forward on this little 4 ft. by 8 ft. fun boat, it took my breath away. In an instant, I found myself flying more than a foot above the water on homemade hydrofoils, going faster and faster… In calm water, with a 10-hp long-shaft motor, I flew the crazy little craft at 35 mph…. Next month (June 1960) you’ll get detailed instructions for mounting these same foils on any runabout up to 16 feet. An 18-hp long-shaft motor was used to fly a 14-footer. With two passengers in the front seat, the foils were carrying a gross weight of nearly 1,000 lbs. And best news of all for you: the foils can be made for less than $25, including their supports.”
Popular Science May 1960
Pfister, Herbert R., “How I Fitted Oak Hydrofoils To My 14-Foot Runabout,” Popular Science June 1960. “The most exciting water sport today is hydrofoiling. It’s boating, but different. Underwater wings lift your boat out of the water and you take to the air – or so it seems. Freed from the water, the boat rides smoother and faster on less power. If your boat is 16 feet or less in length, there’s a good chance you can equip it with foils. If you can work with wood, you can make foils. You shape them on a table saw. You’ll find the details illustrated in last month’s Popular Science. There’s also a big blueprint to help with the job. Photos and drawings show how I fitted foil supports to the sides of my 14-foot plywood hull. Broad braces on the supports distribute strain over a wide area, making the installation equally suitable for thin-skinned aluminum and fiberglass boats.”
Popular Science June 1960
Armagnac, Alden P., “Seagoing Hydrofoils Fly Over Waves at 60 Knots,” Popular Science July 1961, pp 56-59, 187-188. From the article, “This summer will see the completion of the HS DENISON for the Maritime Administration at an Oyster Bay NY shipyard. Its 80-ton size ties the record for foilborne vessels, and it will be the first ocean-going one. And the keel has been laid for the biggest hydrofoil ever built — the seagoing 110-ton subchaser PC(H)-1 due to joint the Navy next year.” The article also includes small B&W photos and text description of other hydrofoils, including the teardrop-shaped LANTERN, the FLYING DUKW, HALOBATES, XCH-4, and XCH-6.
Armagnac, Alden P., “60 Knot Hydrofoil, 90 tons of get-Up and Go,” Popular Science Monthly, Nov 62, pp 55-58, 180. “The fastest ship afloat will open a new era of high-speed ocean passenger service… With a thunderous roar and a faint trail of jet-fuel smoke, the extraordinary 104-foot vessel has been streaking by at an incredible 70 mph and more. As if to show it is really a ship and not some kind of waterborne missile, it has been seen executing graceful S-curves and U-turns at high speed, in a shower of spray. The flying phantom ruffles the water so slightly, despite its express-train velocity, as only gently to rock the smallest boats nearby… Long Island’s mystery vessel is the fastest ship in the world. Named the HS DENISON, she’s the first of a new generation of big US hydrofoils, both commercial and naval… A mighty gas turbine continuously delivers 14,000 hp, giving the craft its speed. Adapting such aircraft-type engines to propel hydrofoils is a major US advance.”

Joseph, James “Riding a Hydrofoil… Smo-o-oth,” Popular Science Monthly, Nov 62, pp 58-59. “Throttle open, ALBATROSS will carry 24 passengers, plus a crew of two. The first craft of this new US type has been successfully tested in trial runs. It’s expected to be put in service soon on a California route. Five craft are being produced initially by their designer and builder, Hydro-Capital Corp. of Newport Beach CA. Within a few more months, the firm hopes to have 15 of the boats flying.”

 

Denison and Albatross, Popular Science November 1962
Martenhoff, Jim, “I ‘Flew’ an Outboard Hydrofoil,” Popular Science Nov. 1965, pp 79 – 81. Text and 4 B&W photos. The author describes is test ride on a 15′ aluminum Starcraft with 40 hp outboard and surface-piercing hydrofoils. According to the article, the hydrofoils were an accessory kit developed by “an American-owned Swiss corporation Supramar” and designed to fit any powerboat from 14 ft. to 20 ft. in length. Total weight for the foil kit was 140 pounds, 60 pounds for each of the foil assemblies mounted forward, plus 20 pounds for a small foil assembly at the stern. This was a test set of foils made of carbon steel, but stainless steel was planned for the production model. The rear foil assembly was permanently mounted to the hull for the test, a disadvantage because it makes trailer launch impossible. The side mounted foil assemblies can be raised out of the water by hand. The production model planned to include hydraulic retraction of all three foil assemblies. The foil angle of attack is adjustable from within the cockpit over a range of 3 degrees to compensate for changing loads. The author describes a crash landing that occurred during the test due to striking a piece of wood flotsam… no damage to the foils, and the strike was not severe enough to shear the safety pin. The installed price of the planned production kit would be $400 per boat. According to the author, “it is doubtful that fishermen would go for it: those foils are just something else to wrap a line around.”
“James Bond’s Weird World of Inventions,” Popular Science, January 1966, pp. 60-63. “Thunderball’s prize piece of gadgetry is a $300,000, 64-foot hydrofoil yacht… production designer Ken Adams couldn’t find a hydrofoil imposing enough for the wide-screen Panavision film, so he decided to build a cocoon aft on a 60-footer, nearly doubling the vessel’s length to an overall 110 feet… The cocoon can be jettisoned at the touch of a button, allowing the hydrofoil to zoom off at full speed. The hydrofoil has a 1320-hp Mercedes-Benz diesel and can hit a top speed of about 40 knots. But Adams can improve on that — by filming it at one-third normal camera speed. Normal projection speed makes the DISCO VOLANTE appear to do over 100 knots.”

Also in this issue, on page 82, is this news blurb with photo: “You can now order the 16′-4″ Larson Volero in hydrofoil-equipped models. so outfitted, the popular stock outboard runabout is capable of speeds topping 45 mph with a 60- or 75-hp motor on her transom. You swing the foils up for normal running by adjusting a hand control in the cockpit near the wheel. The boat is produced in Little Falls MN.” [This hydrofoil version was never produced, according to the Larson company – Editor]

James Bond Inventions in Popular Science January 1966
Brown, Stuart F., “World’s Fastest Sailboat — Two Masts and Three Self-Adjusting Underwater Wings Make For One Rapid Hydrofoil.” Photos by John B. Carnett. Popular Science, Volume 238, Number 1, January 1991. ISSN 0161-7370, Times Mirror Magazines Inc, New York, USA. This issue contains an article on the world sail speed record holding trimaran hydrofoil craft (trifoiler) LONGSHOT designed and built by engineer Greg Ketterman for racer Russell Long. The cover photo by John B. Carnett shows LONGSHOT sailing foilborne in choppy water. A speed of 37.18 knots (42.8 mph) was achieved on Stafford Lake in Lethbridge, Alberta while piloted by Russell Long. At the time, this was the all-out world record for sailboats (100 square foot sail area or more), though even at that time the speed for wind surfers (under 10 square metres of sail area) was significantly higher at 49.4 miles per hour. In the article, Ketterman indicated it should be possible to exceed 50 mph when sailing LONGSHOT in strong steady winds.
World's Fastest Sailboat Article -- Popular Science January 1991
Jackson, William D, Naval Architect, “Build Your Own Hydrofoil Speedboat, ” Science and Mechanics Feb 1960, Craft Print Project No. 304. p.176-179. Plans for building add-on hydrofoils for almost any boat up to 16 feet. The designs are “the result of designing and testing many different types and sizes and shapes of hydrofoils over a period of several years.” Foils are constructed of steel framework with fiberglass foil-shaped lifting surfaces. The next (Apr 1960) issue has plans to build the boat used to test these add-on foils.
Science and Mechanics February 1960
“Jet Hydrofoil Shoots at World Record,” Popular Mechanics, August 1953, pp 70-71. Five B&W photos of Frank and Stella Hanning-Lee’s WHITE HAWK. From the accompanying text: “…two Britishers, Mr. and Mrs. Frank Henning-Lee [sic], aim to break that speedboat record with their jet-powered craft, the WHITE HAWK, on Lake Mead, Nevada, this fall. The man-and-wife team collaborated on the design. Mrs. Henning-Lee [sic] (an American by birth) is the driver… Top speed of the boat to date is 125 miles per hour. But that was loafing along on a stability run in England. when Stella Henning-Lee [sic] opens it up on Lake Mead, she is certain that the speed record… will be held, for the first time, by a woman.”
“Carnival of New, Way Out Watercraft,” Popular Mechanics, July 1963, pp 83 – 85. Among the watercraft depicted are two hydrofoils:

  • FRESH I,”jet-propelled hydrofoil built by Boeing for the Navy has hit 60 mph on Puget Sound, is expected to reach 115 mph with different foils system… the 53-foot flying cat is strictly an experimental craft and will be used to study super-cavitating foil design.”
  • HYDROMARINER, “28-foot cruiser for pleasure market has beam-width surface-piercing foils that retract hydraulically, giving boat docking draft of only 1 foot.”
Cover of Popular Science July 1963
Popular Mechanics September 1967 – An 11.5 ft. one-person hydrofoil developed by Italian designer Rentato Castellani of Verbania can hit 35 mph with an 18-hp outboard engine. The steerable front foil permits tight turns and thrilling acrobatics according to PM. The fiberglass hull is foam-filled and unsinkable, plus it comes apart for easier carrying. The designer intended to sell this craft in kits, but IHS is unaware of any that were sold. Anyone with more information about the fate of this design is encouraged to contact IHS.

 

Renato Castellani, Popular Mechanics September 1967
Zimmerman, Bob, “The Biggest, Fastest ‘Flying Boat’ Yet!” Popular Mechanics December 1968. Technical art by Fred Wolff. “It’s 212 feet long and displaces 300 tons, but when it goes up on “stilts” it skims across the water — even heavy seas — at better than 40 knots… the PLAINVIEW, made by the Lockheed Aircraft Corp., is the largest hydrofoil ship ever built… it is intended to do the work of a destroyer. A hydrofoil could become the only surface ship that can outrun and outmaneuver a nuclear submarine. It would be large enough to carry sophisticated detection and tracking gear and torpedo launchers. In a foilborne chase, it would be immune to the bouncing and tossing that can interfere with the accuracy of weapons systems in a conventional ship traveling at high speed… Other promising areas are mine warfare, recon missions, amphibious assaults, short-haul transportation of personnel, and oceanography.”
PLAINVIEW, Popular Mechanics December 1968
“Hook’s Hydrofin – Boat Rides on Stilts,” Mechanix Illustrated, Apr 1952, pp. 84-85. “The basic elements are a fuselage (completely out of the water while the boat is in motion), three fins or hydrofoils (under the surface) which are connected to the fuselage by supporting struts or hydropeds, and of course, a power plant. Then, there are two forward projecting stilts, called jockeys, which predict the water surface in front of the foils… Standard Hydrofin production models are 12-1/2, 18-1/2, and 24-1/2 feet long, carrying 2, 5, and 10 people… The manufacturers — Atlantic Hydrofin Corporation of Miami FL… “
Hydrofin Hydrofoil in Mechanix Illustrated April 1952
Mechanix Illustrated Nov 1962, HS DENISON — “World’s First Ocean-Going Hydrofoil — New US Wonder Ship To Top 90 Miles an Hour! The HS (Hydrofoil Ship) DENISON, which has flown over the water at 50 knots and which, it is hoped, will do as high as 80 knots (or about 90 mph in landlubber lingo) will be the first operational; ocean-going hydrofoil ship in the world… Development was undertaken jointly by the Maritime Administration and the Grumman Aircraft Engineering Corp. Fifty-seven contractors took part. After a thorough test program to be conducted by Grumman, the ship will be turned over to the Maritime Administration, which will charter it to Grace Lines for use as a passenger ship. Carrying 60 passengers, the DENISON will fly between Florida and the Bahamas.
Denison, Mechanix Illustrated November 1962
“All about Hydrofoil Craft,” Practical Mechanics, Aug 1961. A survey article of hydrofoil craft in service at the time, in Russia, Switzerland, Italy, Scandinavia, Japan, and South America. From the article: “Until 1959 the Shell Oil Company of Venezuela relied on orthodox high speed launches to carry workers out to the drilling rigs 40 miles off-shore on Lake Maracaibo. Now they have PT 20 hydrofoil boats which carry the same load of 66 passengers at the same speed, on well under half the horsepower… larger PT 50 boats are now working between La Guaira on the Venezuelan coast and Isla de Margharita, 120 miles away in the Caribbean Sea… the River Rhine Police have used hydrofoil launches since 1954… the Suez Canal Authority uses a hydrofoil inspection launch…the Soviet authorities plan to have 285 [hydrofoil boats] in operation on rivers and lakes by 1965… There is of course no possibility of putting ships like the CANBERRA or the QUEEN MARY on foils. The latter would require two million horsepower to make use of them, ten times her present engine room output.”

Granberg, W.J., “America’s First Hydrofoil Ferry,” Mechanix Illustrated, Jul 1961, p.75.  One page consisting of a paragraph of descriptive text and three B&W photos of the FLYING FISH, which operated a ferry route between Bellingham WA and Victoria BC Canada. According to the article, FLYING FISH was a “65-ft., 60-passenger aluminum-hull hydrofoil ferry boat, the first of its type to operate in American waters. Hydraulic controls in the wheel house adjust foil angles for maximum performance under particular weather conditions and at various speeds. The Italian-built craft carried passengers between Italy and Sicily before being purchased and brought to the USA by Dr. Frank A. Colderone of Hempstead NY.”

Mechanix Illustrated, Jan 1959. Contains article on hydrofoil boat design. No details available.

More Hobbyist Magazine Titles (No Photo Available)…

  1. “10′ Hydrofoil Boat or Conversion,” Boat Builder’s Handbook Annual #4, #567 1960 ed, Science and Mechanics – No further details available
  2. “Novel Hydrofoil Cruiser,” Mechanix Illustrated Boating Issue Apr 1956 – No further details available
  3. Popular Science September 1964 – “Big Russian Hydrofoil”
  4. Popular Science August 1963 – “Fast Hydrofoils ‘Fly’ Jet Cat”
  5. Popular Science April 1973
    • 250-Passenger Hydrofoil: “Jumbo Jetfoil Will Be Super-Fast, Super-Smooth,” by Ben Kocivar. pp 76-78, 152. “One of the world’s biggest airplane makers, Boeing, has announced it is going into the boat-building business. The aerospace giant will produce a fleet of 250-passenger, turbine-powered hydrofoils able to cruise in ocean waters at a zippy 50 mph. Boeing already as orders for 11 craft (at $3.5M each) for use in the Hawaiian Islands, Hong Kong, and across the English Channel. Not yet announced by Boeing, but strongly rumored, is domestic service for New York, San Francisco, and other major cities. Boeing forecasts a total market for about 40 of its boats within five years and 100 within 10 years.”
    • “Copter-towed Sea Sled Clears Minefield, ” p. 90. “The Navy’s new Mark 105, an unmanned mine sweeper… is towed by helicopter — up to 80 knots — on four fold-up hydrofoils.”
  6. Walker, Lester C., “Ships That Fly on Wings — Water-transportation Speed Will Triple With Boats That Don’t Float, But Fly,” Popular Mechanics Feb ’61, pp 102 – 105, 268. Good overview of commercial, military, and sport hydrofoils available and planned at the time. Photos of XCH-4, Grumman’s SEA WINGS, FRECCIA DEL SOLE, Grumman’s 15-foot runabout, Gordon Baker’s MONITOR sailing hydrofoil, a Russian Meteor, and some military vessels.
  7. “Aeroplane-Hydroplane Designed by Dr. Bell,” Popular Mechanics, Jan 1920, p. 2. (No further info available)
  8. Popular Mechanics May 1963 – “Squirt Gun on Hydrofoils -Spouting a 30-foot stream of water from a pipe draped over the transom, Boeing’s 2-1/2 ton turbine-powered LITTLE SQUIRT streaked across Seattle’s Lake Washington on an overcast day in January and became the first boat to successfully combine hydrojet propulsion with a fully-submerged foil system. Engineers hope that this one-of-a kind research boat will provide them with valuable information on whether hydrojet propulsion might be used on large, ocean-going hydrofoils. Power transmission, one of the toughest problems in any hydrofoil design, becomes even more difficult in the 100-ton-and-over range. Boeing’s 20-foot Pump Jet incorporates an ingenious solution to the problem.”
  9. “Jet Hydrofoil Shoots at World Record,” Popular Mechanics, August 1953,  pp. 70-71. Short article and 5 photos of Frank and Stella Hanning-Lee and their hydrofoil WHITE HAWK.
  10. Everyday Science & Mechanics September 1932. Contains article on Huge Flying Boat (hydrofoil). No details available.
  11. Modern Mechanics, ???1929, “Racing Over the Water at 100 Miles per Hour!” by Charles Hall.
  12. Quick – The Picture News Magazine, Vol. 1 No. 3 Oct. 28, 1953  “Men: Get Out of the Way!” Triangle Publications Inc., Philadelphia, Penn. Small format bi-monthly magazine, 5 x 7.25 inches, 64 pages – all pictures and no advertising. Include short article with four color photos of the the Hanning-Lee White Hawk – an early hydrofoil speedboat powered by a Rolls Royce Derwent jet engine which incidentally gave it a power/weight ratio of one which would have it allowed it to take off like a rocket if it were pointed skyward. It was piloted by Stella Hanning-Lee and designed by her husband Frank Hanning-Lee, a British experimental boat builder. The color photos include shots of Stella and the boat in action.
History and Classics
Classic Fast Ferries – “the ‘Cyberzine’ about hydrofoils, catamarans, air-cushioned vehicles (ACVs), and other classic fast ferries. This is an on-line magazine in Adobe Acrobat format, free of charge. Current and past issues can all be viewed, printed, and/or downloaded from the Classic Fast Ferry website, editor Tim Timoleon.
Classic Fast Ferries Cyberzine Hydrofoils
“US Navy on Stilts,” Sea Classics, Jan.1974. Has article on Navy PHMs, also “Hydrofoils of the Third Reich.”
US Navy on Stilts (hydrofoils) i n Sea Classics January 1974
von Schertel, Baron Hanns, “Hitler’s Hydrofoils,” The Best of Sea Classics, Summer 1975 and Sea Classics Jan 74, Challenger Publications, Inc. Canoga Park CA, USA, pp 4-9, reprinted from Aviation & Marine Magazine, France. Baron von Schertel first began experimenting with hydrofoil craft in 1927. This article gives details on German hydrofoil development during World War II. In 1939, the military first became interested in a 2.8 ton hydrofoil demonstration boat. Various hydrofoils followed that craft, including the VS 6, VS 8, VS 10, TS-1 Coastal Surveillance Hydrofoil, Single-Seat 3-ton torpedo boat, and the 4-ton Pioneer Corps workboat.
Hitler's Hydrofoils, Best of Sea Classics 1975
Keene, Tony, “Canada’s Ill-Fated Hydrofoil Sub-Hunter,” Sea Classics, June 1991, vol. 24, No. 6, pp. 46-53. “When built she represented an entirely new and radical form of sub-hunter. But her glory was short-lived and the BRAS D’OR finished her days as an ignoble museum ship… It was the Royal Canadian Navy’s objective to produce an operational vessel, a winged anti-submarine warrior capabile of patrolling the North Atlantic sea lanes. This project, designated FHE-400, resulted in a three-phase contract being signed by de Havilland Aircraft of Canada in 1963, calling for final sea trials and the handing over of the ship to the Royal Canadian Navy by 1969 when it was felt that firm proposals would have to be made to replace the old steam frigates then in service…”
Hydrofoil Submarine Hunter in Sea Classics June 1991

More Classics Magazine Titles (No Photo Available)…

  1. Sea Classics, January 1983, “New Navy Hydrofoils — Two Experimental Gunboats Prove Themselves and Then Some in Harsh Tests”. No details available.
Ferries and Other Commercial Ships and Craft
Hovering Craft and Hydrofoil, Volume 18, Number 7, April 1979. The International Review of Air Cushion Vehicles and Hydrofoils. Was published monthly by Kalerghi Publications, London. The magazine was later published as High-Speed Surface Craft and is currently released under the title Fast Ferry International. The cover of this issue features an artist’s impression of HMS SPEEDY by Boeing Marine Systems. HMS SPEEDY was a derivative of the Jetfoil series of passenger hydrofoils and was evaluated for a period of time by the Royal Navy. Inside the issue is a six page article on this hydrofoil by Antony Preston which includes photos of HMS SPEEDY under construction at the Boeing factory in Seattle and a number of sketches of the propulsion and control systems.
Hovering Craft and Hydrofoil April 1979 Features HMS Speedy
High-Speed Surface Craft Incorporating Hovering Craft and Hydrofoil, October 1982, Vol. 21, No. 10. Published by Capstan Publishing Company Ltd, Surry, UK. This journal was previously published as Hovering Craft and Hydrofoil and subsequently became Fast Ferry International. While the cover of this particular issue features a high speed catamaran by Cougar Marine, it contains several articles on hydrofoil themes including: International Hydrofoil Society North American Association First Conference; Current status and future prospects for US commercial hydrofoils; Current status and future prospects for Far East commercial hydrofoils; The evolution of the NIBBIO class hydrofoil from TUCUMCARI; Reconstruction of the HD-4 hydrofoil; Unhappy debut for new Jetfoil service; and History of US involvement in developing the hydrofoil (part 3).
Hydrofoil Articles in High Speed Surface Craft Magazine
Pierless Magazine, Future Ferries, The Final Frontier, April 2000. Includes article on Ultra-fast hydrofoil ferry proposed by Hydrofoils Inc.
future hydrofoil ferries in Pierless magazine
Fairplay International Shipping Weekly, Vol 274, No. 5052, 26 June 1980. Published weekly by Fairplay Publications Ltd, London. This issue features a cover photo of Boeing Jetfoil 929-115 CU na MARA, which was with B+I on a Liverpool to Dublin run at the time. The issue features a two page article by Michael Hood examining two Jetfoil services.
Jetfoil Article in Fairplay Shipping Weekly
“Hitachi Zosen News” Volume 5, Number 6 of August 1962 (also apparently issue 30). The blurb about the front cover states: “The Port of Takamatsu on Shikoku Island is one of the key ports of marine traffic on the inland sea of Japan. In the photo is shown the hydrofoil boat (constructed by our company) connecting the Osaka and Kobe districts with Port Takamatsu.” Click Here for a close up of the PT-20 in the photo.
Cover of Hitachi Zosen News August 1962 with hydrofoil
Ship and Boat International, Issue 96/1, January/February 1996. Published ten times a year by The Royal Institution of Naval Architects, London, UK. The cover of this issue features the second commercial example of the Kvaerner Fjellstrand FoilCat, Barca, which at the time of publication had entered service between Hong Kong and Macau with Far East Hydrofoils. The 35 metre foil supported aluminium catamaran is powered by a pair of 4485 kW GE LM500 gas turbines driving KaMeWa 80S11 waterjets through MAAG gearboxes. The craft can carry 403 passengers. While a speed of 52 knots was achieved on trials, the normal service speed is about 45 knots. This issue includes a short one third of a page article on the FoilCats. The journal from time to time features other hydrofoil production news.
cover of Ship & Boat International with Foilcat hydrofoil
Speed at Sea, The Journal for Fast Ship Operators, Volume 7, Issue 3, June 2001. ISSN 1359-4222. This Journal is published six times a year by Speed at Sea Publishing, Enfield, UK. From time to time, items related to hydrofoils or hydrofoil-assisted craft will appear in the journal. The June 2001 issue for example features a three-page review of the 54.5m hydrofoil-assisted trimaran TRIUMPHANT built by North West Bay Ships in Tasmania, Australia. The trimaran is equipped with a Maritime Dynamics, Inc. lift and ride control system for which the lifting surfaces consist of a pair of hydraulically actuated foils between the main hull and side hulls as well as trim tabs aft on the centre hull. The foils not only improve the motions of the vessel in waves, but additionally provide lift thereby enhancing the overall performance of the ship.
Cover of Speed at Sea with hydrofoil trimaran
Work Boat World, Volume 21, Number 7, October 2002. ISSN 1037-3748. This Journal is published twelve times a year by Baird Publications Ltd, Hong Kong. As with other such journals, items will occasionally feature hydrofoils or hydrofoil-assisted craft. The October 2002 issue features a one-page review of the 40.2m hydrofoil-assisted catamaran ‘Linda’ built by Almaz Marine yard in St. Petersburg, Russia. The catamaran is equipped with a pair of bow foils and the sterns of the demi-hulls support the remaining weight and incorporate a pair of waterjets.

More Commercial Hydrofoil Magazine Titles (No Photo Available)…

  1.  “SeaFlite Jetfoil — The Boat That Thinks It’s a Plane,” Flying Colors, (Braniff Inflight Entertainment Magazine) Vol 6 No. 1 1977
  2. 1st Annual Encyclopedia of Vertical Lift Craft, June 1967, Vertical World . A magazine of Helicopters, V/Stols, ACV’s, Hydrofoils. Approx. 11 1/4″ x 8 1/4″. 98 pages.
  3. Sealink News, Edition 34, September 1981, “The House Magazine for staff of Sealink UK Limited.” Feature ship is the RMT Dover – Ostend Boeing Jetfoil Princesse Clementine – full color centerspread with technical details and reports on her introduction.
Military Hydrofoils
Air West 1968 Tucumcari Article With Photos
Air West Magazine, 1968 50th Issue
Shethar, Alan, “Wings Upon the Water: The Hydrofoil,” All Hands, The US Navy Bureau of Personnel Career Publication, Jul 73, pp2-7. Photos and text descriptions of PHMs, AGEH-1 PLAINVIEW, PCH-1 HIGH POINT, and PGH-2 TUCUMCARI
All Hands Magazine July 1973
Christy, John, “Punch-Packing Sea Skimmers,” International Combat Arms, May 1985, Vol. 3, No. 3, Petersen Publishing Co., Los Angeles CA 90069, pp 39, 68 – 74. Lots of good photos. From the text: “…by the time the NNAG studies, with input from as many as 11 navies, were completed and the three signatories to the “Memorandum of Understanding,” the U.S., Italy, and the Federal Republic of Germany, had completed the signing, the size of the projected vessel had doubled. With all the performance factors cranked into the equation, and all the machinery and weapons added, the 74-foot prototype design had grown to 130 feet with a hullborne tonnage of 224 tones (39.5 meters and 228 tonnes). Cost factors were commensurate with the increase in size, and by 1974, Ital and the FRG had opted out, leaving the U.S. and Boeing to go it alone. The Italians downscaled their requirements and made a license agreement with Boeing to use the original TUCUMCARI design, modified for missile use, and the Germans decided on the Luerssen S 143 hullborne FPB…”
PHM Program Review in Combat Arms magazine
Naval Engineers Journal, Volume 95, Number 5, September 1983. ISSN 0028-1425. Published by the American Society of Naval Engineers, Inc. (ASNE). This issue features a cover photo with all six PEGASUS class PHMs flying together for the first time in US Navy history. The mission took place off Key West, Florida, where all the hydrofoils were stationed. Photo was provided courtesy of William M. Ellsworth and PHM Squadron 2 based in Key West. The caption for the photo also indicated that it would be unlikely that all six hydrofoils would operate together again, as some would be rotating through shipyard cycles. The Naval Engineers Journal from time to time has included technical articles related to naval hydrofoil design.
PHM Formation on cover of Naval Engineers Journal September 1983
Naval Engineers Journal, Volume 97, Number 2, February 1985. ISSN 0028-1425. Published by the American Society of Naval Engineers, Inc. (ASNE). This special edition features comprehensive reviews of a range of ‘advanced naval vehicles’, including hydrofoils, Surface Effect Ships (SES), Wing-in-Ground Effect (WIG) craft, Air Cushion Vehicles (ACV), Small Waterplane Area Twin Hulls (SWATH), planing hulls, and modern monohulls. This is an ideal source of background information in considering the merits of different craft types for particular roles.
Naval Engineers Journal February 1985
Naval Forces, Vol.VI, No.2, 1985. Published by Monch Publishing Group. Features cover photograph showing the USS Hercules. Although this issue does not contain an article on the PHM class, the journal does deal with naval hydrofoils from time to time. The blurb for the cover photo states: “The USS HERCULES (PHM 2), one of the six patrol hydrofoil missile craft which were built by Boeing Marine Systems in Seattle, Washington. They are currently operational with the US Navy in the Caribbean with PHM Squadron 2, at Key West, Florida. The squadron became operational in 1983. These craft are capable of over 40 knots and are armed with eight Harpoon missiles, one Oto Melara 76 mm gun and Mk 92 fire control system. This issue does contain one small black and white photo of a Chinese Huchuan class hydrofoil torpedo boat as part of an article on the Chinese navy (Hu Chwan is an alternate spelling for this boat class; it means White Swan).
PHM-2 on cover of Naval forces magazine
Copeland, Earl Jr., “Hydrofoils,” National Defense, Mar-Apr 1970, Vol. LIX, No. 329, published by the American Defense Preparedness Association, Washington DC. pp 382 – 386. Survey of the state of the art for hydrofoils at the time of publication. Discussion and photos of PHM-1 PEGASUS, FLAGSTAFF and SUPER FLAGSTAFF (concept), DENISON, PLAINVIEW, HIGH POINT, Philippine Navy Patrol Craft, H-890, RHS-140 ferry, Italy’s SWORDFISH and PAT 20, seagoing PT-150, PT-50 BALSA SEAWING, Seaflight L90 ferry, Canada’s BRAS D’OR, and TUCUMCARI. Discussion without photos of BUREVESTNIK, BYELORUS, CHAIKA, CYCLONE, DELPHIN, LUCH (Ray), MIR, NEVKA, STRELA,  Kometa, Meteor, Pchela (Bee), Raketa, Sputnik, Typhoon, Nikhr (Whirlwind), Volga, Molnia
“Israel’s Hydrofoils,” Defense Update International, Born in Battle, No 66, 1985. No further info available.
International Defense Review, Volume 16 No. October 1983. ISSN 0020-6512 (SZ), Monthly journal published by Interavia S.A., Geneva, Switzerland. In English, French, German and Spanish editions. This issue features a cover photo with the Italian Navy hydrofoils ASTORE and GRIFONE, two of a class of 60t hydrofoils built by CNR. A four page article on the Nibbio class is presented in the issue which was prepared following the delivery of the sixth and final vessel of the Italian navy. Also see Vol 4, No. 6, December 1971 of this magazine for an article on military hydrofoils.
International Defense Review October 1983
Firepower – The Weapons the Professionals Use – and How. Published weekly by Orbis Publishing Limited / Aerospace Publishing Ltd, London, 1990. Volume 3, Issue 33 features the US Navy’s PEGASUS class hydrofoil HERCULES (PHM 3) on the cover and provides the general particulars of that class and other dynamically supported and conventional fast attack craft in its contents. 23 pages of text and photos.
Firepower Magazine 1990 Volume 3, Issue 33
Navy International, Vol. 78, No. 11, November 1973. Published by Maritime World Ltd, Surrey, UK. This issue features the Italian Navy hydrofoil SWORDFISH (P 420) on the cover and a four page article of the Nibbio class hydrofoil following sea trials of the first of the class. There is also a five page article of the US Navy’s Surface Effect Ship program in this issue.
Navy International Magazine November 1973
Zimm, LCDR Alan D., US Navy, “PHMs: Unique Ships, Unique Problems, Proceedings, Volume 108/2/948 February 1982, pp 90-93. Proceedings is published monthly by the US Naval Institute, Annapolis, MD, USA. ISSN 0041-798X. The cover of this issue features USS TAURUS (PHM-3) taking a tight turn during tests at Puget Sound. The article in this issue deals with the complexities of how to manage the PHM in the USN fleet and the need for doctrine and tactics to suit the unique characteristics of the class. The article responds in part to an earlier article by LCDR Linder entitled “PEGASUS: Winner or Also-Ran?” published in the Sep 1981 issue of Proceedings .The well known aerial photo of a PHM executing a “Figure 8” is captioned, “Is the PHM here demonstrating the maneuverability of the ship or the direction of the PHM program?”
U.S. Naval Institure Proceedings February 1982
Jane’s Defence Weekly, Volume 2, Number 7, 19 August 1989. As the title suggests, JDW is a weekly defence journal. From time to time, items concerning naval hydrofoils will appear in the weekly. This particular issue features a cover photo with an Italian Navy Sparviero class (also known as Nibbio class) hydrofoil, and subtitle ‘Japan opts for Italian hydrofoils’. A half page article by Kensuke Ebata in Tokyo notes that the Japanese Defence Agency has requested three Italian Sparviero class hydrofoil missile boats for its Maritime Self Defence Force in its FY90 budget. The hydrofoils were to be built under license in Japan.
Jane's Defence Weekly August 1989
HIGH POINT Joins the Navy,” Undersea Technology, Nov 1963, Vol. 4, No. 11, Compass Publications, Inc. Arlington VA 22209, p.23. Introductory text and four B&W photos. From the text: “The new hydrofoil craft HIGH POINT , has entered the service as the Navy’s first operational hydrofoil craft. Largest hydrofoil in the Nation, she’s currently undergoing extensive testing at Puget Sound, Washington. The 110-ton ship, designed by the Navy’s Bureau of Ships and built by the Boeing Company, will soon head south to join the Pacific Fleet… armament on the HIGH POINT  consists of four MK 32 torpedo tubes, two on each side, and a .50 cal. machine gun mounted just forward of the pilot house.”
Farther, Spring 1987 (Vol. 2, No. 1) PHM-1 USS PEGASUS cover. Article about PEGASUS. Back in the 1980s, Electronic Arts published a magazine that was sent to people that registered their software.  These magazines featured game news and interviews with the creators. It’s not just marketing hype – there’s some good content also. No further (Farther!) information available.

More Military Magazine Titles (No Photo Available)…

  1. Aviation Week and Space Technology 22 Feb 60 contains an industry survey of hydrofoils. No further info available.
  2. Pacific Defence Reporter Aug 1981, “The Hydrofoil As a Weapon,” by Ian Hamilton. “The hydrofoil, with a capability of speeds close to 160 km/h, clearly has both offensive and defensive capabilities… The first hydrofoil boat was the product of an accident in 1861, when Thomas Moy, an Englishman, decided to study the aerodynamics of wings by observing the underwater swirls they created. Having attached wings to his craft, he ventured out onto the Surrey Canal. To his surprise, the ship rose from the water — and unintentionally he had invented hydrofoils. But it was not until 1898 that the first efficient hydrofoil was designed by Enrico Forlanini of Milan…”
  3. Warship International Nov 4, 1975, Vol XII No. 4, published by the Naval Records Club (later became the International Naval Research Organization –INRO — which now publishes Warship International), “New Addition to the Fleet: Pegasus (PHM-1) Missile-carrying Hydrofoil Ship” (1 page with photo).
  4. Our Navy Magazine Vol. 58, No. 2, February, 1963, “The Future for Hydrofoils.” No details available
  5. Sea Combat, August 1978, Contains article on USS PEGASUS (PHM-1) hydrofoil missile ship.
  6. 1st Annual Encyclopedia of Vertical Lift Craft, June 1967, Vertical World . A magazine of Helicopters, V/Stols, ACV’s, Hydrofoils. Approx. 11 1/4″ x 8 1/4″. 98 pages.
  7. Naval Record Vol. III, No. 4, Jul/Aug 1968, Monitor Publications London, p. 65. Two small Boeing B&W photos, one of PGH-2 TUCUMCARI, the other of PCH-1 HIGH POINT. The caption reads, “The [HIGH POINT] is fitted for anti-submarine duties and is armed with twin fixed tubes (angled from the centreline) for A/S torpedoes on each side amidships, a 40mm gun forward, and with VDS at the stern; while the [TUCUMCARI] is armed as a gunboat with a 40mm gun forward, an 81mm mortar aft, and twin .5 inch guns abaft the bridge. Both craft have amply demonstrated their seaworthiness and manoeuvrability in rough weather trials of the West Coast, and have retractable foils for operating in the displacement mode.”
Yachts, Sailboats, and Motorboats
Multihulls Magazine, Volume 25, Number 3, May/June 1999. ISSN 0749-4122. www.multihullsmag.com e-mail: multimag@aol.com Editor: Charles K. Chiodi. The magazine is published bimonthly and from time to time may feature articles concerning hydrofoil-supported multihull sailboats. This issue includes a two-page article with photo by Dave Carlson titled “Foiling with one of the Giants”. The article describes Dave Carlson’s experience with working on and sailing a foil-supported Hobie 18 designed by the late Dave Keiper. For updates on Dave Carlson’s continued work with foil kits in Gainesville FL, visit his website or contact him by email.
Multihulls Magazine May/June 1999
Multihulls Magazine, May/June 1990 Issue. Cover illustration is of the Hobie TRIFOILER
Multihull World Magazine – Power and Sail, Number 47. ISSN 1034-5108. www.multihull.com.au / email: info@multihull.com.au. Editor: Paul Lynch, P&G Lynch and Associates. Issue 47, published early in 2000 features a cover with an artist’s impression of the VOLANTIS designed and to be built by HydroWing Hawaii. The four page article on this design includes a three view drawing of this 60 foot hydrofoil sailing vessel. The design has been co-developed by Sam Bradfield (hydrofoils), David Hubbard (sails) and Nigel Irens (hull). The goals of the VOLANTIS are described as “to capture the world’s speed record for sail powered craft, to break the world’s 24 hour distance record for sailing and to set new course records for open ocean races worldwide.” Other articles on VOLANTIS have been published in Seahorse Magazine (Nov.2000), Multihulls Magazine (Mar/Apr 2000), Composites Fabrication (March 2000), Canadian Yachting Magazine (Regatta 2000), and Yachting World (July[??] 2000).
Multihull World Magazine Issue 97
Yachting, April 1929. Contains article on 30-foot hydrofoil, text and photos. No other information available. If anyone can provided a photocopy to IHS, it will be greatly appreciated. Contact the webmaster@foils.org.
Vincent, R. E., “Beware Low Flying Boats — An Experimental Hydrofoil Craft With an Ingenious Theory for Stability,” Yachting World, May 1972, pp 98-99, IPC Transport Press Ltd, London, publishers. Article by a post-grad student. Paragraph headings are: Design Objective, Apparent Wind Analysis, Propulsion Device, Transverse Stability, Longitudinal and Directional Stability, Resultant Overall Design, Predictions of Future Developments, and Conclusion.

“Offshore at 40 knots,” Yachting World May 1998, pp 16-19. No details available.

Yachting World International, May 2002, Volume 154, Issue no. 3125. For more information on this magazine see www.yachting-world.com . This issue features the French sailing hydrofoil L’HYDROPTERE on the cover. The issue has 26 pages of content on the theme of “Greed for Speed”. Articles include “Speed Pioneers” tracing the history of speed sailing at the Portland Speed Week prepared by David Pelly, “Offshore record breakers” by James Boyd, “Breaking the 50-knot barrier?” by Matthew Sheahan, and “Pushing the Boundaries” by Elaine Bunting. There are nice photographs of the hydrofoil catamarans Spitfire, Techniques Avancees, Mayfly and Icarus, the small hydrofoil trimarans FORCE 8 and LONGSHOT, and the hydrofoil-supported trimarans PAUL RICARD and L’HYDROPTERE along with other fast sailing craft.
Johnston, Robert J., “Hydrofoils, Ships That Fly,” The Rudder, the Magazine for Yachtsman, The Rudder Publishing Co., 9 Murray St, NewYork 7, NY, Nov 1953, Vol. 69 No. 11, pp 30 – 33. Included 9 small B&W photos. Bob Johnston wrote this article as a Lieutenant Commander in the US Navy, serving as Hydrofoil Project Officer for the Mechanics Branch of the Office of Naval Research (ONR). The article traces the history of hydrofoil development through the contemporary date in 1953. Among the hydrofoils described are:

  • CAPT H. C. Richardson’s hydrofoil canoe (1908) and hydrofoil dinghy (with collaboration of N. White)
  • A. Guidoni’s application of hydrofoils to seaplanes in Italy (1911)
  • Alexander Graham Bell’s HD-4 (with assistance of Casey Baldwin and Philip L. Rhodes) (1919)
  • L.P. Coombs and E.T.J. Davies experiments in England with hydrofoils on seaplanes (1930s)
  • W. Grunberg of France – his patent for automatically adjusting the foil angle of attack (1938)
  • Sachsenberg brothers and Dr. O. Tietjiens experimental hydrofoils
  • German hydrofoils in the World War II era
  • J. G. Baker’s hydrofoil sailboat Monitor
  • Christopher Hook’s Hydrofin
  • William P. Carl’s hydrofoil research
  • The Hanning-Lee’s White Hawk
Carl, William P., “The Fantastic Hydrofoil Runabout – Its Development and Future,” The Rudder, Aug 1958 – How SEA WINGS hydrofoils developed from bathtub hobby to commercial reality. “This story begins in 1938, in Bob Gilruth’s bathroom… he started with 6-inch models…from the model tests, a full scale, 12-foot sailing catamaran with hydrofoils, CATAFOIL I was built and operated in the Chesapeake for several years.” The author started a collaboration with Bob Gilruth in 1943 that led to to world’s fastest open sea waterborne vehicle — the XCH-4. But the US Navy turned down the idea of an 80 knot patrol boat, so the author turned to commercial products. In October 1955 he tested SYNOTROPUSS, an 8-foot rowboat with fiberglass foils and 7 hp outboard that made speeds over 30 mph. The next test craft was a 16-ft Goodyear family runabout fitted with foils that could do 34-mph. In August 1956, the author associated himself with Grumman Aircraft engineering Corp. After months of testing a foil-equipped 15-ft aluminum runabout in Florida, the Grumman boat was placed on the market at the New York Boat Show, January 1957. Unfortunately, “there were so many man-hours of labor involved in production it put the cost out of reach of the mass market.” At the time this article was written, a new type of mount had been developed to allow the Sea Wing foils to be attached to many makes of 14- to 16-ft runabouts.
Hydrofoil Runabout, Rudder Magazine August 1958

  • “Hydrofoils – What the Future Holds,” Motor Boating, Sep 1962 (see photos). No further details available
  • “Foilborne Ferry Approved by Coast Guard,” Motor Boating, Feb 1963. No further details available.
  • Mitchell, James E. “The Commutaboat Hydrofoil: A Passenger Hydrofoil Boat Demonstrated at Oyster Bay,” Motor Boating, Feb 1963, pp 38-39, 101, 103 . “Except for ‘eyes’ staring from her bow, which turned out to be two powerful headlights, and for the shark’s mouth painted across it, she could have been an ordinary 22-foot outboard cruiser. On the pier, waiting to greet us were the three men who had been instrumental in bringing this controversial craft to our shores: John P. Humes, Robert C. Morrell, and C. Maxwell Carver, president and vice-presidents respectively of Commutaboat, Inc.. The corporation was formed with the option to manufacture in the US all hydrofoil designs produced by International Aquavion, Ltd. of London… And sometime in 1963 they will begin to appear on the market with a price tag of around #15,000.”
  • “Hydrofoil Sailboats,” Motor Boating, Jun 1955. No further details available.
  • “Hydrofoils,” Motor Boating, Apr 1950. No further details available

 

Joseph, James, “Wings for Your Boat; The Astonishing Story of Hydrofoils, Powerboat Oct 1960, pp 8-13, 68-69. Explanation of how hydrofoils work and a nice survey of existing and planned hydrofoils for pleasure, commercial, and military uses. The vessels depicted in the article’s 15 photos are Midwest Hydrofofin Co.’s foil kit (featuring the Christopher Hook concept of “wave-sensing skids which ride in front of boat”), Evinrude Motors’ dreamboat JETSTREAM by designer Brooks Stevens, Baker Manufacturing’s experimental Navy craft HIGH POCKETS with tandem surface-piercing foils, Rodrigues passenger boats operating in the Mediterranean, the XCH-4 designed for the Navy by William P. Carl with seaplane hull supported by two sets of foils forward and a single strut and foil aft, a Grumman concept passenger craft designed for the US Maritime Administration, two workboat models (one numbered MA-2133), and HALOBATES, a gas-turbine powered converted LCVP.

More Yachts, Sailboats, and Motorboats Titles (No Photo Available)…

  1. The Rudder Magazine, Oct 1911. Hydrofoil article; no copy or details available.
  2. Pacific Motor Boat September 1932 “Hydrofoils to Increase Boat Speed.” Article is about Dr. Oskar G. Tietjens, special engineer of the Westinghouse Electric and Manufacturing Company. Describes testing of HYDRO-SKIPPER model on the Delaware River
  3. Brennan, Walter X., “The Newest Hydrofoil Boat,” Yachting, Jan 1936, pp. 55 & 88. Contemporary news and background on the U.S. 3 hydrofoil racing boat (incl. 3 small B&W photos). Excerpts from the article: “The launching and first trials at Detroit of the new Evans hydrofoil boat aroused considerable interest in the subject… The hull, which was designed by P. L. Rhodes with F. W. (Casey) Baldwin as consultant, and built by John L. Hacker, is double planked and is extremely light… The weight of the entire hull is said not to exceed 850 pounds… A Packard Gold Cup motor is used, and aeronautical engineers who are working on the boat estimate a speed of over 150 miles per hour… Using the data they obtain in tests, they plan to build a larger boat with 50 percent more power if the plan appears practicable… More tests are to be made in Detroit waters until it becomes too cold, when the boat will be shipped to Florida for further experiments.”
  4. Boats Magazine, Apr 1955, “Running Trials on a Hydrofoil Boat”
  5. Mallery, Craig, “Boats With Water Wings — The New Hydrofoils,” True, The Man’s Magazine, Boating Yearbook, No. 3 1958. Includes description and photos of the Hook HYDROFIN by Christopher Hook, Grumman 15-ft. Runabout with Sea Wings (a US$595.00 option), and WATER HAZARD (“Hap Hazard sells plans for his hydrofoil system as well as aluminum extrusions for building the foils themselves.”) According to the article the Sea Wings foils were constructed of fiberglass and epoxy resin, mounted with metal retractable hinges.
  6. Power Boat May 1962, “New Hydrofoil Boat Makes Debut” (no details available)
  7. Miller, R.T., Commander, U.S. Navy, “Hydrofoil Craft”, Yachting March 1955, pp. 58-60, 127. Good overview of hydrofoil craft at the time, mostly engine-powered craft. Source of historical and technical data for the article was a paper “An Appraisal of Hydrofoil Supported Craft,” presented at the Annual Meeting of the Society of naval Architects and marine Engineers (SNAME) in Nov 1953 by LCDR P.N. Leehey, USN and CDR J.J. Stilwell, USN.
  8. Carl, William P., “Hydrofoils — The Story Behind the Wings Which Operate in Water,” Yachting March and April 1958 issues.
  9. Drake, Elliot, “Latest Look in Hydrofoils: For a New Experience in ‘Flying’ — Fit Your Boat With Hydrofoils,” Yachting, [exact issue unknown] 1960, p.94, 180 – ?. Four pages of descriptive text and several b&w photos showing details of the Sea Wings hydrofoil kit by William Carl’s Dynamic Developments, Inc. This is a follow-up to the William Carl article on the same subject published in the March and April 1958 issues of Yachting. From the text of this article: “Until now, to fly over the water on Sea Wings, you had to buy a complete 14′-6″ Grumman aluminum runabout with foils attached. The outlay started at $1595. This left others who already owned boats too far away from…”
  10. 1st Annual Encyclopedia of Vertical Lift Craft, June 1967, Vertical World . A magazine of Helicopters, V/Stols, ACV’s, Hydrofoils. Approx. 11 1/4″ x 8 1/4″. 98 pages.
Models – Display and Radio-Controlled (R/C)
Johnson, Frank, “1/32 Scale German VS8 Hydrofoil,” Scale Ship Modeler, Jul 82, Vol. 5, No. 4, Challenge Publications, Inc., Canoga Park CA 91304, pp 44 – 49, 57-59. The article is about the kit offered by 32nd Parallel Corp, now defunct, and is a must for anyone with this kit. The article includes 11 generously-large photos, of which 4 are in color. The text is historical information, description of the kit and of 32nd Parallel Corp. There is nothing in the way of detailed tips based on experience as to how to assemble or operate the kit (note: the IHS correspondence archives on R/C models contain discussion of operating problems and possible solutions). The author is formerly of the staff of Sea Classics Magazine. From the text: “…the VS-8 was a magnificent machine, beautiful in every respect and highly advanced for its time. Aside from the fact that the prototype’s 103-foot length made it the perfect size for 1/32 scale modeling (producing a 38.5 inch hull), it would also be the first hydrofoil (not to mention the first scale hydrofoil) ever offered in an operational R/C construction kit.”
Marine Modelling International – Plans and Construction Guide, 1998, Traplet Publications Ltd, Worcestershire, England. This guide features the RAPIER hydrofoil model (plan number MAR2392) designed and constructed by Graham Taylor on the front cover. There is also a photo and brief description of this 950mm long model designed for up to .40 sized internal combustion engines in the guide, but further details are contained in the December 1992 issue of the Marine Modeling Monthly magazine. See also “Wings Under Water; Graham Taylor Discusses Model Hydrofoils”, Marine Modeling Monthly, August 1991. For further details and photos of Graham Taylor’s two neat hydrofoil models, see his website. Here are citations taken from the site:

  • “Wings Under Water,” Marine Modeling Monthly, Aug 1991: Illustrated discussion introducing hydrofoil principles and model subject potential. 903 words 7 illustrations.
  • “Experimental Hydrofoil,” Marine Modeling Monthly, Jan 1992: Fully illustrated article outlining hydrofoil concepts and describing the design, building and experience gained from MK 1, an experimental 42ins long powered model designed by the author. 1616 words 13 illustrations.
  • “RAPIER Model Hydrofoil Boat,” Marine Modeling Monthly, Dec 1992: Full plans, assembly details, illustrations and instructions for construction of 37ins long glow-plug engine powered radio controlled hydrofoil model designed by the author. Model featured automatic adjustment of foil incidences to achieve tight banked turns. RAPIER plans now held by Marine Modeling Monthly plans library service, plans reference no: MAR2392. 2300 words 11 illustrations.
  • “Foiled Again!” Marine Modeling Monthly, Dec 1993: Illustrated article discussing latest developments in hydrofoil technology. 805 words 11 illustrations.
Marine Modeling Plans and Construction Guide 1968
Model Boats, Vol.47, No.558, 27 June 1997. ISSN 00819-8277. Published by Nexus Special Interests Limited, UK. Features a four page article with 13 photos and a small arrangement drawing of the Zytiron 24 model racing hydrofoil produced by Hydrofoils, Inc. This model is no longer produced.

(not shown) Model Maker & Model Boats, Jan 1966, “The British monthly journal for all model makers,” includes an article on Japanese hydrofoil models. No details available.

Bruce, Ian, “Hydrofoil Craft,” Meccano Magazine, Oct 59, Vol XLIV No. 10, pp 427 – 429, published in Liverpool England. Discussion of hydrofoil craft of the time, history, advantages over conventional craft, and explanation of how hydrofoils work. Photos of the first Saunders-Roe R-103 BRAS D’OR (re-named BADDECK in 1962 in anticipation of the construction of the larger FHE-400 which was to be given the name BRAS D’OR) and a Supramar PT-20. There is no information in the article about how to model the vessels discussed. From the text of the article: “.Compared to other types of speedboats of equal size, hydrofoil boats possess many important advantages. For instance, only half the engine power is required to attain the same speed. Fuel consumption is reduced by as much as half, and consequently the cruising range is nearly doubled. Economy in fuel, as well as the possibility of covering an increased daily distance as a result of much higher speeds, results in in a reduction of about 30 percent in operating costs.”
Gue, Frank, “Hydrofoils, a new dimension,” Radio Control Modeler, published by R/C Modeler Corp., 120 W. Sierra Madre Blvd; Sierra Madre CA 91024. Vol. 17 No. 5, May 1980, ISSN 0033-6866, pp. 72, 82, 84, 86-87, 90. Includes one line drawing and two small B&W photos. The author describes his successful experiments with hydrofoil landing gear on a 60″, .19-powered model airplane test bed. He created a series of model planes, logging over 1,500 flights at the time of the article. The article includes many tips on design, waterproofing, and operation. Quotes from the article: “A hydrofoil, fitted to an aircraft, lifts the immersed parts clear of the water so that displacement drag is eliminated. It also cures the glassy water syndrome, which can literally prevent respectable airplanes from taking off at all. The famous Canso patrol flying boat was subject to this… wavelets of two or three inches (scale height of more than one foot) don’t bother the model at all. On long swells, it glues down beautifully  while planing, thanks to its tricycle configuration until flying speed is reached, at which time it generally launches itself spontaneously for the top of the first swell over which it has airspeed…. Flying off hydrofoils is truly a new dimension to this marvelous hobby of ours. Try it! You’ll like it!”
Radio Control Boat Modeler, Vol.10, No.2, February 1996. ISSN 1043-8009. Published seven times a year by Air Age, Inc, Wilton CT, USA. Features a three page articles with photos of a 24-inch long fast electric hydrofoil model produced by Hydrofoils, Inc. This model is no longer produced.
Musciano, Walter A., “von Schertel’s VS-6 Hydrofoil Patrol Boat,” Young Men (formerly Air Trails Hobbies for Young Men) Nov 1955 Vol. 45 No. 2, Street & Smith Publications, Inc., New York. pp 34-35, 86. Article contains parts list, cutaway illustration, exploded view of structure assembly, and teensie-weensie plan (the full size plans were available by mail order for 50 cents: Hobby Helpers Plan #1155). The article explains a bit of hydrofoil history. An experienced modeler who wanted to model the VS-6 would find this article helpful, but the plan is tiny and short on dimensions. Too bad Hobby Helpers went out of business years ago. Some of their plans for model aircraft have been preserved and copied onto modern drafting media for sale, but it is unlikely the hydrofoil plan is available anywhere. The Hobby Helpers plans were printed on cheap paper, not designed to endure over many years.

Air Trails Hobbies for Young Men, July 1955, has plans for a for “Water Warrior” hydrofoil.  No further info available.

More Model Magazine Titles (No Photo Available)…

  1. Air Trails Hobbies for Young Men, July 1955, has plans for a for “Water Warrior” hydrofoil, and the Nov 1955 issue has an article on a von Schertel VS-6 hydrofoil patrol boat. No further info available.
  2. Gue, Frank, “Hydrofoils,” Model Airplane News, July 1974, pp. 50, 64. Air Age, Inc. White Plains NY. “Having trouble getting that waterbird of yours to unstick? If so, why not try hydrofoils [seplane landing gear] as suggested here!” Article includes sketch and instructions for adding hydrofoils to model seaplanes. The example used is a Navigator flying boat kit by C.A.Zaic Co; however enough specific information is given to allow addition of hydrofoils to most seaplanes, allowing for experimentation to optimize the exact location and size of the foils. From the article: “Too small a hydrofoil will not have the desired effect. Too large a hydrofoil will result in hull lift at so low a speed that the flying surfaces have no control, resulting in excessive pitching and pounding over wavelets… The hydrofoil should be far enough ahead of the center of gravity that its force vector lies ahead of the C.G. and exerts a slight nose-up couple. It should be far enough below the hull that interference is minimized and that the hull can be fully clear of the surface when the hydrofoil is still submerged. If the foil is too far forward, the aircraft will lift nose-high and plow rather than plane, throwing spray into the prop. If too far aft, of course, it will force the nose down. Foil incidence should be moderate: 4 deg. to 6 deg. to the waterline seems OK…”
  3. Model Ship Builder March/April 1999 No. 188, pp 41 – 50, “Building the Bell-Baldwin Hydrofoil HD-4,” by Dave Acker. This article was reprinted in its entirety as a special extra edition of the IHS Newsletter in Summer 2000. Equal mix of fascinating history and instructions for building a detailed scale model. Lots of photos. “As a prelude it should be known that the hull/fuselage of the HD-4 was lightly built. She was much like an old-fashioned canoe, which is to say made of formers or bulkheads connected by longitudinal stringers. This assembly was covered spirally with scarphed veneer stock and finally topped by a layer of 1/2 in. strip laid fore and aft. Embedded in the outer shell were steel wires for stiffness in the long axis. Spirally wound about the hull were eight pairs of cables for resistance in torsion. Final covering was marine glue, canvas, and dark gray paint. The hull was a 60 ft., cigar-shaped cylinder with a maximum diameter of about 5.75 ft. this hull was the main structural member providing flotation at rest, crew accommodation, fuel, and proposed military load. The forward wing-like sponsons supported the power plants and their mountings and carried ‘balancing hulls’ or pontoons of about 2 ft in length at their extremities. The hydrofoil sets, of multiple-blades, were four in number. Each blade had an air foil cross section. The ladder-like bow preventer was essentially an anti-pitch device helping in initial rising and was clear of the water when the craft was fully extended.”
  4. “The Mariners’ Museum’s Scale Ship Model Competition and Exhibition 2000,” Scale Ship Modeler (ISSN 1066-0275), Nov/Dec 2000 (Vol. 23, No. 5), pp. 36-37, 62. Features a 1:48 scale model of PHM-1 USS PEGASUS. Modeler Dean Leary of Statesville NC was awarded the Gold Medal under the Division I (Scratchbuilt) Class B (Powered Ships) category. “The Scale Ship Model Competition and Exhibition 2000 ran from June 17 until October 28, 2000. During these dates, visitors were able to see the top ship models in the world and participate in various activities associated with the exhibition on the opening weekend. For more information about the competition and exhibition, call The Mariners’ Museum at (757) 596-222 or (800) 596-2222, or write to: The Mariners’ Museum, 100 Museum Drive, Newport, VA 23606, or visit their Web site: www.mariner.org
  5. Radio Control Boat Modeller, Vol.1, No.4, May/June 1986. ISSN 0268-5248. Published monthly by Argus Specialist Publications Limited, UK. Features a short one page articles on the first successful model Jetfoil marketed in the UK, this being developed by Aries Hydrafibre of Portsmouth. The model designed by Martin Seymour is to 1:32 scale and was to be on sale from 1 May 1986 for a price of about 195 UK Pounds. The model is depicted in the article.
  6. Marine Modeling Monthly, March 1991, contains photos and drawings of the PHM Class; purpose of the article is to provide details to modelers of the PHM Class.
  7. “Wings Under Water; Graham Taylor Discusses Model Hydrofoils”, Marine Modeling Monthly, August 1991
  8. Gross, Colin, “Hydrofoil PT-50” Model Boats, Model & Allied Publications LTD, PO Box 35 Bridge ST, Hemel Hempstead, Herts, HP1 1EE, February 1981, Volume 31 No. 360, pp. 80-82. The article is informative about the experience of assembling the model, and it contains several suggestions for modifications, for example, “The most useful modification to improve the performance of the model is to replace the stiff spring coupling between the motor and the prop shaft.. Unfortunately, the usual Ripmax/Huco universal joints do not come in the correct size. However, if two type KC42 couplings are purchased, one may be opened out to fit the prop shaft, and the other to fit the motor. When joined by the couple converter, the new coupling can still be fitted to the model by pushing the motor forwards in its clamping brackets.” According to the article, the manufacturer of the kit is Sanko Seimitsu Co. Ltd, Japan. It was imported into England by Richard Kohnstam Ltd. The kit price in 1981 was ?59.99 .
  9. Model Boats, Vol. 32, No.382, December 1982. ISSN 0144-2910. Published monthly by Model and Allied Publications Limited, UK. Features part 6 of a series of articles on the subject ‘Model Powerboat Hull Design’ by Ron Warring. This part deals with the design of hydrofoil models and spans two and a half pages mainly concerned with sizing of foils for the model. The article does not describe or illustrate any actual hydrofoil models.
  10. Model Boats, Vol. 45, No.527, January 1995. Published by Nexus Special Interests Limited, UK. Features a three page articles plus four A3 size plan sheets to build the ‘High Rider’ model hydrofoil designed by Graham Goodchild. This stumpy looking surface piercing hydrofoil motor launch model is about 500mm long and is powered by a single electric motor.
  11. An article on the Boeing Jetfoil appears in the International Plastic Modeler’s Society Quarterly magazine, Vol. 17, No. 4, Summer 1982. No details available.
Seaplanes and Flying Boats – Hydrofoil Assist for Takeoff
Levy, Howard, “HRV-1 Hydrofoil Amphibian,” Air Progress – The News Magazine of Aviation, Condé Nast Publications, New York, Feb 1968, vol 22 no. 2, pp. cover, 38-39, 73-74. “… the hydrofoil seaplane can operate in sea states three times the size safely handled by a basic seaplane… For almost five years, David B. Thurston, President of… Thurston Aircraft Corporation of Sanford Maine has been conducting relatively unpublicized hydro-ski and hydrofoil development and flight evaluation programs for the US Naval Air Systems Command (NAVAIRSYSCOM)… It was during Spring 1964 that the Naval Air Test Center at Patuxent conducted an evaluation of an Edo-developed Grunberg hydrofoil on a Grumman JRF-5G… A second generation seaplane hydrofoil configuration called for a single, small foil positioned below the hull. The resulting design was a single supercavitating, penetrating hydrofoil considered suitable for use on the Grumman Hy-16 Albatross… a modified 1960 Lake LA-4A Skimmer amphibian was chosen as a scale flight test bed.” Note, a summary of David B. Thurston’s accomplishments is posted on the web, and includes information about his work with hydrofoil amphibians at Thurston Erlandson Corp
Air Progress, February 1968
de Cenzo, Herbert A., “Analysis of the Possibilities Presented by Hydrofoil Equipped Aircraft, Aero Digest June 1, 1944, Vol. 45, No. 5, Aeronautical Digest Publishing Corp. New York, pp 70-73, 128, 130.  Interesting discussion of the various issues, including artist concept drawings of a jet-propelled hyplane. From the text: “The following analysis is presented to point out some of the advantages and disadvantages of hydrofoil-equipped aircraft, referred to herein as “hyplanes”… Water-based aircraft are usually of two types, namely, flying boats and seaplanes… to simplify this analysis… it is presented in two parts. The first part deals with seaplanes, while the second is devoted to flying boats… The results obtained rate the land plane, the hyplane, the flying boat, and the seaplane… the seaplanes and larger flying boats are definitely outperformed by the hyplanes. However, in the small flying boat class it is questionable from a practical standpoint if the hydrofoil-equipped airplane would be the best… In conclusion, the opinion is ventured that most of the long-range, heavy-load carrying airplanes of the future will be jet-propelled hyplanes.”

 
We need more references… can you suggest any? Thanks!
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Joint Ventures Proposed to Operate, Manufacture/Market, or Design

Hydrofoils — Joint Ventures Proposed to Operate, Manufacture/Market, or Design

Messages are posted here as a service to IHS members and visitors to the website. Please be aware that IHS does not recommend products or services. While we know of no serious problems having arisen from messages posted here, we are not able to verify that offers posted here are legitimate or that individuals responding to the offers are sincere. Accordingly, caution should be exercised in initiating and conducting business as a result of messages posted here to ensure your personal safety and the safety of your financial account information.
Joint Venture Sought in Fiji

[3 Jul 03] I am looking for a partner to lease me a high powered boat with the following 70~100 passengers and with speed of 30~35 Knots. The service is geared towards the ferrying of tourists between islands . Matt (matai@mrd.gov.fj)
Joint Venture Sought in the Philippines

{23 Jun 03] I intend to operate a hydrofoil to serve the transportation of passengers between the two main islands in the Philippines. I plan to enter into a joint venture/partnership with a vessel/hydrofoil owner wherein the operation, management and manning will come from my side. Some important details to consider: Passenger capacity: 120-150; Speed: 35-40 kts. I am currently operating two fast crafts serving the same place. — Felicito Datinguinoo (luchijane@aol.com)
Hydrofoils — Wanted To Buy or Lease

Messages are posted here as a service to IHS members and visitors to the website. Please be aware that IHS does not recommend products or services. While we know of no serious problems having arisen from messages posted here, we are not able to verify that offers posted here are legitimate or that individuals responding to the offers are sincere. Accordingly, caution should be exercised in initiating and conducting business as a result of messages posted here to ensure your personal safety and the safety of your financial account information.More info on how and where to buy/sell/restore specific categories of hydrofoils can be accessed from our Posted Messages Bulletin Board Page. Please notify the webmaster if you discover a notice that is no longer valid, or if you are unsuccessful in contacting the individual or organization that posted the message.
Fast Ferry Expert to Assist in Procurement of Fleet

[14 Oct 03] My company is looking for a fast ferry expert to assist in the procurement of a small fleet of catamarans or hydrofoil vessels. We will consider purchase, lease, or joint venture partnership. Vessels must carry up to 150 plus passengers and travel at a minimum speed of 35 kts. Please contact me if you are interested and want more information. — Tom Dempsey dempsuryy@aol.com
Historic Hydrofoil(s) Wanted in France

[9 Sep 03] I seek a few old, small Russian hydrofoils in any type of condition (Raketa, Polysie or Belarus hydrofoil). This is to make a houseboats here in Toulouse, the air and space center of France… a few people are interested in this. Also, and in addition to the houseboat project, I want to start a non-profit association to restore one medium or large Russian experimental hydrofoil (Sputnik, Chaika for example)… so I am looking for a good candidate to restore for historical purposes. The hydrofoil for non-profit restoration should be an experimental craft. — Jeff Legendre (a1493@hotmail.com)
Need High-Speed Ferry Boat in Indonesia / Borneo

[12 Jul 03] I am looking for someone to sell, lease or joint venture with me a high powered boat with the following 80~100 passengers and with speed of 30~35 Knots. The service is geared towards the ferrying people between Tarakan Island and Kalimantan. — Villepin (villepin@hotmail.com) Click Here to post a response to this message.
Hydrofoil Vessels For Sale

Following are some of the more recent announcements. More info on how and where to buy/sell/restore hydrofoils can be accessed from our Posted Messages Bulletin Board Page. Please notify the webmaster if you discover a notice that is no longer valid, or if you get no reply when contacting the individual or organization that posted the message (unfortunately, many sellers have been remiss in notifying IHS when the vessel is sold).Messages are posted here as a service to IHS members and visitors to the website. Please be aware that IHS does not recommend products or services. While we know of no serious problems having arisen from messages posted here, we are not able to verify that offers posted here are legitimate or that individuals responding to the offers are sincere. Accordingly, caution should be exercised in initiating and conducting business as a result of messages posted here to ensure your personal safety and the safety of your financial account information..

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Grumman Runabout -1958 Museum Piece

[20 Aug 02, updated 01 Oct 03] For Sale: Sea Wing Hydrofoil-Grumman 1958 14’8″. New Mercury 40 HP, Trailer, Original 35 HP Evenrude Lark (stuck), Morse Controls. Runs great. I am in Georgia USA. Can deliver in Southeast USA. $15,500.00. — Myrel Harner (ireneharner@juno.com)

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Kolkhida Hydrofoil For Sale – DELFIN 1

[22 Sep 03] We have for sale a seagoing hydrofoil with capacity of 124 passengers. Click Here for Technical Specifications and full set of color photos, and details of the offer (Adobe Acrobat file, 400K). Price: 270.000 Euro FOB Kolobrzeg — Miroslaw Balicki, Kolobrzeg Passengers Shipping Company (kzp@pro.onet.pl)

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New METEORS For Sale (Two)

[14 Jul 03] Zelenodolsk Shipyard, Russia announces that two (2) METEOR hydrofoils in production are for sale. Projected date of delivery is April 2004. Choice of Russian engines or Deutz (Germany) engines. Price ranges from 500 000 Euros to 950 000 Euros. Includes all certificates and our guarantee (1.5 year). — Sergey Nikonov (zdsip@nimb.ru)
KATRAN Hydrofoils For Sale

[12 Jul 03] We propose for sale from direct Owners following sea-going hydrofoils:

– Design “Katran” (“Kolkhida”), built by Volga Shipyard, Russia in 1996 (1995 2nd vessel);- The ship was built in compliance with the Rules and under the supervision of the Maritime Register of Shipping of Russia, class KM * 2 A3 Pass. Hydrofoil;- Reclassified by RINA, 100 – A -1.1; Nav S; TP;- USCG approval- Gross tonnage/Net tonnage: 135GT/53NT;- Engines: two MTU-made 12 V 396 TE 74 diesels, each of 1260 kW (1714 h.p.); 2nd vessel – two MTU-made 12 V 396 TC 82 diesels – each of 1050 kW (1430 h.p.);- Engines’ hours: less 3000– Passenger capacity – 140 (150 2nd vessel)Length, m 34,5Breadth, m 10,3Height above water (foil-borne), m 10,8Height above water (floating), m 8,9Floating draught, m 3,5Foil-borne draught, m 1,9Light displacement, t 56Full displacement, t 72Foil-borne sailing range, miles 200Foil-borne speed, kn 34Crew 5Both vessels are equipped with air-condition system.
Seaworthiness:
– The normal operating conditions for cruising foil-borne are sea state with waves up to 2 meters high and winds up to Force 5.
– The most unfavorable conditions for cruising hull-borne are sea state with wave height 3 meters and wind Force 6.

We recently inspected the hydrofoils and confirm that the vessels are well-maintained and are in tip-top condition. Inspectable in N.America by arrangement. Additional information is available upob firm/named interest. — Brgds/Vyacheslav Fyodorov ; Cielo Trading Ltd ; Tel: +38 048 743 80 85 ; Fax: +44 870 125 34 00 (via UK) ; Email: (slava@cielo-trading.net )

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A Gas Turbine Engine For Your PHM

[2 Jun 03] GTE For Sale: proposed as suitable to replace the LM2500 in a surplus PHM or a commercial vessel requiring this kind of power: 20,000 HP. Built by Mashproekt in Ukraine; No operating time accumulated; Model designation D59 (original USSR designation for same model, only with a reversing mechanism: GT16000); Maximum continuous rating (MCR) – 20,000 hp in ISO conditions; Power turbine rated speed : 5200 rpm (A 3000 RPM power section is available from Russia for only $128,000 and it includes exhaust plenum and driveshaft ready to couple up to the PHM gearbox); Direction of rotation: counter-clockwise (looking at the output shaft flange), non-reversible (reversing mechanism not needed to power a water jet) ; Fuel control system operation: stabilized fuel flow rate; MTBO – 10 000 hr: (100% MCR – 300 hr, 80% MCR – 900 hr, 70% MCR and less -10 000 hr). If engine load never exceeds 70% MCR, MTBO can be extended to 20 000 hr.; Total life time – 60 000 hr. Stored in Michigan USA; Asking US$500,000 with 2 water jet drives. I would like to be put in touch with some boat builders around the Mediterranean area who might be interested. — E J Potter email: (potterej@earthlink.net); phone: 1-561-468-3587.

53-Page Technical Manual(Adobe Acrobat File – 612 kb)

Click Here

.[7 Nov 02] Looking for a good home for the H/V ALBATROSS. Hull and cabin are in good condition. However, she’s missing foils, strut, shaft, rudder, and engine. Anyone knowing of a museum, school, conservator, etc. interested in having it donated to them, please let me know. — Robert Miller cbbi@aol.com

Response…

[7 Nov 02] For historical and other information and photos about Bob Miller’s conversion of the ALBATROSS to a houseboat, Click Here. For historical information and photos about the ALBATROSS in its prime, see the Helmut Kock biography on this site.

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Seahawk Ltd. Offers Olympias
[21 Oct 03] Two OLYMPIA type hydrofoil vessels for sale. Both in top condition. Hydrofoil passenger vessel. Built in Russia 1993 & 1994. Hull : alloy. L – 37.54, B – 8.40, Depth – 2.60, Draught 4.60/1.40, GRT – 298 T, NET – 89 T, DW – 82 T, Main engine – MTU 16V 396 T E 74 / 2×2000. Classification : Det Norske Veritas. Renovations : Both vessels are seriously renovated. Last serious renovation : 2000. Sale price US 1.5 MIO each. Location : Trading between Finland and Estonia
Seahawk Ltd. Offers Superfoil Ferry

[30 Sep 02, updated 21 Oct 03] Directly from the Owners can offer for sale the following air conditioned Superfoil passenger ferry. Main particulars: Built at : Almaz Marine Yard JSC, St.Petersburg, Russia in 2002; LOA : 41 m, B : 12.4 m, Draught : fully loaded at speed / 1.2 m, at rest with retracted foils / 1.7 m, at rest with foils in operational position / 3.4 m; Passenger capacity : 286; Main engines : MJP Waterjets (Mercedes) Type 4000 M70 / 4 x 1740 kW MCR / each 1900-2000 RPM / easy and quick dismantling of main and aux. engines; Gensets : TechnoScan TS90 / 2 x 70kW / 87 KV*A; Gearboxes : Four reversing flange-mounted ZF 4650 / electrically operated; Service speed at sea State 3 : 55 knots; Range (34t DW; 55 kn. speed ; 10% margin) 200 nautical miles; Seakeeping : 2.5 sign. wave height at 100% MCR; Foils : Two fully retractable hydraulically controlled forward fully submerged foils made of high-quality titanium alloy; Interceptors : Two hydraulically controlled transom interceptors made of high-quality titanium alloy; Foil & interceptors control system : MTD / AURORA active Foil & Interceptor; Control System. FICS-3 supplied; Rudders : Two hydraulically controlled suspended rudders made of high-quality titanium alloy providing great control improvement; Classification : DNV 1A1 HSLC R3 Passenger E0, IMO HSC Code, Category A; Accommodation : 62 passenger seats in business class with 1000 mm pitch, 224 passenger seats in tourist class with 900 mm pitch, Self-service bar in business class, Large kiosk/bar, 21 sq.m duty free shop, audio/video entertainment system; Deadweight: 34.000 kg.; Crew : 12×75 kg / 900 kg.; Luggage : 286 x 10 kg / 2860 kg.; Fuel oil : 4740 kg.; Fresh water : 1000 kg.; Duty free goods : 3.050 kg; Capacities : Fuel oil : 10.000 L. Fresh water : 2000 kg. Hydraulic oil : 200 L. Lube oil : 250 L. Waste oil : 250 L; Hull / superstructure : High quality marine grade aluminum alloy type 1561; Service life : 20 years; Environmentally friendly : Extremely low wash up to max speed, low noise. Fulfills IMO emission regulations of Year 2000. Sale price : USD 7.0 MIO; Location : Europe. — Y.Eero, Managing Director, Seahawk Ltd. (seahawk@estpak.ee)
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TUCUMCARI Model Kits
[23 Sep 03] For hydrofoilers in the USA: The History Channel will feature a high-flying segment about US Navy hydrofoils within its blockbuster MAIL CALL television series on Sunday night, October 5th, at 10 pm EDT/PDT and 9 pm CDT. This segment reportedly includes some never-before-seen archival footage taken in 1968 of the first fleet hydrofoil, TUCUMCARI, as well as a recent interview with her first Skipper (and IHS-member), Martinn Mandles. The International Hydrofoil Society is credited by the producers, and our IHS website is listed for viewers who would like to learn more about hydrofoils. The colorful host of MAIL CALL is a former Marine Corps drill instructor (and award-winning actor), R. Lee Ermey. This episode of MAIL CALL is a “must-watch” for all members and friends of the IHS! — Martinn H. Mandles (mhmandles@aol.com)

[15 Mar 02] Beginning in 1952, the U.S. Navy sponsored a research & development program to construct & evaluate a number of hydrofoil test-craft. As a result of this program, in April 1966, the Navy’s Bureau of Ships awarded contracts for two competing hydrofoil gunboats, the PGH-1 to the Grumman Corporation, and the PGH-2 to the Boeing Company. The contract to Boeing was for a fixed price of $4m. By July of 1967 the hull was completed in Portland, Oregon and transported to one of Boeing’s plants in Seattle, Washington for completion and outfitting. At the launching, PGH-2 was christened TUCUMCARI in honor of the City of Tucumcari, New Mexico. Upon completion of builders & acceptance trials, she was delivered to the Navy on March 8, 1968.

TUCUMCARI was powered by a Rolls Royce Proteus gas turbine driving a water-jet propulsion system that gave this 57-ton hydrofoil a speed in excess of 40 knots. She was 72 feet in length with a beam of 19.5 feet, and a draft of 4.5 feet with foils retracted and 13.9 feet with foils extended. The Navy crew consisted of one officer and 12 enlisted personnel.

On November 9, 1969, to evaluate these craft in a wartime environment, TUCUMCARI was deployed to Vietnam along with FLAGSTAFF (PGH-1) for river patrol operations out of Danang in Operation Market Time.

Following her tour in Vietnam, TUCUMCARI was loaded on USS WOOD COUNTY and transported to Europe for a NATO tour and demonstrations. From April until October 1971 she operated in European waters while performing numerous demonstrations and participations in combat exercises.

Upon her return from Europe she was assigned to the Amphibious Force in the U.S. Atlantic Fleet. This resulted in a sad ending to a distinguished period of performance. In November 1972, during night operations off Vieques Island, Puerto Rico, she ran onto a large submerged coral reef. Fortunately, there were no serious injuries to the crew. She was finally dragged off the reef in a difficult salvage operation and transported to Norfolk, VA where the decision was made not to attempt repair of the extensive damage. During her short life, however, TUCUMCARI adequately demonstrated the value of this water-jet propelled design as a new naval combatant with very high maneuverability and the capability of very high speed even in very rough seas. She and the other Navy R&D ships and craft served to lay a solid technology foundation for the design and construction of a squadron of six Navy Patrol Hydrofoil Missile (PHM) ships built by Boeing. They were deployed to Key West, FL where they worked with the US Coast Guard in apprehending drug smugglers and conducting search and rescue operations. — Wm. M. Ellsworth, P.E.

[4 May 01] Do you know what scale is this Aurora made TUCUMCARI boat? — (vsokolov@et.ru)

Response…[4 May 01] Based on the 71 feet length of the TUCUMCARI and the approximate 10 inches for the model, I calculate the scale to be 1/85. — Sumi Arima (arimas1@juno.com)

[5 May 00] My number four son has located 2 Monarch USS TUCUMCARI (PGH-2) models in Virginia They sell for $125 and $160. If anyone is interested give me an e-mail and I will get ordering info. They are not too bad. I had two of them when I was still with Boeing. Several years ago now. They cost at that time $5. — John Monk (marymonk@msn.com)

Response...[23 Sep 03] These model kits go up for auction on www.ebay.com fairly regularly… most that I have seen have sold for well under $100. For eBay members there is an automatic search feature under “favorites” in the “My eBay” section. This allows you to specify a keyword search with the option to receive email notification when new items are added that meet the search terms.

[11 Sep 98] In 1967 at age 27, I became the first officer-in-charge of the U.S. Navy’s first fleet-operational hydrofoil, the Boeing-built TUCUMCARI (PGH-2). I bid and won an ebay auction for a brand new, original TUCUMCARI model made by Aurora Plastics and still in the box. Believe it or not, my name appears on the background/instruction page. I built one and kept one of these models at the time, but they were damaged or lost in the interim, and I had given up hope of ever finding another. So the IHS referral to ebay really paid off for me (and for the seller)! — Martinn H. Mandles (mhmandles@aol.com)

[14 Feb 99] A good potential source of the TUCUMCARI kits is the online auction at Ebay. I have seen half a dozen kits sold there in the last few months; most recently the selling price has been US$28.00 to $US32.00. Just log on and search for the key word TUCUMCARI. Eventually you are likely to find one. Another model kit that sold recently on Ebay was a radio controlled PT 50 manufactured in Japan in the 1980s. — Barney C. Black (Please reply via the BBS)

[4 May 98] I am trying to get some information for a friend of mine, who builds model for a hobby.  He is trying to get some specific information about the TUCUMCARI hydrofoil.  If you can direct me in the right direction it will be greatly appreciated. — BM1(SW) E.W. Enzenauer (eenzenauer@acu4.lck.mrms.navy.mil)

Response…[19 Apr 98] Photos of a completed TUCUMCARI Model Kit are now included in the IHS photo gallery, courtesy of IHS member Malin Dixon.

[20 Jan 98] I have a friend who has [another] model kit of the TUCUMCARI he would like to sell. He’s asking $75 for the kit, which is unbuilt. Please let me know if you are interested ASAP. — Bill Faulkner(WFaulk0001@aol.com)

[28 Oct 97] Hope you can help me find some info on the Boeing PGH-2 Hydrofoil TUCUMCARI. I have a model of this boat that I would like to build as accurately as possible to the real thing while it was stationed in the Far East. All I have to go on is the box art of the kit. The Model was made by a company called Aurora. The box is dated 1969, kit #727-250. The bad part is that Aurora is out of business, and the kits have become collector items (you don’t want to know what they go for). It is no small bit of luck that I came to have one. The kit is titled “Boeing PGH-2 TUCUMCARI Hydrofoil.” There is a sticker that says ” Designed by Boeing Aerospace Group” on the box top. I checked the Boeing web page and found two references; the first is of a Naval Hydrofoil w/ missile launchers, the other was of a hydrofoil ferry. My desire is to do the most accurate job possible in the construction of this kit. These kits can sell for over $100, so I’m going to be real careful when I build it. So research will be very important. Unlikely but possible, there is a model company called Glencoe, that is digging up the molds from long discontinued models and reissuing them. On the Ship side the Savanna and the USS AMERICA have been reissued, so who knows maybe they’ll do the TUCUMCARI someday. If they ever do, I’ll let you know. When I finish the model I’ll send some photos your way. — Bill Faulkner(WFaulk0001@aol.com)

Response…[30 Oct 97] Here’s a TUCUMCARI photo I just scanned. Hope it comes out o.k. It’s the only thing I have here at work. I’ll check my stash at home. — Joe Schobert (Dirigo99@aol.com)

Response…

[31 Oct 97] The TUCUMCARI kit was put out by Aurora Plastics Corp. as kit no. 727-250 based on data provided by Boeing. This was back in 1969. I do not believe they are in production anymore. Boeing was working with one of those kit manufacturer on putting out one for PHMs. I don’t believe they ever did put it out, at least I have not seen any. I am not quite sure what kind of data is desired, but TUCUMCARI and FLAGSTAFF particulars and plan and elevation views are provided in “Boats of the USN”, Navships 250-452 issued May 1967 and was available through Superintendent of Documents, US Government Printing Office. The booklet of general plans is PGH2-845-2533352. I know the set of drawings originally held by SUPSHIP Seattle has been destroyed by the Archive people. I thought I had a booklet put together by Boeing providing general details of TUCUMCARI but am unable to locate it. There might be one hanging around at the Naval Surface Warfare Center – Carderock Division facilities. – Sumi Arima (arimas1@juno.com)


Boeing PHM and Jetfoil Models
[5 Jan 99] I am looking a model or a model kit of the PHM-1 Class of ships. If you know of any I would appreciate the help in this matter. — Michael Brint (brint@maco.net)

Four Responses…[13 Jan 02, updated 30 Dec 02] White Ensign Models (WEM) offers a new 1:350 scale model kit for PHM 1 USS PEGASUS, and it’s a beauty. Click Here for details/photo. The company ships orders worldwide. Felix Bustelo has created a webpage devoted to this model with photos, hints, and reviewer comments. That page is at http://warship.simplenet.com/wem_pegasus.htm. [regrettably, Felix Bustelo’s site seems to have disappeared from the web. – Editor] Thanks to Steve Novell (steve.novell@av.com) for bringing this item to our attention. He notes that “The model thing is close enough that you can make just minor adjustments (adding H bits to the main deck, relocating the radar to the mast etc.)”

[6 Jan 99] I have heard of a PHM model, but I have no idea what makes or made it. There probably weren’t that many made. By the way… I’m not at Boeing any more. This is my sixth day of retirement! — Joe Schobert (DIRIGO99@aol.com)

[6 Jan 99] I don’t recall a PHM Model, but there was a (primitive) video game in the ’80’s called “PHM” or “Hydrofoil” that used the characteristics of the ships. Boeing provided technical assistance to the manufacturer, as I recall. — George Jenkins (georgejj@aol.com) (editor’s note: this copies of this video game are offered for sale occasionally on the Ebay Auction website.)

[8 Jan 99, updated 8 Aug 99] There is a plastic model kit combination of the USS Missile Frigate FFG43 USS THACH and USS Patrol Missile Hydrofoil PHM1 PEGASUS Class to a scale of 1:700 in the “Sky Wave” series produced by Pit-Road, 5-10-3 Kajigaya Takatuku, Kawasaki City, Japan. The kit number is 55 and the box is also labeled SW-1300. The FFG is only modeled down to the waterline and is about 195 mm long. The PHM can be modeled either hullborne or foilborne as there is a split in the hull at the waterline. The down side is that the PHM model is only about 59 mm long. It is fairly cute through and has reasonable detail! The decals include pendant numbers for PHM-4 through PHM-6, AQUILA, ARIES, and GEMINI. Although you appear to be looking for plastic scale model kits, I am also reminded of an article on a radio controlled semi-scale PHM model included in a Dutch radio control modeling magazine on sale in December 1995 in the Netherlands. This model was scratch built rather than a kit, but may be of interest to you if you can still trace the article from the scant description I have given. Finally, you may also be interested to know that in the UK magazine Model Boats of April 1991 (Volume 41 Number 482) featured a small advertisement for ‘Hydroflight Models, model hydrofoil and hovercraft specialists incorporating the Hydroflight Society (The Society for Model Hydrofoil and Hovercraft Enthusiasts)’. The advertisement announced that their first kit, a 48 inch model of HMS SPEEDY, a military derivative of the Boeing Jetfoil was to be released soon and included photos of the bare hull of this scale fibreglass model. The advertisement had this UK address: Hydroflight Models; Unit 4, Readers Farm; Readers Lane, Iden, Nr. Rye, East Sussex; Telephone: 0797 222406 — Martin Grimm (seaflite@alphalink.com.au)

[20 Feb 99] There was a 1/700 scale plastic model kit combination of the US Navy guided missile cruiser Vella Gulf, CG 72 that also included scale models of a Harpoon-armed Pegasus class hydrofoil, an LCAC (hovercraft landing craft), and some smaller boats. Don’t have any other details. — Barney C. Black (Please reply via the BBS)

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Other Models

High Quality Display and Test Models

[17 Apr 03] We offer a professional modelmaking facility, tailored to suit individual requirements of our clients, which include shipbuilders, ship owners, museums, oil companies, and private collectors. Our marine modelmaking service provides exhibition standard models for marketing and boardroom, engine room and internal layout models, wind and wave test models for design, and interference models for feasibility study. Ship models can be either full hull type, mounted on turned pedestals, or waterline type set in a realistic sea. Ship model hulls can be authentically planked on scale frames, solid (bread & butter) using English Lime, or GRP and resin when multiples are ordered. Email: dsmodelmakers@aol.com ; website: www.dsmodelmakers.co.uk.

PT-50 Final

[15 Mar 02] It’s finished. Here’s a few shots. I’ve sent off an article to Classic Fast Ferries (also will be published in the club modeling magazine). Here’s a few shots of the finished model. I did end up putting a 1/2 dozen commuters on the back verandah – you can see the rest of the detail. Thanks for your help and interest on the way thru. And to IHS and CFF generally for the additional history and reference material. — Ian Wrenford (iansharyn@bigpond.com)

Update on PT-50 Model Progress

[13 Jan 02] A further progress report on the PT50 FAIRLIGHT model. Couple more photos attached. I’ve now painted the basic hull (except for the black bits) and completed the foils. The lower deck windows were originally fitted as clear plastic sheet, the window positions then being masked over and paint applied to the remaining exposed clear plastic. Remove the masking and voila, nice clear windows. The main superstructure is also largely done and now I’m pretty much ready to start the detailing – rails, life rings, ventilators, antenna etc etc. In the photos – the foils are just bluetacked into position and the upper deck, roof and main antenna are just glued on with gravity. The deck itself has a bit of red overspray on it and no attempt has been made to paint that yet. On the base, I’ve made some modifications to the wake pattern to fit those shown in the Dee Why shot (thanks Barney/Martin for the tip). Not finished with the base yet, I have to get the model into exactly the right position before getting into it with the artists acrylics – but I’m much happier with the effect. Early to mid-Feb for completion remains my estimate. –Ian Wrenford (iansharyn@bigpond.com)

[30 Dec 01] Just touching base again on the PT50 scratchbuild. I’ve settled on the FAIRLIGHT and am doing it in a (static) 1:72 scale. It will be for static display only. Here are a couple of shots of the model in progress. I will be mounting it foilborne on some modeled water, which you can see in one of the photos. I have made good progress with the basic hull (ex foils) now complete and have just commenced on the superstructure. I predict I’ll have it finished by end Jan or beginning Feb 02. And I’m using plans Martin Grimm sent me (although have had to re-draw the superstructure to match the oz ones). A query: Is there any info on the deck finish on the Oz PT-50s? I’m not clear if they would have been wood, or a painted finish. — Ian Wrenford (iansharyn@bigpond.com)

30 Dec 01

30 Dec 01

13 Jan 02

13 Jan 02
Response…

[30 Dec 01] The decks of the PT 50s, like the rest of the hull and the superstructure are fabricated from aluminum alloy which is riveted together. The foils, due to the need for strength are steel as are deck fittings such as bollards (stainless), hand rails etc. The Sydney foils has a rough anti-slip coating applied to the decks and this had a light matt grey finish (see aerial shot of DEE WHY or close-up of forward deck of LONG REEF below). The only significant external wood items were aft cabin doors and bench seat (as seen on CURL CURL photo). Given you will probably soon be starting on the foils, I take the opportunity to send you views of the bow and stern foil units of LONG REEF while on cradles at Balmain in the late 1980s. It is only when a hydrofoil is out of the water that it is possible to really appreciate the foil configuration. On the bow foils you should be able to see flaps on port and starboard side. Also, the thin strakes on the foils are called ‘fences’ and they help to stop air from being drawn down on the low pressure side of the foil. Likewise the pair of rudders on the aft foils (slightly inboard of the propeller shafts) each have four fences clearly visible with a further fence placed on the foils below each strut connection point. The rudder tiller assembly is visible just above the aft foil supporting cross structure which is bolted to the transom. If you need any other details or views to clarify any aspect of these hydrofoils during construction of the model, let me know and I may be able to find a photo that helps. — Martin Grimm (seaflite@alphalink.com.au)

(Above, Left, and Below). Thanks to Martin Grimm for providing various views of PT-50 hydrofoils to assist in modeling from scratch. Additional views, both of models and the real vessels can be found in our photo gallery and in the sections of the site devoted to radio controlled models and static display models.

Need PT-50 Plans for Model

[16 Oct 01] I live in Sydney and in my childhood we had PT50 Hydrofoils operating in Sydney Harbour. I was interested in scratchbuilding a (static) model of one and was wondering if you had any thoughts on possible sources for scale plans. — Ian Wrenford (iansharyn@bigpond.com)

Responses…[30 Dec 01] Note that Ian Wrenford’s many impressive models are on static display at the website of the Australian Plastic Modelers Association, see specifically the following page: http://apma.org.au/membersmodels/ian_wrenford/wrenford.html. — Barney C. Black (Please reply via the BBS)

[20 Oct 01, updated 6 Oct 03] I have a model PT.50. You can see it and other hydrofoil models at: http://home.wanadoo.nl/~hydrofoils1/dutchhydrofoilmodels.htm. — Mark van Rijzen (info@dutchhydrofoils.com) website: www.dutchhydrofoils.com.

[20 Oct 01] The radio controlled model I have (still unfinished and probably never will be at the rate I am going) is of a Rodriquez RHS 140 rather than the Supramar / Rodriquez PT 50. The RHS 140 was essentially a somewhat modernised version of the PT 50. It is a fairly similar size with similar passenger capacity and engines, but had a slightly different hull and superstructure. My model represents CURL CURL which you may still recall. CURL CURL was the only RHS 140 that was operated on Sydney Harbour. Most of the other Sydney hydrofoils were of the PT 50 type you mentioned, though the first one MANLY was a smaller PT 20, and the last two that were introduced, the MANLY [2] and SYDNEY were both larger Rodriquez RHS 160F types. More information on the Sydney hydrofoils is provided in issue 5 of Classic Fast Ferries by Tim Timoleon at http://www.classicfastferries.com. I built my 1:20 scale CURL CURL model from plans I drew up (also to a scale of 1:20) from a combination of arrangement drawings in journals and my own set of photos of that hydrofoil. Those plans are also not complete, but were enough to be able to build the model from. The question now is, do you want to specifically build a PT 50 model or would the RHS 140 also be suitable? Also, how accurate do you want to make your model? I don’t have accurate drawings of either the PT 50 or RHS 140 from which to build a model, but Click Here for the principal characteristics and general arrangement (this is a 1.3 meg Adobe Acrobat File). See also Jane’s Surface Skimmer Systems 1967-68, which shows some section views through the PT 50. Note that the PT 50 hydrofoils that operated on Sydney Harbour also had various superstructure configurations. Some, like DEE WHY, had a raised wheelhouse top, and others like FAIRLIGHT and LONG REEF had the wheelhouse at the same level as the rest of the superstructure. The PT 50 plans I provided here are of an older style of superstructure with less internal passenger capacity than those operated on Sydney harbour. I can send you a selection of scanned photos of mainly either CURL CURL or LONG REEF once you indicate whether you have a preference for building any particular one of the Sydney hydrofoils. I assume you would be building the model to around 1:72 scale? I look forward to hearing more about your plans to build the model. In particular, once you do build such a model, make sure to send a photo of it to the IHS. There is a page on the IHS website under the photo gallery where photos of various hydrofoil models are included. Two other modellers in Australia have built PT 50 models, but neither are complete as far as I am aware. They are larger scale models made of wood and one is radio controlled. They were built from plans provided by Rodriquez but I was told that the plans may have in fact been for a mix of PT 50 and RHS 140 types, so that made it a bit confusing to build the models. — Martin Grimm (seaflite@alphalink.com.au)

[9 Dec 01] I am attaching some photos and a postcard image of the Sydney PT 50s. They include: (1) An old postcard featuring FAIRLIGHT sent to me by Andrew Gowanlock, a fellow hydrofoil buff in Sydney. The card by the Kruger company of West Germany and numbered 797/61 is titled “Sydney Hydrofoil Ferry with Kirribilli in background”. It seems like a composite photo to me! Click Here for close-up of FAIRLIGHT. (2). A photo taken by Andrew Gowanlock showing FAIRLIGHT in the foreground and PALM BEACH and DEE WHY (the latter two with raise wheelhouse) in the background after they were withdrawn from service; and (3). A photo of LONG REEF of which I have a selection of other photos while it was in maintenance. LONG REEF and FAIRLIGHT had a very similar appearance. — Martin Grimm (seaflite@alphalink.com.au)

Chinese Military Hydrofoil Info Needed For Model

[31 Jul 01] As a hobby I make 1/700 plastic models of warships from various countries, and I am interested in hydrofoils of the modern Chinese Navy. Does anyone know of a book or website that has pictures of these warships? I have researched various internet search engines to no avail. — Chris King (chris_a_king@hotmail.com)

Response…[31 Jul 01] You can get some information from an old copy of Jane’s Surface Skimmers, say between 1979 and 1984, but not enough to make a model from. There were over a hundred hydrofoil torpedo boats of the Hu Chwan (White Swan) class active in that era, all built in Hutans Shipyard. Also, some were sold to Albania, Pakistan, Tanzania, and Romania. According to Jane’s, about 20 hulls of this design slightly modified were built in Romania. There was also a Hema class military hydrofoil about which I have no details. It may be worth the effort to inquire of the Naval Attaché at the embassies of the various countries involved to see if they would provide any info… it’s a small chance, but you have nothing to lose but the cost of the stamps.– Barney C. Black (Please reply via the BBS)

Need FLYING FISH Design Details for Model

[18 Feb 01] I’m searching for further information — plans, etc., on the FLYING FISH for a model I plan to build. FLYING FISH was outfitted at Miami Shipbuilding Corp. for her role as the DISCO VOLANTE. In the limited edition DVD of the movie Thunderball, there is a section on the “Making of Thunderball” that has a scanned photo (b+w) of the FLYING FISH in the MSC yards.– Doug Binish (email address withheld)

Plans For BRAS d’OR

[19 Feb 99] Do you know where I can get a set of plans of the BRAS d’OR?. I would like to build a model of her. Growing up in Nova Scotia, I got to see her in action. Quite a sight. — Ron Schofield (sco@hfx.andara.com).

Response…

[19 Feb 99] Click here for present location of the Fast Hydrofoil Escort BRAS d’OR. Maybe the museum has the plans. — Barney C. Black (Please reply via the BBS)

FHE-400 BRAS D’OR Dimensions for Model

[8 Sep 00] Can you tell me where I can find “dimensional drawings” for the Canadian FHE-400 hydrofoil destroyer ? I wish to make a 40″ model of her that actually flies ( yes I have the technical ability). The only thing I have found is the book “The Flying 400” by Thomas G. Lynch. — The book gives the length as 151 Feet but no usable drawings — Dan MacLean (dmaclean@quik.com)

Responses…[13 Oct 00] The ship itself is on display, and there is a small museum associated with it. Good luck with your model, and by all means send some photos and details when you are done for possible publication in the IHS newsletter. There was also a scale model of the FHE400 on display at the Maritime Museum of the Atlantic in Halifax, Nova Scotia some years ago. I have uploaded a couple of scans of figures taken from old technical papers. Click Here and Click Here. You may need to use the View/Zoom feature on your browser or Paint program to read the dimensions on these, but they can be read. – Barney C. Black (Please reply via the BBS)

[20 Jan 03] Did you ever receive a response on your question as to drawings on the Bras D’Or? My father was the Principal Naval Overseer who laid her down…he suggests contacting the Hull Drawing Office who was the successor to the Naval Central Drawing Office. — Anne Lynch (aelynch@shaw.ca)

[08 Aug 03] I have been building model Canadian warships for twenty years, and it was suggested that the Bras d’ Or would make an interesting model. Are plans available for her? — George E. Onley (ggonley@onlinl.net)


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BOEING’s “AQUA-JET” HYDROFOIL RESEARCH HYDROPLANE

(ALSO KNOWN AS THE “HTS” HYDRODYNAMIC TEST SYSTEM)

From 1961-1966, the Boeing owned and operated Aqua-Jet provided a continuous “water tunnel” between its sponsons in which to measure the hydrodynamic parameters of many small, scale model hydrofoil “wings” of different designs at various angles of attack, depths and speeds. The instrumentation was such that a complete “polar” plot (of lift and drag versus angle of attack at any one foil depth and speed) could be obtained in a run time of only 30 seconds!

Except for the unique sponson configuration and pure turbojet propulsion, HTS resembled the American Power Boat Association’s “Unlimited Class” racing hydroplanes of that era. HTS was 38 feet long, with a beam of 17 feet. Initially powered by an Allison J-33 turbojet with 4,600 lbs. of thrust, the brown-and-white HTS then displaced about six tons and was capable of speeds of up to 100 knots (115 mph). In 1963, after major modifications to the hull and the installation of a Pratt & Whitney J-48 turbojet with 6,350 lbs. of thrust, the blue-and-white HTS displaced closer to eight tons with a top speed of 130 knots (150 mph).

Operating on Lake Washington in Seattle only on calm water and during daylight hours, HTS proved to be indispensable in adding to the knowledge of hydrofoil design and performance at that time and in the years that followed.

(Rev. 110418 MM)

c
(10k)
d
FRESH-1 – The purpose of the 53-foot, 16.7 ton Foil Research Experimental Supercavitating Hydrofoil, designed and built by Boeing for the US Navy in the 1962-63 time frame was to evaluate a variety of foil designs and foil system arrangements at high speed. The twin-hull catamaran arrangement provided a large clear space between the hulls, within which different foil systems could be mounted. There was complete freedom for the arrangement and location of foils relative to each other. FRESH-1 capsized at 70 knots during a high speed Acceptance Trial on 18 July 1963. The incident strongly influenced the US Navy’s decision to abandon its goal of a 100-knot hydrofoil and concentrate instead on achieving reliable 50 knot operations.
LITTLE SQUIRT
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Ship Yards

Disclosure: IHS President Ray Vellinga is part owner of Gig Harbor Marina and Boat Yard.  For more on Gig Harbor Marina and Boat Yard click on Home, below:

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International Hydrofoil Society Correspondence Archives…

Sources of Engines, Their Maintenance, and Repair Parts
(Last Update: December 20, 2013)Go to the BBS Bulletin Board
Go to the Directory of Archived Messages

 


Correspondence

Diesel Engineering Text

[30 Mar 11] Author: Andrei Makartchouk
Title: Diesel Engine Engineering 2: Thermodynamics, Turbocharging, Dynamics,
Design, Control
ISBN: 0984634606
Available on Amazon.com

This book is a revised and extended edition of my previous book below, and provides the foundation for design of diesel engines based on traditional methods in
thermodynamics, dynamics, structural analysis, chemistry, heat transfer, applied analysis of system operation, and etc. This edition offers an additional material and examples for calculation of combustion process, thermal efficiency, heat release, NOx emissions, and etc. A diesel turbocharging is included into this edition also.

Providing detailed strategies to analyze, control, and design diesel engines, their systems, and major components, this text can be used as a manual for calculation of diesel engine thermodynamics and dynamics, design of turbocharging, evaluation of structural mechanisms, and modeling of diesel engine systems for optimal performance, efficiency, and maintenance in marine, industrial, automotive and genset applications.

Thank you, Andrei

 

A Gas Turbine Engine For Your PHM

[2 Jun 03] GTE For Sale: proposed as suitable to replace the LM2500 in a surplus PHM or a commercial vessel requiring this kind of power: 20,000 HP. Built by Mashproekt in Ukraine; No operating time accumulated; Model designation D59 (original USSR designation for same model, only with a reversing mechanism: GT16000); Maximum continuous rating (MCR) – 20,000 hp in ISO conditions; Power turbine rated speed : 5200 rpm (A 3000 RPM power section is available from Russia for only $128,000 and it includes exhaust plenum and driveshaft ready to couple up to the PHM gearbox); Direction of rotation: counter-clockwise (looking at the output shaft flange), non-reversible (reversing mechanism not needed to power a water jet) ; Fuel control system operation: stabilized fuel flow rate; MTBO – 10 000 hr: (100% MCR – 300 hr, 80% MCR – 900 hr, 70% MCR and less -10 000 hr). If engine load never exceeds 70% MCR, MTBO can be extended to 20 000 hr.; Total life time – 60 000 hr. Stored in Michigan USA; Asking US$500,000  with 2 water jet drives. I would like to be put in touch with some boat builders around the Mediterranean area who might be interested. — E J Potter email: (potterej@earthlink.net); phone: 1-561-468-3587.

53-Page Technical Manual(Adobe Acrobat File – 612 kb)
Click Here

 

Kart Engine Utility

[11 Nov 01] I am considering building a hydrofoil as a university project and I’ve already been looking into some of the practicalities. Today I have mostly been considering how to power a small hydrofoil and looking at lots of engine and propeller websites. One option I’ve been looking at is the widespread availability of Kart engines. Do you think a 28HP Kart engine could be geared down to provide propulsion for a lightweight hydrofoil say 12-15ft in length? It just got me thinking because kart engines are very lightweight and also surprisingly cheap. — Mark Landers (mark.landers@baesystems.com)

LITTLE SQUIRT‘s Gas Turbine Engine

[20 Oct 01] In the article on Boeing’s LITTLE SQUIRT it mentions Boeing 425 hp gas turbine engine. Do you know any more about this engine or who might. Are these available or something comparable? — Matt Kirk (matric39@gte.net)

Response…[21 Oct 01] Boeing built the small gas turbine for about 20 years primarily for the air start carts used to start jet engines at the airports. I believe some may have been used as Auxiliary Power Units (APUs) as well. The jet planes have the APU usually near the tail to provide hydraulics, electricity, and starting air so they can be independent of ground services. Due to the age, I don’t know if they are still in service. Other gas turbines of this horsepower range that I am aware of were built by Solar (I believe the parent organization was International Harvester) and Airesearch. I know Aireasearch was bought out by Garrett who was bought but again, but I don’t remember the name of the current owner. Current versions of the gas turbines in this category are about half the size of the previous units. — Sumi Arima (arimas1@juno.com)

[26 Feb 03] Boeing made these engines: T50BO-12 also T50BO-10, T50BO-8. I have a few of them and have used them in my boat. — Tim Pratt (timp%@compatiblecomputers.com)

Reactivating the Indonesian Jetfoil Fleet

[24 Jan 01, updated 17 Feb 01] Would you advise who know the Standard Test for Fuel Nozzle of Allison 501 KF Gas Turbine Engine used on Boeing Jetfoil 929 type? There are five Jetfoils in our country, Indonesia. One is a commercial type with around 225-passenger seats. This vessel has been in use for several years, and the 2 501 engines are burned out. There are Allison documents with the ship, but I can’t get the answer to my question from them. Two of the other Jetfoils are troop transport type with around 100 passengers on first deck. We plan to operate one of these at Surabaya-Indonesia as a chartered vessel for plant or offshore services. Another two Jetfoils are patrol type unfinished yet. The two patrol type units are hull (one deck) with engine and Automatic Control System (ACS) only. They have never been used since they arrived in our country in the beginning of the 1980s. We have planned to modify Patrol type to be a Commercial type. Do you have any idea how much the approximate cost for this project? Do you know who has the surplus of Allison 501 KF engine; we need two units. — Sentot Adi Pramono, Operation Director at PT Indonusa Ocean (sentot@lycos.com); Jln. Dukuh Kupang XXI – 16 Surabaya, 60225; Indonesia. Phone: 62 81 133 6557; 62 31 567 2257; Fax: 62 31 561 2293

Response…[17 Feb 01] Allison was bought by Rolls Royce in 1995. There is a descriptive information about the Allison 501 engine on the Rolls Royce website (use the search feature to search for “Allison,” but no specific info on sales of new or reconditioned units or on maintenance procedures. They do offer parts and maintenance service in various countries, but you will have to contact them directly for specifics. The US Navy uses this engine, but I have no idea whether they have put any into surplus. — Barney C. Black (Please reply via the BBS)

Need Meteor Parts…

[18 Jul 00] I am hoping someone can tell me the contact numbers for the Zelenedolsk Ship yards who manufacture the Russian hydrofoil Meteor. — Hans Enri (hengermarine@hotmail.com)

Response…[18 Jul 00] The Zelenodolsk Shipyard has its own website.

Source of Engine Parts for Russian Hydrofoils

[5 May 00] My company, Comeract, Ltd is a source of spare parts of Russian engines, including engines in Russian hydrofoils like Kometa and in other Russian vessels of the type Alexander Green and Efpatoria. My fax is: 0030 241 22728; address is: 9 Mitropolitou Apostolou; Rodos-Greece — Mihail Hatziapostolou (comeractgr@hotmail.com)

Russian Source of Spare Parts

[1 Mar 00] I wanted to let you know that my company has successfully ordered new spare parts out of Russia. We have received our 1st shipment (5 propeller shafts and 1 V-drive). Also have we ordered 3 (new) front and 2 (new) aft foils. — Mark van Rijzen (dutchhydrofoils@wanadoo.nl)

Warbird Engine

[31 Dec 99] I am looking for information about the gas turbine engines made in the USA by Avco Lycoming that were used on the Grumman OV1 Mohawk airplanes. These engines are the turboprop version of the famous Huey helicopter engine. I am looking for a engine specification list, installation drawings, and an operations manual. If anybody out there knows how to get these documents, please contact me. You are probably wondering why I am asking: I have a idea that these engines will suit a Russian Voskhod hydrofoil perfectly as a main propulsion engine. The light weight and small dimensions will suit ideally for this application. I know that in the USA, Unlimited hydroplane race boats also use the bigger version T55 as main engine. — Peter Venema (venem107@wxs.nl)

Response…[31 Oct 98, updated 5 May 03] There is a web-based bulletin board for buying and selling aircraft and parts. Use the “Search Ads” function to look for ads with Mohawk as the key word.  — Barney C. Black (Please reply via the BBS)

2nd Response…

[7 Nov 99] Check out our website at www.ssturbine.com. We would love to supply technical information regarding LM-1500 and LM-2500 power plants, as well as potentially supplying engines. If there is any interest, please contact us. — Robin C. Sipe (rsipe@solarwinds.com)

Russian/Chinese Parts Sources

[30 Oct 97] I am looking for the manufacturer or maker of hydrofoil engines that is supposedly based in China. Originally the manufacturer of this particular model was from Russia. The vessel is a ferry. I am not sure of the manufacturer of the engines, but I know it is the same engine as used in the Chinese Navy. I also have the specs, (not with me at the moment) but it was like an M-104A model. — Rachel L. Haynie (Rachel@hol.gr)

Responses…[updated 24 Jul 98; originally 2 Nov 97] We use engines M401A and M417A on hydrofoils METEOR and VOSKHOD produced now in Russia. The producer of these engines is AO “ZVEZDA”: Russia, 193012, St. Petersburg, ul. Babushkina, 123; phone: +7-812-2620747, marketing department: +7-812-2628142, fax +7-812-2673776. — Konstantin Matveev (matveev@cco.caltech.edu) (website: www.hydrofoils.org)

[10 Nov 97] I contacted China State Shipbuilding Corporation (CSSC) that is the state owned enterprise and controls the most of shipbuilding industry in China, including shipbuilding, engines and ship equipments. Under CSSC there are a number of diesel factories for marine use. Among those, there are two factories manufacturing high speed diesel engines for high speed crafts and hydrofoils. They are Luoyang Diesel Factory and Sichuan Diesel Factory. Luoyang Diesel Factory is in Luoyang, Henan Province. It manufactures 12V180 diesel, 1200 HP and MWM diesel 400-1000 HP. They have the license of manufacturing MWM. Sichuan Diesel Factory is in Sichuan Province. They have the license to manufacture STYER diesel about 1000 HP. If you need detail information, please let me know the items. CSSC promised to offer the information. — Shi-Tang Dong, Professor in Ship Hydrodynamics (stdong@online.sh.cn)


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Hydrofoils — Joint Ventures Proposed to Operate, Manufacture/Market, or Design

Messages are posted here as a service to IHS members and visitors to the website. Please be aware that IHS does not recommend products or services. While we know of no serious problems having arisen from messages posted here, we are not able to verify that offers posted here are legitimate or that individuals responding to the offers are sincere. Accordingly, caution should be exercised in initiating and conducting business as a result of messages posted here to ensure your personal safety and the safety of your financial account information.

Joint Venture Sought in Fiji

[3 Jul 03] I am looking for a partner to lease me a high powered boat with the following 70~100 passengers and with speed of 30~35 Knots. The service is geared towards the ferrying of tourists between islands . Matt (matai@mrd.gov.fj)

Joint Venture Sought in the Philippines

{23 Jun 03] I intend to operate a hydrofoil to serve the transportation of passengers between the two main islands in the Philippines. I plan to enter into a joint venture/partnership with a vessel/hydrofoil owner wherein the operation, management and manning will come from my side. Some important details to consider: Passenger capacity: 120-150; Speed: 35-40 kts. I am currently operating two fast crafts serving the same place. — Felicito Datinguinoo (luchijane@aol.com)

Hydrofoils — Wanted To Buy or Lease

Messages are posted here as a service to IHS members and visitors to the website. Please be aware that IHS does not recommend products or services. While we know of no serious problems having arisen from messages posted here, we are not able to verify that offers posted here are legitimate or that individuals responding to the offers are sincere. Accordingly, caution should be exercised in initiating and conducting business as a result of messages posted here to ensure your personal safety and the safety of your financial account information.More info on how and where to buy/sell/restore specific categories of hydrofoils can be accessed from our Posted Messages Bulletin Board Page. Please notify the webmaster if you discover a notice that is no longer valid, or if you are unsuccessful in contacting the individual or organization that posted the message.

Fast Ferry Expert to Assist in Procurement of Fleet

[14 Oct 03] My company is looking for a fast ferry expert to assist in the procurement of a small fleet of catamarans or hydrofoil vessels. We will consider purchase, lease, or joint venture partnership. Vessels must carry up to 150 plus passengers and travel at a minimum speed of 35 kts. Please contact me if you are interested and want more information. — Tom Dempsey dempsuryy@aol.com

Historic Hydrofoil(s) Wanted in France

[9 Sep 03] I seek a few old, small Russian hydrofoils in any type of condition (Raketa, Polysie or Belarus hydrofoil). This is to make a houseboats here in Toulouse, the air and space center of France… a few people are interested in this. Also, and in addition to the houseboat project, I want to start a non-profit association to restore one medium or large Russian experimental hydrofoil (Sputnik, Chaika for example)… so I am looking for a good candidate to restore for historical purposes. The hydrofoil for non-profit restoration should be an experimental craft. — Jeff Legendre (a1493@hotmail.com)

Need High-Speed Ferry Boat in Indonesia / Borneo

[12 Jul 03] I am looking for someone to sell, lease or joint venture with me a high powered boat with the following 80~100 passengers and with speed of 30~35 Knots. The service is geared towards the ferrying people between Tarakan Island and Kalimantan. — Villepin (villepin@hotmail.com) Click Here to post a response to this message.

Hydrofoil Vessels For Sale

Following are some of the more recent announcements. More info on how and where to buy/sell/restore hydrofoils can be accessed from our Posted Messages Bulletin Board Page. Please notify the webmaster if you discover a notice that is no longer valid, or if you get no reply when contacting the individual or organization that posted the message (unfortunately, many sellers have been remiss in notifying IHS when the vessel is sold).Messages are posted here as a service to IHS members and visitors to the website. Please be aware that IHS does not recommend products or services. While we know of no serious problems having arisen from messages posted here, we are not able to verify that offers posted here are legitimate or that individuals responding to the offers are sincere. Accordingly, caution should be exercised in initiating and conducting business as a result of messages posted here to ensure your personal safety and the safety of your financial account information..

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Grumman Runabout -1958 Museum Piece

[20 Aug 02, updated 01 Oct 03] For Sale: Sea Wing Hydrofoil-Grumman 1958 14’8″. New Mercury 40 HP, Trailer, Original 35 HP Evenrude Lark (stuck), Morse Controls. Runs great. I am in Georgia USA. Can deliver in Southeast USA. $15,500.00. — Myrel Harner (ireneharner@juno.com)

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Kolkhida Hydrofoil For Sale – DELFIN 1

[22 Sep 03] We have for sale a seagoing hydrofoil with capacity of 124 passengers. Click Here for Technical Specifications and full set of color photos, and details of the offer (Adobe Acrobat file, 400K). Price: 270.000 Euro FOB Kolobrzeg — Miroslaw Balicki, Kolobrzeg Passengers Shipping Company (kzp@pro.onet.pl)

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New METEORS For Sale (Two)

[14 Jul 03] Zelenodolsk Shipyard, Russia announces that two (2) METEOR hydrofoils in production are for sale. Projected date of delivery is April 2004. Choice of Russian engines or Deutz (Germany) engines. Price ranges from 500 000 Euros to 950 000 Euros. Includes all certificates and our guarantee (1.5 year). — Sergey Nikonov (zdsip@nimb.ru)

KATRAN Hydrofoils For Sale

[12 Jul 03] We propose for sale from direct Owners following sea-going hydrofoils:

  • – Design “Katran” (“Kolkhida”), built by Volga Shipyard, Russia in 1996 (1995 2nd vessel);- The ship was built in compliance with the Rules and under the supervision of the Maritime Register of Shipping of Russia, class KM * 2 A3 Pass. Hydrofoil;- Reclassified by RINA, 100 – A -1.1; Nav S; TP;- USCG approval- Gross tonnage/Net tonnage: 135GT/53NT;- Engines: two MTU-made 12 V 396 TE 74 diesels, each of 1260 kW (1714 h.p.); 2nd vessel – two MTU-made 12 V 396 TC 82 diesels – each of 1050 kW (1430 h.p.);- Engines’ hours: less 3000– Passenger capacity – 140 (150 2nd vessel)Length, m 34,5Breadth, m 10,3Height above water (foil-borne), m 10,8Height above water (floating), m 8,9Floating draught, m 3,5Foil-borne draught, m 1,9Light displacement, t 56Full displacement, t 72Foil-borne sailing range, miles 200Foil-borne speed, kn 34Crew 5Both vessels are equipped with air-condition system.
  • Seaworthiness:
    • – The normal operating conditions for cruising foil-borne are sea state with waves up to 2 meters high and winds up to Force 5.
    • – The most unfavorable conditions for cruising hull-borne are sea state with wave height 3 meters and wind Force 6.

We recently inspected the hydrofoils and confirm that the vessels are well-maintained and are in tip-top condition. Inspectable in N.America by arrangement. Additional information is available upob firm/named interest. — Brgds/Vyacheslav Fyodorov ; Cielo Trading Ltd ; Tel: +38 048 743 80 85 ; Fax: +44 870 125 34 00 (via UK) ; Email: (slava@cielo-trading.net )

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A Gas Turbine Engine For Your PHM

[2 Jun 03] GTE For Sale: proposed as suitable to replace the LM2500 in a surplus PHM or a commercial vessel requiring this kind of power: 20,000 HP. Built by Mashproekt in Ukraine; No operating time accumulated; Model designation D59 (original USSR designation for same model, only with a reversing mechanism: GT16000); Maximum continuous rating (MCR) – 20,000 hp in ISO conditions; Power turbine rated speed : 5200 rpm (A 3000 RPM power section is available from Russia for only $128,000 and it includes exhaust plenum and driveshaft ready to couple up to the PHM gearbox); Direction of rotation: counter-clockwise (looking at the output shaft flange), non-reversible (reversing mechanism not needed to power a water jet) ; Fuel control system operation: stabilized fuel flow rate; MTBO – 10 000 hr: (100% MCR – 300 hr, 80% MCR – 900 hr, 70% MCR and less -10 000 hr). If engine load never exceeds 70% MCR, MTBO can be extended to 20 000 hr.; Total life time – 60 000 hr. Stored in Michigan USA; Asking US$500,000  with 2 water jet drives. I would like to be put in touch with some boat builders around the Mediterranean area who might be interested. — E J Potter email: (potterej@earthlink.net); phone: 1-561-468-3587.

53-Page Technical Manual(Adobe Acrobat File – 612 kb)

Click Here

.[7 Nov 02] Looking for a good home for the H/V ALBATROSS. Hull and cabin are in good condition. However, she’s missing foils, strut, shaft, rudder, and engine. Anyone knowing of a museum, school, conservator, etc. interested in having it donated to them, please let me know. — Robert Miller  cbbi@aol.com

Response…

[7 Nov 02] For historical and other information and photos about Bob Miller’s conversion of the ALBATROSS to a houseboat, Click Here. For historical information and photos about the ALBATROSS in its prime, see the Helmut Kock biography on this site.

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Seahawk Ltd. Offers Olympias

[21 Oct 03] Two OLYMPIA type hydrofoil vessels for sale. Both in top condition. Hydrofoil passenger vessel. Built in Russia 1993 & 1994. Hull : alloy. L – 37.54, B – 8.40, Depth – 2.60, Draught 4.60/1.40, GRT – 298 T, NET – 89 T, DW – 82 T, Main engine – MTU 16V 396 T E 74 / 2×2000. Classification : Det Norske Veritas. Renovations : Both vessels are seriously renovated. Last serious renovation : 2000. Sale price US 1.5 MIO each. Location : Trading between Finland and Estonia

Seahawk Ltd. Offers Superfoil Ferry

 

[30 Sep 02, updated 21 Oct 03] Directly from the Owners can offer for sale the following air conditioned Superfoil passenger ferry. Main particulars: Built at : Almaz Marine Yard JSC, St.Petersburg, Russia in 2002; LOA : 41 m, B : 12.4 m, Draught : fully loaded at speed / 1.2 m, at rest with retracted foils / 1.7 m, at rest with foils in operational position / 3.4 m; Passenger capacity : 286; Main engines : MJP Waterjets (Mercedes) Type 4000 M70 / 4 x 1740 kW MCR / each 1900-2000 RPM / easy and quick dismantling of main and aux. engines; Gensets : TechnoScan TS90 / 2 x 70kW / 87 KV*A; Gearboxes : Four reversing flange-mounted ZF 4650 / electrically operated; Service speed at sea State 3 : 55 knots; Range (34t DW; 55 kn. speed ; 10% margin) 200 nautical miles; Seakeeping : 2.5 sign. wave height at 100% MCR; Foils : Two fully retractable hydraulically controlled forward fully submerged foils made of high-quality titanium alloy; Interceptors : Two hydraulically controlled transom interceptors made of high-quality titanium alloy; Foil & interceptors control system : MTD / AURORA active Foil & Interceptor; Control System. FICS-3 supplied; Rudders : Two hydraulically controlled suspended rudders made of high-quality titanium alloy providing great control improvement; Classification : DNV 1A1 HSLC R3 Passenger E0, IMO HSC Code, Category A; Accommodation : 62 passenger seats in business class with 1000 mm pitch, 224 passenger seats in tourist class with 900 mm pitch, Self-service bar in business class, Large kiosk/bar, 21 sq.m duty free shop, audio/video entertainment system; Deadweight: 34.000 kg.; Crew : 12×75 kg / 900 kg.; Luggage : 286 x 10 kg / 2860 kg.; Fuel oil : 4740 kg.; Fresh water : 1000 kg.; Duty free goods : 3.050 kg; Capacities : Fuel oil : 10.000 L. Fresh water : 2000 kg. Hydraulic oil : 200 L. Lube oil : 250 L. Waste oil : 250 L; Hull / superstructure : High quality marine grade aluminum alloy type 1561; Service life : 20 years; Environmentally friendly : Extremely low wash up to max speed, low noise. Fulfills IMO emission regulations of Year 2000. Sale price : USD 7.0 MIO; Location : Europe. — Y.Eero, Managing Director, Seahawk Ltd. (seahawk@estpak.ee)
Building Hydrofoils

Building Hydrofoils

International Hydrofoil Society Correspondence Archives…

Posted Messages and Frequently Asked Questions (FAQs)


Build Your Own Hydrofoil
(Last Update 28 March 2011)See also the FAQ page on Student Projects and visit the IHS Links Page for sources of design information

Return to Posted Messages Bulletin Board


Crash Recovery

[11 Sep 01] About 1970 I designed and built a hydrofoil called “Sabrefoil”. The boat had a 40 HP Chrysler engine with a long shaft. The picture here shows me at the helm, and my father-in-law is hanging on. It rocketed me at about 30 – 35 MPH down the Fox River in Illinois. Of course I crashed, went through the windshield, broke my nose, almost drowned and came down with pneumonia a few weeks later. I probably shouldn’t have gone that fast, tested in November, and used that much power on a small boat. The experience suppressed my compulsion to fly for a scant 30 years and now I’m ready to go again, this time with a more efficient design & less power. And that’s what I am working on now. — Ray Vellinga (rvell@hotmail.com)

Rotating Foils?

[26 Jun 01] Has anyone ever built a low speed hydrofoil which uses autorotating foils to allow it to get out of the water at much lower speeds? Like an under water autogyro. Does this make sense or do I need to explain myself better? — Toby (toby-peers@cableinet.co.uk)

Responses…

[26 Jun 01] An idea along the lines of what you propose has been demonstrated before on a working model. That was called the “Hydrocopter” and was developed by a Boeing engineer, since retired, named Francis Reynolds. If you are able to get hold of the following magazine you can read all about it: US Boat and Ship Modeler, Fall 1991, Volume 4, Number 16. Rather than being based on autogyro principles, the “Hydrocopter” model consisted of four powered rotor like disks mounted on inclined vertical shafts. Each shaft was connected to a centrally mounted internal combustion (chain saw) motor via drive belts and pulleys. The model floated on a catamaran hull structure while not underway. The model could in principle have hovered above the water on its rotors, but the concept was not intended simply for slow speed operation. I think the idea had a lot of potential and it is a pity nothing further has apparently become of it. Since I had come up with a similar concept to the “Hydrocopter” in the late 80’s, I corresponded with Francis Reynolds after the magazine article was published and he provided me with additional details of his work. Unfortunately I have never had the opportunity to explore this concept further myself and regrettably I failed to maintain contact with Francis Reynolds since our initial correspondence in the early 90’s. Perhaps you could write to us with further details of what you had intended to do with your idea? Did you want to experiment with such a concept by building models? I am attaching a pair of images of the “Hydrocopter” extracted from the magazine article, one of the model floating in still water, the other of it underway. — Martin Grimm, Naval Architect and Hydrofoil Enthusiast, Canberra, Australia (seaflite@alphalink.com)

[27 Jun 01] I’ve never seen something such as you describe, but I’ve run across quite a few human-powered hydrofoils which are designed for take-off speeds in the four to ten knot range. They use pedals and propellers to generate the thrust, and all are of a fixed wing design. I can share more details if you like, and I’d be interested in getting a better idea of what you’re thinking with the “autorotating foils”. — Ron Drynan (info@humanpoweredboats.com)

[4 Jul 01] I have made an autorotating pump, driven by the wave action, to circulate water. I can’t think of any reason why the reverse shouldn’t work, although I don’t know of any work in the field. Sounds clever though. — Nat Kobitz (KobitzN@ctc.com)

[4 Jul 01] Hello again, I have been searching the internet for occurrences of “hydrocopter” as mentioned in my previous response and came across the following site which briefly makes reference to its possible application as a human powered vehicle: http://www.ihpva.org/pipermail/hpv-boats/2000q1/000142.html — Martin Grimm

Hydrocopter out of the water
Hydrocopter in the water
Sportfoil Plans Wanted

[18 Jun 01] I am particularly interested in building my own SportFoil, but Michael Stevensen (Back Yard Boats) was sold out. Is it possible to advertise for a used set of plans for SportFoil somewhere at Your web site — Regards Dag Jahnsen (dagjahns@online.no) Nesalleen 15, 3124 Tønsberg – Norway; Phone +47 3301 5005 – Mobile +47 920 20 912

Industrial Designer Wants to Correspond in German about Hydrofoils

[16 Feb 01] Ich bin Industrie-Designer und arbeite als Entwickler in der Vorentwicklung einer Firma in der Naehe von Koblenz. Ich entwickle seit Jahren nebenbei an Segelboote und Muskelkraftboote in Verbindung mit Tragflügeln. In erster Linie in Zeichnungen und Konzepte, da mir fuer die Umsetzung im Moment die Zeit fehlt.Trotzdem würde ich mich ueber Kontakte sehr freuen. — UlrichPaul (u-u.paul@freenet.de)

English Translation…My name is Paul Ulrich. I am an Industrial Designer working in the design development area of a firm near Koblenz in Germany. As a sideline, for many years I have been designing sailboats and human powered vessels with hydrofoils. These designs are mainly in way of concepts and sketches / drawings. I don’t at the moment have sufficient spare time to translate these into complete designs. Nonetheless, I would most welcome anyone who wishes to contact me about these concepts.

Response…

[27 Apr 02] Mein Name ist Amminger Heinrich und ich baue an einem Boot, das sehr schnell segeln soll. Wenn Sie gute Vorschläge oder Ideen haben an deren Realisierung Sie interessiert sind, so habe ich immer Interesse an einer fruchtbringenden Diskussion. Würde mich über einen Kontakt freuen. — Heinrich Amminger (amminger@knapp.com)

Hydrofoil Amphibian – Need Plans

[19 Nov 00] I am interested in amphibious hydrofoils. I read in in your website that Bob Johnston was involved. Are there any other principals who are still around? Also I was told by someone that they had seen a photo of what appeared to be a non-assault and perhaps commercial amphibious hydrofoil. I would appreciate any additional information you might be able to provide. We would like to retrofit a DUKW as a hydrofoil and it would be invaluable if I could contact any of the original engineers as well as the blueprints. — Dan Clark (danielclark@ureach.com)

Sportfoil Plans Sold Out

[8 Sep 00] I’m afraid the Sportfoil plans are no longer available. We finally ran out of them a while ago, and it’s not really practical to reprint. We still have the Interflight Hydroflier page on our web server (http://www.stevproj.com/Carz/XBoats2.html) as a point-of-interest for people. — Michael Stevenson (mike@stevproj.com), Back Yard Yacht Club (BYYC)

Roving, RAVE-ing Folksinger

[11 Jun 00] I’m researching foils now. I’ve done a lot of boatbuilding, primarily because I can afford boats that way, and because I enjoy it. Since I can’t afford to buy my own Windrider RAVE, I guess I’ll have to build a hydrofoil next. I was working on a planing sort of boat, sort of a trimaran built with windsurfer hulls, but my experience sailing a borrowed RAVE from Florida across the Gulf of Mexico to the Yucatan and on to Belize has got me started in the direction of a foiler craft. Hmm, I guess its my way of saying thanks to share this story with you. The entire Captain’s Log about my RAVE trip and also my personal journal for this trip are at part of the archives section of my main site. Hope you find it interesting, I just buckled on my swash and went for a little trip. — Brian Douglas, Folksinger (folksinger@iname.com)

Response…[11 Jun 00] Your narrative is reminiscent of Dave Keiper’s book Hydrofoil Voyager about his travels across the Pacific in his 31-foot hydrofoil sailing yacht WILLIWAW. You seem to have a similar seafaring spirit of adventure and appreciation for hydrofoils. I don’t know if you have read this book; unfortunately it has gone out of print. Anyway, WILLIWAW would seem to be more suited to open ocean than RAVE; it might be possible to recreate this vessel from the original plans and design calculations, but it would be a major project. — Barney C. Black (webmaster@foils.org)

Boat Plans

[5 May 00] I am looking for plans for a small outboard hydrofoil. — Michel Bourgault (bourgaul@ntic.qc.ca)

Response…[5 May 00] Look at http://www.foils.org/popmags.htm. Also, read the article at http://www.foils.org/upright.htm.

Which Foils Are Best to Use?

[29 Mar 00] I’d like to design a hydrofoil sailboat, and I need data about the foil profiles to use. This boat is not for business. I just want to build my own race boat with a friend and sail it as fast as possible. I’d like to know whose profiles are frequently used for 5 to 20 knots speed (length ratio / thickness / profile name / symmetric or not) and at which angle to use them. The goal is not to lift the entire boat (surfing shaped hull) but to help it. — (Francois.Rougier@matranortel.com)

Build a Sailing Hydrofoil

[12 Feb 00] I just came on your site because I’m researching foils now. I’ve done a lot of boatbuilding, primarily because I can afford boats that way, and because I enjoy it. Since I can’t afford to buy a RAVE, I guess I’ll have to build one next. I was working on a planing sort of boat, sort of a trimaran built with windsurfer hulls, but an experience with foils has got me started in this direction. — Rusty Clauss (rustyclauss@erols.com) website: http://www.pan.com/folksinger

Wanted: Small Hydrofoil Sailboat Design

[4 Dec 99] I am very interested in Frédéric Monsonnec’s sailing mini-foil, but he has not answered repeated requests for more information. Has anyone else built something like his trimaran? Specifically, a sailing hydrofoil that holds one person, and can be built cheaply? It looks like the outer foils pivot. Is this the case? I would appreciate information about cheap, car-toppable(if possible), home-built hydrofoiling one-or two-person sailing multihulls.

Response…[4 Dec 99] David Keiper’s 14 ft STORMY PETREL (now owned by Buck Trippel) and Donald Nigg’s FLYING FISH (contact AYRS for info) come to mind. It couldn’t hurt to contact Dave Carlson, who successfully installed Dave Keiper’s hydrofoil kit to his catamaran. Also, take a look at the TRIAK with hydrofoil option. [Unfortunately, the Team Triak website has disappeared from the net. If anyone finds the site at a new URL please notify the IHS webmaster] Suggest you also visit the IHS Photo Gallery page devoted to sailing craft, though admittedly this needs a lot of expansion (member and visitor contributions are solicited and appreciated… send them in!) — Barney C. Black (webmaster@foils.org)

Home-Built Foil Test Bed For Sale

[11 Sep 99] 25′ hydrofoil powered by a 454 marine power. Hull is home built. Used as test bed for new foil designs. Hull and engine has aprox. 300hr. Information and pictures on request. — David Thomas; 405 Dominion Rd.; Chester, Md 21619 USA; phone: 410-643-5180; fax 410-604-3317; email: dthomas@skipjack.bluecrab.org

Need Source of Hydrofoil Extrusions

[1 Oct 99] I am interested to know if there is a convenient source for small (4″ to 6″) hydrofoil extrusions for a pet project (6×6 amphibious hydrofoil). — David Rauseo (rauseo@totalnetnh.net)

Response…[1 Oct 99] I don’t know of anyone that offers foil extrusions for sale “off the shelf” for hobby purposes, but there are some potential sources. At least a few people have gotten spare foils for the Trampofoil water bike and have used them for other purposes. Evidently the price is reasonable. A fellow in Europe, Chris Plaass was preparing to order a foundry run of extrusions to be used by people for adding foils to daysailing catamarans. I have put him down for a copy of this email, but I do not know if he ever followed through with his plan. Finally, there were several articles in the handyman magazines back in the 1950s/60s on how to add hydrofoils made of wood and fiberglass to motorboats. You can find info on some of this on our website. This might be a workable approach for you, at least for a prototype. — Barney C. Black (webmaster@foils.org)

Best Lifting Shapes For a Hydrofoil Sailboat

[7 Aug 99] I am currently working on an experimental hydrofoil sailboat and would like some recomendations on the best lifting foil shapes for these types of boats. My boat is about 23 feet and will top out at about 200 lbs. I’m no engineer, so recommending an NACA foil number would be perfect. — Richard B. Johnson (Richard.B.Johnson@kla-tencor.com)

Response…[7 Aug 99] Well, if I were trying to set a speed record, I’m not at all convinced that a hydrofoil is the way to go. In my opinion, hydrofoils are niche vehicles, and the current speed record has passed beyond their niche. The only NACA airfoils that would be good hydrofoils are the 6-series. You would have to match their design lift coefficients to your requirements to pick the right one. But I wouldn’t use a NACA airfoil, as there are more modern ones designed specifically for use in hydrofoils. Look for a book by Richard Eppler, “Airfoil Design and Data,” Springer-Verlag, 1990. Now out of print, but your library can probably get a copy for you. His E817 is designed to have minimal caviation for lift coefficients between 0.12 and 0.60, and is 11% thick. E818 is thinner at 9.4%, but has a much more critical leading edge shape. Whether you use an Eppler hydrofoil or a NACA airfoil section, you must be sure to build it to a high degree of accuracy. I would shoot for a tolerance of 0.01″ and maybe 0.005″ if you can achieve it. For speeds around 60 kt, subcavitating hydrofoils may not be possible, and you’ll have to design a supercavitating hydrofoil. And if you do that, you may not be able to achieve the lift/drag ratios needed to get to 60 kt. I’ve sailed 60 mph in a landyacht, and you’re going to need an extraordinarily efficient craft to do that on the water. For example, let’s say you plan to hit 60 kt in a 30 kt wind. If you can achieve an L/D of 10 for everything that’s in the water and an L/D of 4 for everything that’s in the air, including the drag on the hull, you can just do it. Wind tunnel tests of a landyacht with a rigid wing sail, tested with no wheels, had a peak L/D of 4.4, so that is in the ballpark. But getting an L/D of 10 for the foils…. You may not be an engineer, but you will have to do some sophisticated engineering to achieve your goal. When I talked to Greg Ketterman about designing LONGSHOT (record breaking forerunner to the Hobie TRIFOILER), he said that a velocity prediction program was absolutely essential. — Tom Speer (tspeer@tspeer.com); http://www/tspeer.com

A Small, Fun, Cheap Hydrofoil

[16 May 99, updated 17 Feb 03] I ‘m the “webmaster” of a little site : “PK hydroptere de loisirs” (with alta vista, key word: hydroptere) I have designed and built a little hydrofoil boat for only $800! This is not a boat for speed record but for “the pleasure” ! — Frédéric Monsonnec (frederic.monsonnec@wanadoo.fr)

[25 Aug 98] I have been working on [a hydrofoil sailboat design] project, off and on, for over 25 years… I came up with the basic superstructure in 1970-1 !! This is one of my life long loves. My goal is to see my craft “fly”, and put my concepts into record breaking reality (I am not really interested in becoming a boat manufacturer. I don’t know the potential market well enough to venture an opinion as to its marketability/ profitability). The few people I have discussed parts of this project with are impressed. Parts of it have already been “borrowed” over the years, as a result of those discussions, hence my wariness. But life is too short. I have renewed interest in bringing my craft to life. I am hoping that through this inquiry, perhaps I can connect with someone I can trust, and who will participate in some way… even that I haven’t thought out. That’s part of the fun of it all!! The physics are pretty easy, it’s the human element that gets complicated! — Tyler Ahlgren (tallgreen@earthlink.net)

[20 Mar 98] I want to turn my cat into a high flying above the water speed machine. Please let me know where I could get more info in this area. — Brent (brent@gator.net)

[20 Mar 98, updated 30 Oct 00] You have several options as follows:

  • You can buy an add-on hydrofoil kit. These were to be available from DAK hydrofoils, but unfortunately the owner Dave Keiper died in 1998 before he could complete the design. The DAK website is still open at http://www.wingo.com/dakh/ www.wingo.com/dakh. You may be able to buy the dies to have a foundry extrude Dave’s foils; Contact Frank Keiper at dak.hydrofoils@home.com. A copy of Dave Keiper’s recent files related to the proposed kits is available from IHS; for details click here.
  • You can design and install hydrofoils yourself, though this is an effort for a really dedicated hobbyist. There is an article in the Winter 97-98 IHS Newsletter by Tom Lang who did just this in the 1950s and sold the kits on the open market. The newsletter comes with IHS membership, $20 per calendar year. There is lots of design info available through reprints and back issues of the Amateur Yacht Research Society and Multi-Hulls magazine.
  • You can trade in your existing boat for one designed as a hydrofoil such as Hobie TriFoiler or WindRider Rave.

— Barney C. Black (webmaster@foils.org)

[14 Dec 97] I am looking for a picture/s of a Sea Scooter built in the late sixties. Attached is a drawing taken from a US patent number 3,456,609 by Peter Thomas and Mence Nott from 1969. The craft was actually built. I saw some foilborne video clips of the craft with one person riding it. I think they tried to market it and I don’t know the outcome of this attempt. — Amiram Steinberg, Naval Architect (amiram@netvision.net.il)

[26 Mar 98 updated 28 Mar 2011] I am looking for the plans to build the Solo Hydrofoil that was in the September 1967 issue of Popular Mechanics. It is a 1-man Hydrofoil; foam-filled fiberglass hull by Italian designer Renato Castellani. I now have about a 1/4 page line drawing of this of this craft that is just wild looking. Have others built this that you are aware of? Is there a more modern design? I’m dying to make one but no one seems to know of him or this craft. — George Faulknor (georgefaulknor1@comcast.net)

[14 Nov 97] I have a 22 ft aluminum bay runner to which I am interested in installing foils. The boat is powered by two 75 hp Honda outboards. I commercial fish and wish to increase the boat’s performance. Any information that you feel would be of help would be of help as I know nothing about foil design. — Jerry Jones (boat@ix.netcom.com)

[25 Sep 97] IHS Member Malin Dixon is undertaking to design a small hydrofoil boat that is an alternative to a Rigid Inflatable Boat (RIB). Malin runs an electronics company in England and finds that the main thing he is short of is time to apply to this project. Is there an engineering graduates who would be interested in coming to work for Malin to get this off the ground (or water)? Is there a designer with a similar or compatible project in mind that would like to collaborate? If so, contact Malin Dixon by email for more information (gallery@foils.org).

[24 Aug 97] I am interested in getting some help with designing my first hydrofoil for personal use and should be capable of carrying two people and enough fuel to circumnavigate the mainland of Australia and out run anything else on the water. It would be best if it would be tri-hulled (for stability) and should be very small indeed! mark79@ibm.net

[15 Sep 97] I am trying to find plans to build a hydrofoil. I live in Juneau Alaska, and I am a marine mechanic. More efficient means of transportation for Southeast Alaska are desperately needed. I am talking about a motor craft, and I do have an existing hull to experiment with. It seems there is a lot of mystery around this kind of project; no one seems to know the basics. Is there a formula for weight to power to drag ratio? I don’t know if I’m asking the right question. A basic foil design would be nice… I could fabricate it if I had plans and dimensions. — Cary Taylor (CTaylor169@aol.com)

[18 Sep 97; updated 23 Nov 00] Our experience with home-built hydrofoils has led us to the conclusion that low wing loading is VERY preferable. Most builders go for low drag, which means small foils, which leads to high loads. I took a look at the DAK site, http://www.wingo.com/dakh, and it does have some good looking foils. Another site you should look at is ours! We have a set of plans for building a small powered hydrofoil (which may be smaller than you want). At any rate, you should look at different approaches to narrow down what you want to build. Our Sportfoil plans are viewable at: http://www.stevproj.com/SpecPurp.html. [As of mid-2000, Sportfoil plans are sold out, with no plans to reprint them – Ed.] Our latest, but not available, hydrofoil project is at: http://www.stevproj.com/XBoats.html. Building a pretty good sport hydrofoil is not really magic. You should be able to have a lot of fun, but don’t let the preponderance of technicalities weigh your project down. –Mike Stevenson (mailback@stevproj.com)

[18 Sep 97] I have found that most people who call/ Email are enthusiasts or would-be designers / builders; that is they want to build a hydrofoil, not buy one. When asked the cost I answer that the conversion of a 24 foot outdrive-powered craft such as [I did to create] TALARIA III would be about US$20,000. Not expensive, in boating terms, but beyond the casual hobbyist’s budget. The callers are usually deterred when they find out it requires an autopilot. If so, I suggest the Hobie TRIFOILER mechanical submerged foil concept or the Russian and Florida model boat hydrofoil surface piercing design concepts as approaches to consider. The bulk of the questions are usually about the hydrofoils, an area where I have little knowledge; my background is better in the fields of automatic control, hydraulics, analog electronics, and software. I am pleased talk with anyone who I can be of help to. Regarding the sale of kits/conversions, the market interest has not so far been sufficient, i.e. no one has expressed an interest in buying a kit [to duplicate the TALARIA conversion]. — Harry Larsen (talaria@foils.org)

[18 Aug 98] TALARIA III’s price is US$35,000, delivered in Seattle. It includes a trailer modified for launching TALARIA III. I have had a few persons in the Seattle Washington USA area or visitors stop by to see the boat. If mutually convenient I can take them for a ride. (It is kept on a trailer). — Harry Larsen (talaria@foils.org)

I am currently thinking of building a 2 man craft capable of traveling through the afternoon chop of Peconic Bay on Long Island. I work with aluminum, and have access to CNC Router and many other shop tools. Please contact me if you could help. — Chris Marotta (WCREEK@msn.com)

I have for several years, been very interested in designing, discussing, and building a prototype. I looking forward to meeting your members and learning more about the organization. — Bill Hodge (bill.hodge@daytonoh.ncr.com)

[29 May 97] I’m interested in designing and building a high speed single or two seater hydrofoil and need as much info as I can get. I’m still in the concept stage and would like to discuss ideas with other hydrofoil designers/builders. — Neil Morris (morrisn@ihug.co.nz)

[10 Aug 97, updated 11 Sep 01] If you are talking about a motor powered craft, you can get plans and components for this project from Hydrofoils Inc.; PO Box 6006; Lake Worth FL 33466; 561-964-6399 voice or fax; web page, www.hydrofoil.com. Also, check out the Back Yard Yacht Club’s SPORTFOIL (plans US$15), P.O. Box K; Del Mar CA 92014, 619-481-3111, e-mail: byycord@stevproj.com. [As of mid-2001, Sportfoil plans are sold out, with no plans to reprint them – Ed.] If you are talking about a sailing vessel with hydrofoils, contact DAK Hydrofoils, 123 South Pacific Street, Cape Girardeau MO 63703, phone: 573-651-6582, (web site: www.wingo.com/dakh/). [Unfortunately Dave Keiper died, and DAK hydrofoils is no more. The website is still active, though. Dave’s brother Frank answers his email at dak.hydrofoils@home.com. – Ed.] Another contact for sailing hydrofoils is Dr. Sam Bradfield. He can be reached at: Prof. S. Bradfield; Hydrosail, Inc.; 3040 South AIA Highway # 154 F; Melbourne Beach FL 32951, email: hydrosail@aol.com. — Barney C. Black(webmaster@foils.org)

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Suggest Yahoo Group Message Boards – (Scott)     07-18-16 – 6:58 PM

    •  I am the creator of the worldwide Vintage Ultralight and Lightplane Assoc (V.U.L.A.)   and have been relying on Yahoo Group Forums
for 15 years for the many different specific topics relating to this
very narrow segment of aviation.     I am trying to be very helpful
here and not critical in any way but I have been in the computer business
since 1978 and recognize when a large group of people interested in
narrow topics could benefit from some upgrades in the functionality
of their information storage and retrieval systems.   Please let me be of
some assistance by asking that some decision makers and leaders of
this organization contact me for some discussion.   I have a total of nine thousand user/group members in sixteen different Yahoo groups
and we do not pay a penny for the services which include data base
file storage,  photo album maintenance and forum message management
etc.    I firmly believe that with easier and more powerful info sharing
tools there would be much more activity and info sharing among the
group members here.    I personally have a few projects that I came here to get help with 1.  a pedal powered boat that I want to use
some alum helicopter rotor blades ( great airfoil shapes ) as hydrofoils.
I also want to incorporate either the surfboard or waterski hydrofoils
in the Federal Aviation Administration specified  103 seaplane
design that would not require any regulation of building or certification
of pilots etc.  These are the reasons for my visiting this website.
Contact me at 678-290-0507  Scott Perkins or

 

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The International Hydrofoil Society (IHS) Hydrofoil Correspondence Archives

 

Updated last November 1, 2009

R/D: Student Projects/Thesis etc.
 

R/D: Student Projects/Thesis etc.      Top

Wake Energy and Damage From Fast Ferries
Click below to open Archive.

http://www.foils.org/wake.htm

[Date/Time=03-21-2002 – 10:47 PM]

Name:webmaster@foils.org [Msgid=236659]
Cavitation
Cavitation Bucket Diagrams…

      • [2 Mar 01] We are French students working on foils and the problem of cavitation. In the FAQ of your web site, we have read a message of Mr Martin Grimm who speaks about cavitation bucket diagrams. We would like to find an example of these diagrams to illustrate a tutorial project. Could you help us by sending us a diagram or any valuable information? — Mathilde Pascal (

Mathilde.Pascal@etu.enseeiht.fr

      • ) and Ludovic Léglise (

hya54@etu.enseeiht.fr

      • )
      • Responses…
      • [2 Mar 01] I’ve attached an excerpt from the paper I just gave to the Chesapeake Sailing Yacht Symposium. It shows such a diagram and discusses its relevance to the hydrofoil design. I’ve also included an enlarged version of the diagram. I’ve chosen a somewhat idiosyncratic way of plotting this diagram. The X axis is often angle of attack, but I’ve chosen to use lift coefficient because different sections have different zero-lift angles of attack and lift coefficient is what really counts to the designer. But the biggest difference is that I have plotted velocity ratio on the Y axis instead of pressure coefficient or cavitation number. I did this because pressure coefficient is proportional to velocity squared, so it emphasizes areas of high velocity which are not of real interest. By plotting vs. velocity ratio I have expanded the bottom of the chart which is where the section will be operating when cavitation is a concern. The other thing you will find on this chart that I’ve never seen on any other diagram is an overlay of freestream velocities and foil loading corresponding to incipient cavitation. I found this really helped me to understand the section curves in the context of the boat’s design. I haven’t actually plotted it out yet, but I suspect that had I used pressure coefficient for the Y axis, the lines of constant foil loading would have been straight lines. Finally, my apologies for using English units. I’ll leave conversion to metric as an exercise for you students! — Tom Speer (

tspeer@tspeer.com

      • ) website:

www.tspeer.com

      • ; fax: +1 206 878 5269
      • [6 Mar 01] Tom Speer has already given you a good reply following your request for examples of ‘cavitation bucket diagrams’. I will however provide you one more example which is presented in the more usual manner with section cavitation number on one axis and foil angle of attack on the other. The attached diagram has been adapted from one of the figures in a very well presented and comprehensive book on the subject of marine propellers, namely: Marine Propellers and Propulsion, by J.S. Carlton (Senior Principal Surveyor, Technical Investigation, Propulsion and Environmental Engineering Department, Lloyd’s Register) Butterworth-Heinemann Ltd, Linacre House, Jordan Hill, Oxford OX2 8DP First published 1994. ISBN 0 7506 1143 X.
      • There are no scales on the axes of the diagram as it is illustrative only. You can see from the shape of the curve where the ‘cavitation bucket’ term came from. Even though you may already be familiar with the terminology on the diagram, I will run though it for completeness:
      • The section cavitation number is defined as:
      • Sigma o = (po – pv)/(0.5 rho V2)
      • where:
      • po = Free stream pressure in absolute terms, i.e. not relative to atmospheric pressure (SI units would be Pa).
      • pv = Vapour pressure of the water in absolute terms (SI units of Pa).
      • rho = Water density (SI units would be kg/m3)
      • V = Free stream velocity, i.e. well upstream of the foil (SI units would be m/s)
      • (I have avoided using subscripts or the usual Greek symbols so that I can send you this message in plain text)
      • For a foil traveling say 1 metre below the water surface in salt water, po can be calculated as:
      • po = patm + rho.g.h
      • where:
      • patm = Atmospheric pressure, say 101300 Pa
      • g = Acceleration due to gravity, say 9.81 m/s2
      • h = submergence of the foil (in metres if using SI units consistently)
      • hence:
      • po = 101300 + (1025 x 9.81 x 1.00) = 111355 Pa
      • In salt water you can take the vapour pressure to be say: pv = 17000 Pa to be on the conservative side. The vapour pressure of distilled fresh water can be as low as 1700 Pa.
      • You can see from the diagram that at high angles of attack, cavitation will occur on the top side of the hydrofoil (called the ‘back’ in propeller terminology). At low or negative angles of attack, the low pressure moves to the bottom of the hydrofoil (this being called the ‘face’ on propellers). If the water flow past the foil is fast enough and the foil is not deeply submerged, then cavitation can even occur when the foil is at the zero lift angle of attack. This form of cavitation is referred to as bubble cavitation because of its appearance. This cavitation occurs simply a result of the thickness of the foil which causes the water velocity to increase slightly as it passes the sides of the foil and in turn the local pressure of the water drops below the vapour pressure.
      • These days, there are techniques available to design foils which are fairly tolerant of variations in their angle of attack and so can avoid the onset of cavitation. Such foil sections have a fairly wide cavitation bucket (defined by the parameter “alpha d” on the figure), though the limit at which bubble cavitation occurs may then shift to higher cavitation numbers so the bucket is no longer as deep. — Martin Grimm (

seaflite@alphalink.com.au

      • )
      • Follow Up…
      • [10 Mar 01]We have built a model of a foil with a NACA 0015 profile. Where could we find the cavitation bucket diagram corresponding to this kind of foil? Mathilde Pascal (

Mathilde.Pascal@etu.enseeiht.fr

      • ) and Ludovic Léglise (

hya54@etu.enseeiht.fr

      • )
      • Follow Up Response…
      • [11 Mar 01] Here is how you build a cavitation diagram:
      • Go to

http://raphael.mit.edu/xfoil/

      • and download XFOIL. This is the most powerful airfoil section design tool available. Do not think of using anything else you can download from the Web -they are all inferior to this program.
      • Put in the coordinates for your foil.
      • Analyze the section for a number of angles of attack, covering the intended range of operation. Examine the pressure distributions for each angle of attack.
      • For each angle of attack, record the minimum pressure coefficient that occurs anywhere on the section. The cavitation number, sigma, is simply the negative of the minimum pressure coefficient, Cp. (sigmai = -Cpmin where sigmai is the cavitation number for incipient cavitation and Cpmin is the minimum pressure coefficient)
      • Plot the minimum pressure coefficient vs angle of attack or lift coefficient, according to which you prefer.
      • Repeat steps 2 through 5 for each section you wish to consider.
      • I recommend you plot sigmai vs CL for the following reasons. If you disregard the vapor pressure of water, which is small, the critical speed for incipient cavitation at the surface is approximately
      • Vcrit = 14/sqrt(sigmai) m/sec
      • sigmai = (14/Vcrit)2
      • Vcrit is the freestream velocity above which cavitation may occur. Note that this is a horizontal line when superimposed on a cavitation diagram. If you know the freestream velocity (boat speed) and you know the lift coefficient, then you know how much load each square meter of the foil is carrying:
      • L = CL * 1/2 * rho * V2 * S
      • [L/S]crit = CL * 1/2 * rho * (Vcrit)2
      • [L/S]crit = CL * 1/2 * rho * 142/sigmai
      • sigmai = {1/2 * rho * 142 / [L/S]crit} * CL
      • Note that for any given foil loading (L/S), the quantity inside the braces {} is a constant so this is a diagonal line extending from the origin of a sigmai vs CL plot.
      • Finally, to put together the whole cavitation picture, do the following:
      • Lay out axes of sigmai vs CL
      • Plot horizontal lines corresponding to the critical cavitation boat speeds.
      • Plot diagonal lines corresponding to the foil loading for incipient cavitation. Note that this forms a grid which is independent of the choice of foil section.
      • Plot sigmai vs. CL for the hydrofoil section.
      • Now, not only do you have the cavitation diagram for the section, you can relate it to key design aspects of the boat as a whole. You can see immediately how heavily the foil can be loaded and how fast the boat can go before encountering cavitation. Since the grid is universal, it can be used to define the requirements for designing a hydrofoil section, which you can do with XFOIL as well.
      • There is an excellent paper on the cavitation of hydrofoils in the latest issue of the Society of Naval Architects and Marine Engineers’ Journal of Ship Research, written by researchers at the Institut de Recherche de l’Ecole Navale, 29240 Brest-Naval, France: J.-A Astolfi, J.-B. Leroux, P. Dorange, J.-Y Billard, F. Deniset, and S. de la Fuente, “An Experimental Investigation of Cavitation Inception and Development on a Two-Dimensional Hydrofoil,” Journal of Ship Research, Vol. 44, No. 4, Dec. 2000, pp. 259-269. It shows more cavitation diagrams and also the degree to which experimental cavitation occurs at Cpmin. The agreement is excellent at the bottom of the bucket and Cpmin is a conservative estimate for the sides of the bucket. They also discuss the interaction of cavitation and laminar flow, which will be important for your low Reynolds number experiments. — Tom Speer (

tspeer@tspeer.com

      • ) website:

www.tspeer.com

      • ; fax: +1 206 878 5269

[Date/Time=03-22-2002 – 11:50 PM]

Name:webmaster@foils.org [Msgid=237110]
Hydrofoil Racers — Power or Sail
Hydrofoil Racers — Power or Sail

Student Project: Racing Hydroplane

      • [5 Mar 02] I am currently a student at Teesside University in England studying Computer Aided Design Engineering. As part of a project we have to improve on an existing hydrofoil design. The boat my team has chosen to improve upon is to be capable of racing in the 2002 Unlimited Hydroplane Series of which the boat MISS BUDWEISER is currently the title holder. Could you please advise me as to where I may find design specifications of such boats especially in relation to the cockpit area (safety) and the steering mechanism incorporated in the craft? — Ben Coward (

bencoward1@hotmail.com

      • )
      • Responses…
      • [5 Mar 02] You have an interesting project, however our site is concerned mostly with fully submerged and with surface piercing hydrofoil designs. We have next to nothing on hydroplane racing craft. I am sending a copy of this response to Leslie Field (

www.lesliefield.com/

      • ) and to Simon Lewis (

www.simonlewis.com/

      • ) in the hopes that they can suggest a source the design specs you seek. You may have luck by contacting directly the racing crews of specific craft or the racing association. — Barney C. Black (

webmaster@foils.org

      • )
      • [15 Mar 02] The American Power Boat Association puts out all the specifications for the various classes of hydroplane racing crafts. MISS BUDWEISER is in the unlimited class. I believe they are presently headquartered in Detroit, Michigan. I had some discussion at one time with a former crew chief of a hydroplane racing team who wanted to put hydrofoils on the sponsons. I believe he proposed it to the APBA but was rejected at the time. — Sumi Arima (

arimas1@juno.com

      • )

[Date/Time=03-23-2002 – 12:51 AM]

Name:webmaster@foils.org [Msgid=237128]
Archive; Hydrofoil-Related Student Projects
Click on link below to open

http://www.foils.org/students.htm
[Date/Time=03-24-2002 – 1:20 AM]

Name:webmaster@foils.org [Msgid=237490]
Info wanted on Hydróptero

ViewThread

      • At 08:02 PM 4/24/02 -0400, you wrote:
      • Hellow,
      • I’m student of Transport, and I have to investigate for

Hydróptero

      • . I want to now if hydrofoils and hydróptero are the same type of boat?
      • If you have more informatión of characteristics, possibilities and restriccions for hydróptero, I apreciate you send me by E-mail.
      • Sonia Madera

somade@cantv.net
[Date/Time=04-26-2002 – 9:00 PM]

Name:Sonia Madera somade@cantv.net, [Msgid=252390]
Info wanted on Hydróptero

      • There are many magazine articles and books about hydrofoils. Visit the following page:

http://www.foils.org/refpop.htm

      • . Or, for a long list of technical references:

http://www.foils.org/refs.htm

      • .

[Date/Time=05-03-2002 – 7:20 PM]

Name:Barney C. Black webmaster@foils.org, [Msgid=255144]
Swath ships architecture Thesis

ViewThread

      • Dear Sirs,
      • My name is Giancarlo Raiola and I am a student of Naval Architecture at the Federico II University in Naples (Italy).
      • I write to you because I visited your web site and I found very interesting all the information about Swath ships. As a matter of fact, Swath ships architecture will be the subject of my graduation thesis, so I would be very pleased if you could send me some more detailed information about them, as for example their general plans and about active motion control sistem .
      • I look forward to receiving your answer soon.
      • Best regards
      • Raiola Giancarlo

[Date/Time=07-04-2002 – 3:23 PM]

Name:Raiola Giancarlo raiola.roberto@tin.it, [Msgid=278810]
Swath ships architecture Thesis

      • Dear Raiola,
      • The International Hydrofoil Society is primarily concerned with hydrofoil craft and to somewhat of a lesser extent the application of hydrofoils to other marine vehicles. As a consequence, you will not find a significant amount of information about Small Waterplane Area Twin Hull (SWATH) vessels on the IHS website.
      • A good overview of SWATH vessels is provided in Naval Engineers Journal, Volume 97, Number 2, February 1985. ISSN 0028-1425. Published by the American Society of Naval Engineers, Inc. (ASNE). More details of that issue can be found on the IHS website under the section about magazines related to hydrofoils.
      • There is a hybrid between a hydrofoil and a SWATH known as Hydrofoil Supported Small Waterplane Area Single Hull (HYSWAS) and you may find more information about that craft on the website.

[Date/Time=07-13-2002 – 3:57 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=281953]
Info wanted on Hydróptero

      • Hi Sonia, there is a French hydrofoil with name of “L’Hydroptere” go to http://perso.wannadoo.terrasse.web/hydroptere800.html (No longer available as of 060130WNW)
      • Brush up on your French, as the site is French.

[Date/Time=09-19-2002 – 5:13 PM]

Name:Vivian Dewey vvdewey@yahoo.co.uk, [Msgid=312049]
Hydroplane Formula`s?

ViewThread

      • I am wondering how do i figure out the lift of a foil and the lift coefficients (what formula’s do i use).
      • This is for a fourth year mech eng project. Basically iam looking at a V-shaped waterplane and a torpedo shaped one with winglets on the front and back of the torpedo. The boat we are trying to design is about 1m in height, 2m in length and 1m in width and weighs about 1500 lbs and has to hydroplane at 20 knots(min). So if anyone could help me out with advice or formula’s i would greatly appreciate it. Thanks

[Date/Time=09-29-2002 – 9:26 PM]

Name:Kris MacKenzie krismackenzie@hotmail.com, [Msgid=316589]
Hydroplane Formula`s?

      • There are a number of different ways to calculate lift and drag of simple hydrofoils. For following two NACA papers are useful.

http://naca.larc.nasa.gov/reports/1958/naca-tn-4168/naca-tn-4168.pdf

http://naca.larc.nasa.gov/reports/1955/naca-report-1232/naca-report-1232.pdf

      • Alternately if your library has a copy of Du Cane’s “High Speed Small Craft” the is a chapter which presents somewhat simpler formulas for hydrofoil calculation.

[Date/Time=09-30-2002 – 12:09 PM]

Name:Gunther Migeotte gmigeotte@artanderson.com, [Msgid=316835]
Hydroplane Formula`s?

      • thanks for the info
      • i’ll read the 2 papers and see what i can come up with

[Date/Time=10-01-2002 – 12:58 PM]

Name:Kris MacKenzie krismackenzie@hotmail.com, [Msgid=317375]
Info Source for Foil Profiles

ViewThread

      • I am a mechanical engineering student at the University of Nottingham, England. As part of my course I have been given the task of designing a human-powered hydofoil designed to carry two people. The craft needs to travel at a speed of 5m/s and be small enough to fit on a trailer. I have decided that a two-hull design would be best with a fan-powered propulsion system using simple gears and chains to transmit power. The problem I am having is finding information on foil designs, and in particular, foil profiles with information on how much lift and drag each profile generates with information on how these values are determined. I would be extremely grateful if you could send me any information you have on foil profiles or any links for me to follow up. Also if you have any information on human- powered hydrofoils and how I should aproach my design.

[Date/Time=10-21-2002 – 6:49 PM]

Name:Ben Jones emyubdj@gwmail.nottingham.ac.uk, [Msgid=326753]
Info Source for Foil Profiles

      • There is very little literature on hydrofoil sections, but all the equations and software available for aeroplane wings works for hydrofoils. One of the standard works is “Fundamentals of Aerodynamics” by John D Anderson. The latest edition is quite expensive, but if you can find a previous edition they are a lot cheaper.
      • There are various software applications that can calculate the lift and drag coefficients for any foil section and angle of attack. I have used an application called “Panda” from Desktop Aeronautics Inc for this. I think that these applications use 2-dimension finite element analysis to work out the flow patterns and pressure at each point on the foil.
      • The actual lift and drag can be calculated from the coefficients and the liquid density, speed and dimensions, with suitable adjustments for the aspect ratio. All the equations are in Fundamentals of Aerodynamics. They are quite complicated.
      • This approach is probably only valid for high aspect ratio wings, and won’t model the interaction with any struts. However human powered hydrofoils will certainly have high aspect ratios. Strut to wing interaction is not a big problem. Even Boeing has only recently learned how to model it, so it must have been relatively unimportant.

[Date/Time=10-22-2002 – 7:53 PM]

Name:Malin Dixon gallery@foils.org, [Msgid=327252]
Info Source for Foil Profiles

      • In addition to Malin’s excellent suggestions, here are a few additional resources you may find helpful:

http://www.humanpoweredboats.com/Links/L_Research.htm

      • – Various links to research articles and informational web-sites. Not all hydrofoil specific, but some will be helpful to you.

http://www.amazon.com/exec/obidos/ASIN/0873228278/o/qid=947990877/sr=8-1/104-9565347-4271660

      • – “Human Powered Vehicles Book” by Abbott & Wilson. This has a very detailed chapter on human powered hydrofoils, written by Dr. Allan Abbott, co-builder of the “Flying Fish” series of boats. You will find just about all the calcs needed for human powered hydrofoils in this book.

http://www.humanpoweredboats.com/Photos/HydrofoilHPBs/HydrofoilHPBs.htm

      • – Photo gallery of successful human powered hydrofoils.

http://lancet.mit.edu/decavitator/Decavitator.html

      • – Web-site for MIT’s “Decavitator”, which won the DuPont prize for fastest human powered hydrofoil in 1991.

http://www.orange.or.jp/~jsha/

      • – Japanese Solar and Human Powered Boat Association. The Japanese teams are currently the best in the world, and recently set the multi-rider world-record at 34.59 km/h over a 100m course.

[Date/Time=10-24-2002 – 9:02 AM]

Name:Ron Drynan Ron@humanpoweredboats.com, [Msgid=328140]
Info Source for Foil Profiles

      • The Society of Naval Architects and Marine Engineers (SNAME) has published the technical bulletin

Blade and Hydrofoil Section Design

      • . This bulletin includes the Blade and Hydrofoil Section Design Codes with a 29-page Owner’s Guide, and a 184 page Technical Report. It updates and complements T&R Bulletin 1-17. The Design Codes and Owner’s Guide provide tools for the design and performance evaluation of blade and hydrofoil sections. The programs are provided in both DOS and Mac formats and will run on most personal computers. The Technical Report provides analytical background information and is of interest primarily to those who wish to adapt or enhance the programs. This new publication is identified as Technical and Research Bulletin 1-45. It is being issued as a CD-ROM, and may be ordered by contacting

cpujols@sname.org

      • or by calling +1-201-798-4800. It is priced at USD50 (USD25 for SNAME members).

[Date/Time=10-29-2002 – 7:20 PM]

Name:Barney C Black webmaster@foils.org, [Msgid=330718]
Ways to Cross the Channel

ViewThread

      • I am doing a research project on different ways to get across the English Channel. I was wondering if you have any useful links or information about using hydrofoils.

[Date/Time=10-31-2002 – 5:43 AM]

Name:Tracy Bickford tracybickford@hotmail.com, [Msgid=331484]
Ways to Cross the Channel

      • IHS does have a links page at

http://www.foils.org/linksout.htm

      • . You should also check our page on popular books (

http://www.foils.org/popbook.htm

      • ). You may be able to find some of these books such as Hovercraft and Hydrofoils in your library. We have a similar page for popular magazines at

http://www.foils.org/popmags.htm

      • . Finally, I note that Steve Gillett of the Red Funnel ferry company recently sold two of the Shearwater hydrofoils through a notice on the IHS site. I don’t know if he would answer you, but there is an email address and phone number for him in his notice, which is on our page at

http://www.foils.org/buyferry.htm

      • . Hopefully one of those resources will get you started.

[Date/Time=10-31-2002 – 5:50 AM]

Name:Barney C Black webmaster@foils.org, [Msgid=331485]
Supercavitating Propellers

ViewThread

      • I am a student at Naval Architecture and Ocean Engineering Faculty of Istanbul Technical University. I have homework about supercavitating propellers. If you have any text,photos,videos or CD about supercavitating propellers, could you help and post me?

[Date/Time=11-05-2002 – 8:37 AM]

Name:Yasin Uslu usluyasin@hotmail.com, [Msgid=333656]
Supercavitating Propellers

      • The SES S/C prop data is still classified.

[Date/Time=11-07-2002 – 8:23 AM]

Name:Nat Kobitz KobitzN@ctcgsc.org, [Msgid=334738]
solar hydrofoil

ViewThread

      • might be a usefull link for anyone researching this stuff.

www.ses.marquette.edu

      • would love to hear comments from anyone.

[Date/Time=11-17-2002 – 1:07 AM]

Name:Terrence Breitsameter Bensenvill@aol.com, [Msgid=339189]
solar hydrofoil

      • Terry
      • Thanks for the reference to the Solar Hydrofoils.
      • I will add it to our IHS links page. They are very interesting. If you have any more performance details we would welcome your comments.
      • Bill White

[Date/Time=11-23-2002 – 6:47 PM]

Name:Bill White whitewn@flash.net, [Msgid=342528]
Surf Hydrofoil Project

ViewThread

      • hi there, I am studying Surf Science at the university of Plymouth. I am looking into the application of hydrofoil technology to surfboard fin design for my third year project.
      • I am going to construct a hydrofoil fin that can lift a surfer at between 8-20 knots.
      • I have been researching foil cross sections but am at a bit of a loss as to which one too choose due to the vast amount of sections and data
      • presented. My initial thoughts were to use a symmetrical NACA 0012 foil but then thought that something like the NACA 2412 would be more suitable and provide more lift. I also noted that many of the Eppler E8’s such as E874 were reccomended for hydrofoil use. How do symmetrical foils compare to non and do you have any recommendations for foil cross sections that I could use.
      • Thank you for your time.
      • Ben Bryant.

[Date/Time=02-07-2003 – 1:26 PM]

Name:Ben Bryant benjamin.bryant-mole@students.plymouth.ac.uk, [Msgid=374049]
Re; Surf Hydrofoil Project

      • You might take a look at this section,

http://www.nasg.com/afdb/show-airfoil-e.phtml?id=1187

      • , since it was specifically designed for sailing hydrofoils.
      • The main benefit of a cambered section over a symmetrical section is that camber shifts the section characteristics to a nonzero lift coefficient. Maximum lift is generally increased, and the minimum drag can be centered on the operating lift coefficient instead of zero lift. Of course, this means you also have to estimate what the operating lift coefficient is, and this will come from the foil loading (weight carried per unit area) and the speed.
      • The Hydronautics handbook on the AMV CD has an excellent chapter on foil sections and optimizing the foil span and planform.

[Date/Time=02-08-2003 – 2:15 PM]

Name:Tom Speer me@tspeer.com, [Msgid=374620]
Re; Surf Hydrofoil Project

      • The AMV CD referred to by Tom Speer is the collection of Advanced Marine Vehicle design documents available on CD-ROM from the International Hydrofoil Society at a cost of USD 5.00, including shipping worldwide. For details, see the IHS website at

http://www.foils.org/

      • . Note that IHS is very close to releasing a second AMV-CD with additional documents. The Hydronautics handbook is on the first (original) CD-ROM.

[Date/Time=02-09-2003 – 7:06 AM]

Name:Barney C. Black webmaster@foils.org, [Msgid=374969]
Re; Surf Hydrofoil Project

      • In my humble experience with playing with hydrofoil wave-riding vehicles, I’ve found that the most critical problems I’ve faced are related to stability and control. I’ve used both symmetrical and asymmetrical airfoil sections, but so far I’ve not been able to discern any significant difference in speed as I’ve been too busy with control issues.
      • The importance of the foil section also will also depend on your primary design goal. If your primary goal is pure speed (and you will be towed into a wave, as with the Air Chair-based hydrofoil boards under development by Laird Hamilton), then the section choice becomes more significant than if you’re interested in traditional surfing (i.e. paddling to catch the wave) and/or in maneuverability.

[Date/Time=02-20-2003 – 12:13 PM]

Name:Terry Hendricks thendricks@pacbell.net, [Msgid=381786]
Re; Re; Surf Hydrofoil Project

ViewThread

      • thanks a lot friend, im draving cad plans to my model, your help and experience is apreciate, regards from spain.
      • fernando palacio

[Date/Time=02-26-2003 – 4:44 PM]

Name:fernando palacio edreira armadillo@teleline.es, [Msgid=385452]
Re; Re; Re; Surf Hydrofoil Project

      • Please note that there is no need to post identical messages in each forum of the BBS. In the future, please select the one forum most appropriate for your message and post it there one time. Thanks!

[Date/Time=03-11-2003 – 12:49 PM]

Name:Barney C Black webmaster@foils.org, [Msgid=393772]
Stability of planing vessels

ViewThread

      • I am a student at Plymouth University (UK) and am doing a project on the stability of high speed planing vessels. Any suggestions? I need info! Thanks.

[Date/Time=03-21-2003 – 7:28 AM]

Name:Nick Farrer nickfarrer@hotmail.com, [Msgid=400452]
Re; Stability of planing vessels

      • I don’t know your exact interest, but if you’re good with the Internet, you’ll find it all. My favorite linear theory porpoising papers were by Peter Payne and Milton Martin. Some experimental work was done recently by students at USNA and in Korea. Lateral stability is a little tougher. Blount and a few others have looked at nonlinear effects. A good starting place is the old Peter DuCane book. We’ve been working on augmenting stability for small planing boats (like ferry ride control systems) here in the US. I can probably help you track down what you need.

[Date/Time=03-22-2003 – 12:14 PM]

Name:jim hynes jhynes@socal.rr.com, [Msgid=401113]
HELP ; how to build a hydrofoil boat

ViewThread

      • hi i am a student in the 9th grade. my partner and i are doing a project on mini hydrofoil boats for our science class. could you give us a list of materials and stuff to build a small hydrofoil boat, about 10×5 in.

[Date/Time=03-25-2003 – 8:05 PM]

Name:Jabari Gilkes greatone__316@hotmail.com, [Msgid=403010]
Plans and parts list for model needed

ViewThread

      • I presume you propose to build an operating, radio-controlled model hydrofoil as opposed to a static model that just sits on display. This sounds like a fun project, although there will be some costs associated with the control equipment. To get an overview of different models that other people have done, and also to get the names and email addresses of people who you might want to ask to advise you, please see the following pages on the IHS website:

http://www.foils.org/modelrc.htm
http://www.foils.org/gallery/models.htm
http://www.foils.org/linksout.htm#plans

      • For a good example of a motor-powered model hydrofoil boat, see Graham Taylor’s website at

http://www.home-taylor.freeserve.co.uk/content/rapier%20page.html

      • For a good example of a sail-powered hydrofoil boat, see the 750mm sailing yacht model website at:

http://www.home.aone.net.au/cybernautics//750.html

      • After you are successful with your model this year, you may want to build a hydrofoil that you can actually ride in for next years project. There are plans available in back issues of Popular Science and Science and Mechanics. The May 1960 issue of Popular Science has plans for a 4′ x 8′ wooden boat with wooden foils. The June 1960 provides mounting instructions to add the foils from the prior month’s issue to any existing boat up to about 16 feet.
      • The Feb 1960 issue of Science and Mechanics has plans for foils made of steel frames and fiberglass foil surfaces. The following issue (Apr 1960) has plan for building a small runabout that you can add the foils to.
      • For information on these magazines and suggestions where to find copies of these old issues, see our page at:

http://www.foils.org/popmags.htm#hob

      • Hopefully that information is of some use to you. Good luck on your project.

[Date/Time=03-26-2003 – 5:07 PM]

Name:Barney C. Black webmaster@foils.org, [Msgid=403688]
re; rc sailing hydrofoils

      • Barney, he might also check out:

www.microsail.com

      • for pictures ofour F3 the worlds ONlY production sailing hydrofoil multihull. We are also about to introduce the microMOTH a 36″ radio controlled MONOHULL foiler…..
      • I’m also willing to answer any questions at all. He might also check out:

www.rcmultihulls.com

      • a site that has several articles about foils on RC sailing hydrofoils.

[Date/Time=03-27-2003 – 8:03 AM]

Name:Doug Lord lorsail@webtv.net, [Msgid=404079]
Les Voiliers a Hydrofoils

      • Deleted by request 091101

[Date/Time=03-29-2003 – 6:31 PM]

HYSWAS Senior Design Project

      • I am currently working with a team on the design of a working HYSWAS model for a senior design project at Florida Atlantic University (FAU). Our team needs information on hydro coefficients so we can run computer simultions to find out how much hp will be needed to generate enough speed to plane. If you have or would like to share any information that would be great.

[Date/Time=10-13-2003 – 11:42 AM]

Name:Roger Moore dakine42007@hotmail.com, [Msgid=524345]
build working model foil for science fair

ViewThread

      • I am in 6th grade and I am building a small working model of a hydrofoil craft for the school science fair. what advice do you have on things like what material to use, where i could find a good engine, the simplest design that will work.

[Date/Time=01-06-2004 – 11:54 PM]

Name:James Cobert beth_cobert@mckinsey.com, [Msgid=567742]
build working model foil for science fair

      • Hi James,
      • This sounds like a very nice project to work on. Do you plan to make the model radio controlled or “free running”?
      • I would recommend that you make a model driven by an electric motor rather than a petrol engine. These are more clean and quiet and will start easily. With a fully charged NiCad battery pack, such a model should run for 10 minutes or so if built light and well.
      • The hull could be built of thin plywood or balsa wood as these materials are easy to work with. If you use balsawood, make it at least 3mm thick. Be sure to seal it well with paint or varnish to ensure it does not get waterlogged.
      • I would recommend building a model based on the full scale Supramar / Rodriquez PT 20 design. The reason for this is that:
      • 1. The hull is quite a straightforward shape.
      • 2. The foils are of a surface piercing type, so the model should naturally run well while foilborne without wanting to tip over in any direction.
      • 3. This design has a single propeller mounted behing an inclined propeller shaft. This means you only need to buy one motor etc and the driveline is straightforward.
      • You can get away with a 2 channel radio control system for a hydrofoil model. One channel is for controlling the motor speed (or simply on and off) and the other is for controlling a rudder.
      • You can build the foils of hardwood if you are not easily able to work with something stronger like aluminium.
      • There are several photos of the PT 20 in our photo gallery so you can get an idea of how that hydrofoil looks. There are also a variety of photos of hydrofoil models in the photo gallery.
      • Also, plans to build a PT 20 model were once distributed by a company in Europe. That design was intended to be propelled by a petrol engine but could be converted to electric power instead. If you look through the archive of old posted messages on this website there are more discussions of radio controlled hydrofoil model building including more details of the above plans.
      • If you let us know how big you would like to make the model and how much time and money you are able to spend on this model, then possibly we can give more advice. Have you built any radio controlled boat or aircraft models before or is this all new to you?
      • Hope this helps in the meantime.

[Date/Time=01-07-2004 – 8:19 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=567827]
build working model foil for science fair

      • James,
      • I just had an afterthought that you can also look at the articles on building hydrofoil models which are regularly featured in the free on-line magazine “Classic Fast Ferries” produced by Tim Timoleon. The address is:

http://www.classicfastferries.com

      • The most recent issue includes two different models of the PT 50 design, one of them was once sold as a kit. The PT 50 was a larger twin engined design based on the PT 20 which I reccommended you could build.

[Date/Time=01-07-2004 – 8:35 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=567836]
build working model foil for science fair

      • As a science fair project, I recommend you make a long-ish tank with some plywood and 2×6’s, lined with a plastic sheet. At the end, put a pulley with a string that goes from the bow of your model to a weight. You may need to have a vertical frame at the end, too, with a second pulley so the string goes from the model to the first pulley, up to the second, and down to the weight. This will let the weight drop far enough to pull the boat down the whole length of the tank.
      • With this system, you can release the weight and time how long it takes to pull the model down the tank. The weight times the height it drops provides a known amount of energy and thrust on the model. So the faster the model goes, the less drag it has.
      • Make a series of runs with different amounts of weight pulling the models, recording the time required at each weight. If you use a water bottle as a weight, you’ll have to carefully measure the weight or the amount of water in the container each time. If you use solid weights, you can measure them once and reuse them. Plot the drag (amount of weight used to pull the model) versus speed (distance traveled divided by the time) to see that relationship. Then repeat the whole series of tests with a different model. With this simple tow tank, you can compare boats with and without hydrofoils and different kinds of hydrofoils.
      • Alexander Graham Bell did experiments like this, pulling his hydrofoil models behind boats. Go to

http://bell.uccb.ns.ca/agbi_docs_frm.asp

      • and select “Beinn Bhreah Recorder”, Volume 12, page 366b and then click through tne next several pages.
      • The report that follows the pictures gives an interesting view to how research is really done. Compare the idea at the end with the report by Bell’s chief engineer, Baldwin, in Volume 23, page 49 of Bell’s HD-4 hydrofoil. There you’ll see the final result that came from the idea in the sketch.
      • Other Bell hydrofoil model experiments are in:
      • Vol. 10 pg. 347 – 365
      • Vol. 12 pg. 363a – 366b
      • Vol. 13 pg. 32 – 33
      • Vol. 9 pg. 75a – 77b
      • Bell also tested a water ski-like model (Vol 14 pg 85a – 86c, Vol 14, pg 228a – 229b; Vol 14, pg 398a – 401b) that would be a good model for you to test for comparison with a hydrofol.

[Date/Time=01-11-2004 – 11:05 PM]

Name:Tom Speer me@tspeer.com, [Msgid=570036]
build working model foil for science fair

      • Thanks very much for your suggestions, which were really helpful. If you don’t mind, I still have some questions about how go ahead with the experiment that you describe.
      • 1. The Boat/Foil:
      • Do you have any ideas about a very simple model boat to which I can attach the foils? I would prefer to buy a boat or make a model from a kit since that would be easiest. I tried the hobby shope where I live but they didn’t have any. I have seen some models on the internet for small wooden boats about 8″ long and 3 ” wide. Would it be possible to attach hydrolfoils to a boat like this one? what shape boat should I look for? Or, do you have suggestions about very simple plans for boats/foils that I could build? Also, materials for constructing the hydrofoils
      • 2. The Tank:
      • I liked your suggestions about the plywood and plastic sheet. What dimensions for the tank would work in terms of length? How deep should it be? would the 2×6 pieces be for the sides or what else might work. For the frame, it sounds like I should attach a vertical piece as the end as the anchor for teh second pulley. If you have any more specific ideas here, that would be great.
      • Thanks so much for all of your help — I will let you know how things turn out.

[Date/Time=01-13-2004 – 11:57 PM]

Name:James Cobert beth_cobert@mckinsey.com, [Msgid=571144]
build working model foil for science fair

      • You might try building a simple catamaran from model rocket tubes and balsa nose cones. Add a skeg to the stern of each hull to make it track straight. This has the advantage of being light and stable.
      • You could make the hydrofoils out of balsa, or spruce (stronger than balsa), or sheet metal. Or a combination of all 3. You could even cut strips out of a Coke can and glue them to balsa struts with epoxy. You’ll find the aluminum can to be somewhat brittle, but you can cut it with a pair of scissors. You may find plastic extrusions that could be modified into hydrofoils, too.
      • Go to a hobby shop and use your imagination – lots of model airplane or even model railroad stuff could come in handy. If there’s a model airplane club that meets near you, I bet you can find lots of advice and help there, too.
      • Ideally the tank should be as long as possible, but is limited by practical considerations. One is the height you can drop the weight. Most ceilings are 8 ft high, so the tank would be less than 8 ft long. You could double the distance the weight will pull the model by putting a pulley on the weight, anchoring one end of the cable to the top of the frame, and using the other end to pull the model. This will mean the tension on the cable is half the driving weight, but it will pull it twice as far.
      • So one way to make the tank might be to take a piece of 4’x8′ plywood (1/2″ thick, maybe?), rip it in half to form two 2’x8′ pieces, and hinge them end-to-end. That would make a 16′ tank that you could fold into 8′ for transport when you take the plastic off. With the 2×4 or 2×6 walls, the tank would have to fold bottom-to-bottom, of course, with the walls on the outside. The tank would sit flat on a couple of folding tables.
      • I’ll leave it to you to figure out how much weight would be on each table, based on the volume of water in your tank, and decide if that’s too much for the tables or not. The tank can be drained with a garden hose used as a siphon. Or you can get a waterbed kit for filling and emptying it. These often have a venturi pump that can suck the water out faster.

[Date/Time=01-25-2004 – 8:47 PM]

Name:Tom Speer me@tspeer.com, [Msgid=578107]
Student project

ViewThread

      • Hi,
      • I am currently studying for my degree in marine technolgy at the university of plymouth.  For part of this degree I have to do an honours project which involves looking into an aspect of marine design.  I have chosen to look into how t-foils effect the performance of small 14ft racing sailboats, and in particular how they help stop the pitching of the boat.
      • Hence I would be very gratefull if you could send me any information on this subject, and in particular any calculations and foil tests that you have done.
      • Thank you for your time.
      • Matt Chapman

[Date/Time=02-26-2004 – 11:12 PM]

Name:Matt Chapman matthew.chapman@students.plymouth.ac.uk, [Msgid=604277]
How foils work?

ViewThread

      • I am a student in year 10 currently doing a project on hydrofoils and building a model. I am having lots of trouble finding any research on how a hydrofoil works and how it creates lift. I know it resmbles an aeroplane wing but i am having trouble explaning how the lift is created. Iff you could help me out by maybe explaining or providing me with some information it would be greatly appreciated. My assignment is due in 2 and a bit weeks so any help will be greatly appreciated. Thanks, Chris

[Date/Time=02-26-2004 – 11:18 PM]

Name:Chris Phillips pooman45@hotmail.com, [Msgid=604282]
Re; Student project

      • Please check our IHS web site section on sources and discussions on the subject. You should find what you need there.

http://www.foils.org/texts.htm

      • If you need more detail, try our CDs which have lots of technical papers on the subject.
      • Bill White

[Date/Time=02-27-2004 – 11:00 AM]

Name:Bill White whitewn@speakeasy.net, [Msgid=604482]
Re; How foils work?

      • Please check our IHS web site section on sources and discussions on the subject. You should find what you need there.

http://www.foils.org/texts.htm

      • Also try our page on the basics of Hydrofoils at

http://www.foils.org/basics.htm

      • Good luck
      • Bill White

[Date/Time=02-27-2004 – 11:02 AM]

Name:Bill White whitewn@speakeasy.net, [Msgid=604485]
Science Fair project on hydrofoil boats

ViewThread

      • My son is doing a science fair project on hydrofoil boats. We are looking for a video and model we can purchase. We thought you could tells us where we could purchase them.
      • Thank you Janet Harrison

[Date/Time=02-28-2004 – 6:51 PM]

Name: Janet Harrison JSHtennis@aol.com, [Msgid=605177]
Science Fair project on hydrofoil boats

      • Hello Janet,
      • Unfortunately there are few hydrofoil model kits available these days as they are all out of production. One option to track such a model down would be to keep a look out on Ebay online auction site for one to be offered. This may not be a practical proposition for you.
      • For a videos on hydrofoils, follow the link “Books, Videos and Popular & Trade Magazines” from the main age of the IHS website and see what is listed. One video which has a good overview of hydrofoils is listed as follows:
      • [13 Oct 03] The new Discovery Canada video Hydrofoils: Flying on Water is available in VHS format for $29.95, including shipping and handling within the U.S. and Canada. IHS assisted in compiling historical photos and video clips for this production. More details and a description of the video are on the internet at

www.thesea.ca/hydrofoils.htm

      • . To purchase a copy of the VHS tape, send a cheque or money order to: Lucy Decoutere; 1657 Barrington St., Suite 138; Halifax, Nova Scotia; Canada B3J 2A1; Tel: 902.446.3414; Email:

lucy@thesea.ca

[Date/Time=03-06-2004 – 7:47 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=608656]
Lift off Speed?

ViewThread

      • Hello,
      • I am building one man hydrofoil boat, and I am planning to put hydrofoils
      • on a rowing boat! I am wondering what speed I need to get the boat out of
      • the water. Doe sit depend on the size of the Hydrofoil. I would like to
      • get the boat out of the water at the slowest possible speed, I hope this
      • is possible.
      • Many Thanks
      • Philip Rage

[Date/Time=07-12-2004 – 8:48 PM]

Name:Philip Rage philip.rage@radley.org.uk, [Msgid=678447]
Re; Lift off Speed?

      • Hello Philip,
      • I suggest you contact the webmaster at the HPMV website with this question, also see the information available on that site:

http://www.humanpoweredboats.com/

      • I note that all the hydrofoil-equipped rowing shells seem to use a cycle or pedal-based propulsion system rather than oars.
      • The IHS website has several links to human powered boat websites:

http://www.foils.org/linksout.htm#human
[Date/Time=07-13-2004 – 5:02 PM]

Name:Barney C Black barney@alum.mit.edu, [Msgid=678957]
model rocket boat

ViewThread

      • Im currently working on a model rocket boat project for an internship. we are given several pieces of aluminum, an estes d-12 model rocket engine, and a few requirements like it cant get airborn. the object is to make it go the farthest. I was interested in puting a hydrofoil on it to reduce drag from the water and increase distance. I dont really have any experience with hydrofoils though. Is the idea feasable with such a small boat? will it work with a rocket engine? will it be stable with no remote control? Anything will help, thanks

[Date/Time=07-14-2004 – 1:22 AM]

Name:Alan alancarr3@hotmail.com, [Msgid=679221]
Re; model rocket boat

      • The difficutly you have, is testing the boat prior to an actual rocket powered run. It took two non radio controlled “crashes” for me to get a rocket car to run straight. And these runs, it was radio controlled. Not that you could steer it during a run, but it did give us some measure of steering during a run. See this link.

http://mysite.verizon.net/res1tf1s/sitebuildercontent/sitebuilderfiles/rocketcar2.mpg

      • What should be noted, is that from the start, the nose was weighted with at least 150- 200 grams of lead to keep the nose down. The roll over you see in the first run is due to too large a drag chute.
      • The point I try to make here, is that you will need to run the boat several times to get the boat trimmed. Especially on hydrofoils.
      • In a hull born boat, The rocket at a slight down angle and a skeg at the back of the transom would probably be enough to keep the nose down and fairly level. Once you lift the boat out of the water on a foil, the dynamic will change completly. If you keep the foils low, and can do some testing using an electric motor, you probably have a good chance of succeeding.
      • Safety first always. Once a rocket is lit it won’t stop.
      • Aimee Eng

[Date/Time=07-17-2004 – 12:26 AM]

Name:Aimee Eng umi_ryuzuki@hotmail.com, [Msgid=680936]
Re; model rocket boat

      • I have contributed the report to the model R/C hydrofoil. It got interested in your model rocket hydrofoil. Would you teach [ you ] me the model rocket hydrofoil under plan in detail? Then, I think that I can provide you with the idea of a useful hydrofoil. It is the size of * rocket engine, and a weight * injection thrust, * injection time and the above item that I want to know. I wait for a reply. Please see the BBS contribution report of my model R/C hydrofoil.

[Date/Time=07-17-2004 – 12:44 AM]

Name:yoichi takahashi skyex@triton.ocn.ne.jp, [Msgid=680941]

PRE 2002:

International Hydrofoil Society Correspondence Archives…

Hydrofoil-Related Student Projects
Descriptions, Advice, Sources of Information, and Requests For Help
(Last Update: 11 Nov 03)See also the BBS archive: “Build Your Own Hydrofoil
Go to the Posted Messages Bulletin Board(BBS) for more recent messages

 


Notice: IHS receives many cryptic inquiries to the effect of, “Send me information about hydrofoils.” This is No Good! To help you, we need details… power or sail, large or small, surface piercing or fully submerged, recreational, commercial, or military… stuff like that! Oh, yes, and please remember to tell us your name! Thank you, thank you, thank you.

Suggestions: Describe your project and let us know your schedule and deadlines. Also, please ask specific questions so we can forward your request to experts who may have an answer! Feel free to contact any of the students whose inquiries appear here… their projects are probably finished now, and they could help you with “lessons learned.” Finally, click on some of the other FAQ links such as the one on Hydrofoil Texts and Sources of Design Information.


Hydrofoil Rise and Fall

[2 Apr 02] I am currently doing an assignment on hydrofoils at Southampton Institute Of Higher Education and I was looking for information on the rise and fall of hydrofoils in commercial and military use, I was wondering whether you could send me the names of any other websites or reports on this subject. — Nicholas Hayles (nickhayles@hotmail.com)

Response…[5 Apr 02] Hydrofoils for commercial applications really ‘took-off’ in the late 50’s and into the 60’s and beyond. The decline in production has probably been since the late 80’s or early 90’s. You could track the production rates of different types of commercial fast ferries by consulting Fast Ferry International magazine which for many years has annually reported on production numbers of the different types of ferries, be they monohull, catamaran, hovercraft, hydrofoil, Surface Effect Ships, SWATH (these are usually slower) or hybrids of some form. Being a hydrofoil enthusiast, I wouldn’t say that hydrofoils have ‘fallen’, rather they seem to have gone out of vogue at the moment. I think they will make a comeback! My personal view on why they have gone out of vogue is that operators these days probably consider them to be complicated craft and a ‘simple’ catamaran or displacement monohull is easier to operate. The same can be said for Surface Effect Ships which looked like they would become the ‘fast ferry of choice’ in the 80’s and 90’s (many designers and shipyards had proposals available) but apart from a number of sales, nothing substantial eventuated. One of the folk at an Australian shipyard that had built a limited number of SES once told me that operators would prefer a ferry that is like a ‘truck’ rather than something that is high tech. In other words, they are looking for simplicity and reliability in operation. The tricky thing is to convince operators that hydrofoils can offer fuel savings over some other types of fast ferries of similar capacity and speed and that any additional effort to maintain foils is offset by the fuel cost savings. Unfortunately, I don’t have the hard evidence to demonstrate that myself as I am not a hydrofoil operator. Another thing I find interesting is that many conventional catamarans and monohulls are having hydrofoil based ride control systems added to them to improve their seakeeping performance in waves (and so achieve reduced seasickness of passengers). These ride control systems seem to be accepted as not adding complexity to ‘simple’ catamarans and monohulls even though they are essentially just scaled down versions of the same types of foils that support pure hydrofoil craft. In fact, some designers offer catamaran designs with more substantial hydrofoil units fitted between both hulls to partially support the weight of the craft as these are stated to reduce the total resistance for a given displacement and speed and so reduce fuel consumption. Apart from the above, it would probably be fair to say that the manufacturing cost of hydrofoils (and SES and hovercraft for that matter) would be higher than for comparable displacement vessels such as catamarans. An operator would therefore need to invest more up front in purchasing the craft before the potential through life cost savings are achieved. If you would like to read some of the views on the future of hydrofoils while they were first becoming popular, I would recommend you hunt down journal papers written by Baron Hanns von Schertel (see IHS website for more details of this hydrofoil pioneer). These usually appeared in the Journal “Hovering Craft and Hydrofoil”. One had the title “Future of the Commercial Hydrofoil” but I don’t have details of which issue that was in, but it would have been the late 60’s or early 70’s. There is an interview with him in the October 1971 issue (Volume 11, No.1) with the title “The views of Baron Hanns von Schertel” where he also recalls some of the trials and tribulations of the development of hydrofoils. — Martin Grimm (seaflite@alphalink.com.au)

Student Project – Lateral Stability of Surface-Piercing Hydrofoils

[31 Mar 02] I am a final year student of Naval Architecture in Australia and am currently involved in doing a research thesis on lateral stability of SP hydrofoils. — Nigel Lynch (masterlynch@hotmail.com)

Response…[27 May 02] Are you a student at University of New South Wales in Sydney or at the Australian Maritime College in Launceston? I suspect the former because I first proposed a research project on this topic to Phil Helmore about two years ago, and I know he has offered it to students as a thesis option this year. I am of course delighted that someone has taken this project on if my assumption is the correct. Regardless, I would be keen to give you some suggestions on what can be done to make it a really interesting project for you. Anyway, I think you are off to a good start having found the IHS website. We probably have more hydrofoil information and references than any other single source. If you look under the section “Technical References, Articles and Books” and go to entry #86, you can download a short article I wrote on the subject for the IHS newsletter a few years ago (following details extracted from website): Grimm, Martin, “‘Transverse Stability of Surface Piercing Hydrofoils,’ IHS Newsletter, Summer 1998, pp. 7-9. The stability criteria presented in the IMCO Code of Safety for Dynamically Supported Craft, now superseded by the International Maritime Association (IMO) High Speed Craft Code, provides an equation for assessing foilborne metacentric height (GM) of surface-piercing hydrofoils in the design stage. An alternative method which addresses several limitations of this equation has been implemented in a short computer program, and representative results for typical foil designs are presented. A more extensive assessment of the results, a source code listing, and example input files are available from the author to those willing to examine this subject in further detail and share their findings.” In closing, see the image of my model hydrofoil with a ‘test rig’ catamaran owned by a friend of mine (pictured). Actually, the catamaran has been used for solar boat races in recent years but is ideal for towing models. The idea was that this could be used to do experimental tests of transverse stability of the model while foilborne on a calm day. We just have not got far enough with the idea yet! Far more ideal of course would be to perform the tests in a towing tank! — Martin Grimm (seaflite@alphalink.com.au)

Student Project: Racing Hydroplane

[5 Mar 02] I am currently a student at Teesside University in England studying Computer Aided Design Engineering. As part of a project we have to improve on an existing hydrofoil design. The boat my team has chosen to improve upon is to be capable of racing in the 2002 Unlimited Hydroplane Series of which the boat MISS BUDWEISER is currently the title holder. Could you please advise me as to where I may find design specifications of such boats especially in relation to the cockpit area (safety) and the steering mechanism incorporated in the craft? — Ben Coward (bencoward1@hotmail.com)

Responses…[5 Mar 02] You have an interesting project, however our site is concerned mostly with fully submerged and with surface piercing hydrofoil designs. We have next to nothing on hydroplane racing craft. I am sending a copy of this response to Leslie Field (www.lesliefield.com/) and to Simon Lewis (www.simonlewis.com/) in the hopes that they can suggest a source the design specs you seek. You may have luck by contacting directly the racing crews of specific craft or the racing association. — Barney C. Black (Please reply via the BBS)

[15 Mar 02] The American Power Boat Association puts out all the specifications for the various classes of hydroplane racing crafts. MISS BUDWEISER is in the unlimited class. I believe they are presently headquartered in Detroit, Michigan. I had some discussion at one time with a former crew chief of a hydroplane racing team who wanted to put hydrofoils on the sponsons. I believe he proposed it to the APBA but was rejected at the time. — Sumi Arima (arimas1@juno.com)

Student Membership Requirement

[2 Feb 02] I have one doubt regarding membership, that is, for which kind of membership I should apply. Being a PhD student I am not sure if student membership can be applied in my case or it is reserved for undergraduates only. A practical question: does IHS issue some kind of “diploma” as a proof of membership (equivalent to RINA, SNAME, IMARE, ASNE…)? — Sasha Jovanovic (salespanac@serbiancafe.com)

Response…[3 Feb 02] Student membership is available to anyone who is a full-time student, from children up to masters and doctoral candidates. The idea is to reduce the price for people who go to school full time and therefore do not have a full time job. No proof of student status is required. Your word is your bond. All members receive a certificate of membership when they first join. — Barney C. Black (Please reply via the BBS)

Student Project – Foil History

[21 Nov 01] I`m a student in Spain, and I’m making my final project. I need information about: (1) History of Eppler foils and his geometry, (2) History of H105 foil, and (3) History of keels of windsurfer boats. Could you help me, please? — Beatriz Marco Burguete (beatrizmarco@hotmail.com)

Response…[25 Nov 01] Richard Eppler was a professor at University of Stuttgart, along with Wortmann and Althaus. You might say that Eppler was the theoretician, Althaus was the experimentalist, and Wortmann the applied designer because Wortmann designed many successful sections using Eppler’s computer code, and Althaus did the wind tunnel testing published in the Stuttgarter Profilkatalog. (Althaus, D., Wortmann, F.X.,’Stuttgarter Profilkatalog 1′, F. Vieweg, Braunschweig, 1981.) However, Eppler was more than just a theoretician, having designed the world’s first fiberglass sailplane, the PHOENIX. Try http://www.aae.uiuc.edu/m-selig/ads/airfoil_references.html for additional information. Together, the three of them revolutionized modern airfoil design and established the practice of using an inverse computer code to calculate the shape of an airfoil from its required aerodynamic characteristics, so as to create an airfoil precisely tailored for each specific aircraft design. The H105 section is my own design (data and coordinates at http://www.nasg.com/afdb/index-e.phtml). It started with correspondence between the late David Keiper and myself. I offered to design a section for Keiper and pay for the die if he would have extrusions made for use in his catamaran hydrofoil kits. I was looking to get some experimental feedback on the design. I intend to build an ocean-going sailing hydrofoil loosely based on Keiper’s WILLIWAW ( For details, see my paper: http://www.basiliscus.com/CSYSpaper.pdf), and I will probably use the H105 for my hydrofoils. The requirements for the H105 were:

  • to be able to operate at low Reynolds numbers (300,000 and above)
  • to be resistant to caviation
  • operate over a wider range of lift coefficients than the Eppler hydrofoil sections
  • to have minimum drag comparable to the Eppler sections

My first designs put too much emphasis on high lift. High lift is not as important to a surface-piercing hydrofoil because the craft can operate with a much smaller angle of attack range, changing wetted area to vary the lift instead of angle of attack. The H105 design specifically traded off some high lift performance for better cavitation performance. The good low Reynolds number performance was obtained by using a convex velocity distribution on the upper surface. This was tailored to control the movement of the laminar separation bubble. The result was transition from laminar to turbulent flow in the boundary layer via a short laminar separation bubble that moved smoothly to the leading edge as the angle of attack increased. This allowed long runs of laminar flow at low lift coefficients, but ensured that the boundary layer was turbulent at high lift coefficients, and eliminated the laminar separation which caused the sharp stall in the Eppler hydrofoil sections at low Reynolds numbers. Compared with Eppler’s hydrofoils, my section is slightly more prone to cavitation at medium lift coefficients, but has better high lift and low Reynolds number performance. At low lift coefficients and high speeds the performance is nearly equal between the two. See the CSYS paper for a more detailed comparison. The emphasis on low Reynolds numbers was so that I could build a subscale model of the cruising hydrofoil and still obtain valid data. A section that is designed for low Reynolds numbers will generally work well at high Reynolds numbers, but one can rarely operate a section much below its design Reynolds number range. So by designing a section that would be suitable for the model, I created a good all-round section is not as critical as the Eppler hydrofoil sections. — Tom Speer (me@tspeer.com) website: www.tspeer.com

Kart Engine Utility

[11 Nov 01] I am considering building a hydrofoil as a university project and I’ve already been looking into some of the practicalities. Today I have mostly been considering how to power a small hydrofoil and looking at lots of engine and propeller websites. One option I’ve been looking at is the widespread availability of Kart engines. Do you think a 28HP Kart engine could be geared down to provide propulsion for a lightweight hydrofoil say 12-15ft in length? It just got me thinking because kart engines are very lightweight and also surprisingly cheap. — Mark Landers (mark.landers@baesystems.com)

Hydrofoil-Assisted Take Off for Flying Boat

[1 Nov 01] I am student at the University of Southampton studying Aerospace Engineering. As part of our course we have been given a group project in which we are designing an amphibious flying boat. Our initial intentions were to design a 767 sized cargo plane. We then thought of adding a hydrofoil to reduce the takeoff distance. Having looked through your site we were wondering if you could provide us or direct us to where we could find some more detailed information such as different designs of hydrofoils and typical takeoff speeds of hydrofoils. — Andy Fidler (fidler81@hotmail.com)

Responses…[3 Nov 01] The most recent example of hydrofoil-assisted takeoff for aircraft that I know of can be found in Air Progress Magazine of Feb 1968. There is a cover photo of the magazine and an abstract of the article on Popular Magazines page. The article has some good photos and technical info. You may be able to find some additional info about other experiments of this type on the NACA website… they have archived many hundreds of technical reports that are searchable by key word. A couple of other sites with some history: “A History of Sea – Air Aviation: Wings Over the Ocean Part Three” by John M. Lindley and www.curtisswright.com/history/1908-1919.asp — Barney C. Black (Please reply via the BBS)

[11 Nov 01, updated 10 Mar 02] I am providing the details and a short summary of a paper on “Sea Loiter Aircraft: Papadales, Basil S. Jr. (DTNSRDC) ‘A Review of Sea Loiter Aircraft Technology’, AIAA / SNAME Advanced Marine Vehicles Conference, Arlington, Virginia, September 20-22, 1976. Paper No. 76-876. The interest in sea loiter concepts, namely aircraft that could float on the sea surface for extended period including in moderate sea state conditions, was prompted by their potential for extended time on station for such roles as Anti-Submarine Warfare (ASW), Command, Communications and Control (C3), and Strategic Deterrence. The paper reviews past work in the areas of take-off and landing hydrodynamics, sea loiter hydrodynamics (ie floating motion behaviour), and propulsor-water interaction (spray generated from aero propellers or jets). About two pages of the 11 page paper are devoted to reviewing previous work with hydroski or hydrofoil equipped sea planes. With the exception of the XF2Y-1 Sea Dart jet aircraft with hydroskis, all the other hydroski or hydrofoil test aircraft appear to be those described in the February 1968 issue of Air Progress you have already noted. The paper mentions hydroski tests on a Lake LA-4 amphibian aircraft (see attached photo) in which four configurations of hydroski were tested, and it is in these tests that it was found that the aircraft could operate in waves three times higher than the basic hull. The first modern application of supercavitating hydrofoils to a seaplane was on a Grumman JRF-5G Goose (see attached photo) which utilised the Grunberg foil configuration with the foil slightly aft of the aircraft centre of gravity and two small skis located forward of the bow. The skis served to trim the aircraft prior to lift-off and to prevent diving. The stainless steel foil had a loading of 1270 psf at full gross weight. Directional and lateral instability was encountered during planing and this created serious take-off problems. Further research on the concept was terminated. In 1966 the Thurston Aircraft Corporation modified a Lake LA-4 amphibian to employ a retractable supercavitating surface piercing hydrofoil. This had a loading of 3310 psf at full gross weight. The foil was a 6.25 degree aluminium wedge. It showed a 70% reduction in landing impact loads and a 30% reduction in take-off time could be gained with the foil and that it had a significantly better performance than any ski configuration. Other hydrofoil related references cited are:

  • ‘Preliminary Design Data for Water-Based Aircraft with Hydrofoils or Skis’, Martin Company Report ER 9433, June 1957.
  • Vagianos, N.J. and Thurston, D.B., ‘Hydrofoil Seaplane Design’, Thurston Aircraft Corporation Report 6912, May 1970.
  • Vagianos, N.J. and Rhodes, W.B., ‘Evaluation of the Hydrodynamic Characteristics of the JRF-5G Hydrofoil Seaplane’, NATC Technical Report FT2121-35R-65, July 1965.
  • Thurston, D.B., ‘Flight Test of the Hydro Research Vehicle HRV-1 Equipped with Hydrofoil No.1 on Strut No.2’, Thurston Aircraft Corporation Report 6702-3, February 1967.

— Martin Grimm (seaflite@alphalink.com.au)

LR-4 With Hydroski

JRF-5G with Hydrofoil

Planing Sailboard

[10 Aug 01] I am from the University of Natal and need assistance on the theory of planing. I am doing a dissertation on the hydrodynamics of planing sailboards. If you have any information on this it would be greatly appreciated. Would a copy of the 1994 Shanghai Conference proceedings be of any use? — Gordon Cook (981189683@stu.und.ac.za)

Responses…[10 Aug 01] Try the following two websites:

Tom Speer (tspeer@tspeer.com) website: www.tspeer.com

[13 Aug 01] Planing theory has been covered in depth by many papers authored by Dan Savitsky at Stevens Institute. “High Speed Small Craft” by Peter Du Cane (Temple Press, London – 1964) is a good reference. The Heller-Jasper paper on this subject is a classic (SNAME, late 50s I believe). Joe Koelbel has also published some good basic small planing craft design guidance – in papers and magazine articles. — Ken Spaulding (secretary@foils.org)

Patrol Boat Foil Design, Student Project

[15 Jan 01] I am a senior naval architecture student and for my final design project I am attempting to design a hydrofoil patrol boat. I was wondering if you knew of any papers on the design process on deciding foil shape, size, placement, etc. Thank you for any help you can give me. — Earon S. Rein, MIDN USN (m015346@nadn.navy.mil)

Responses…[15 Jan 01] I assume you are aware of the model of a HYSWAS design built by the Naval Academy and testing of same in the tank. See John Hill, if you haven’t. I was there last Thurs to see it running. The Hydronautics Report TR-463-1 we sent you should be good for a conventional hydrofoil. Hope you can work your way through it OK. Some years ago we did a design of a HYSWAS Patrol craft for the Coast Guard. It was about 235 tons with long range and excellent seakeeping characteristics. — John Meyer (president@foils.org)

[18 Jan 01] For my final year project at university I also worked on a patrol boat design but didn’t want to try to develop a hydrofoil design as a student because I thought it would be too hard to do! I left my hydrofoil interest for a separate thesis project that looked specifically at the heave and pitch motions of a surface piercing hydrofoil in waves. In hindsight, I wish I did do a hydrofoil design as a project as well! At the time I worked on the thesis I collected a number of papers dealing with general hydrofoil design and foil layout. While I didn’t need to apply most of those papers in my studies, here are some which may be useful for your design project:

  • Walderhaug, H.Aa., “A note on seakindliness of hydrofoil vessels as influenced by foil characteristics and centre of gravity position.”, I believe this was published in International Shipbuilding Progress but can’t be sure.
  • Pascoe, Norman P. and Hobday, A.W., ‘A theoretical study of the relative behaviour of three fully submerged hydrofoil configurations with regard to dynamic longitudinal stability and incidence-cavitation boundaries’, Hovering Craft and Hydrofoil, Vol. 2, No.1, pp31-35, October 1962.
  • Jewell, D. A. “Hydrofoil Performance in Rough Water”, Paper presented at AIAA/SNAME Advanced Marine Vehicles Conference, San Diego, CA, February 25-27, 1974.

Before reading those more detailed papers, I suggest you get a good overview of general hydrofoil design considerations but also including foil size and layout considerations by looking though the following books or journals listed on the IHS website:

  • Hook, Christopher and Kermode, A.C., Hydrofoils – Without Formulae Series (No. 16?), Pitman Paperbacks, Sir Isaac Pitman and Sons Limited, London, 1967.
  • Du Cane, Peter High-Speed Small Craft , David and Charles (Holdings) Limited, Devon, 1974, Fourth Edition, Chapter 3, pp 12-54, Eames, M.C., “Principles of Hydrofoils.”
  • Naval Engineers Journal, Volume 97, Number 2, February 1985. ISSN 0028-1425. Published by the American Society of Naval Engineers, Inc. (ASNE). This special edition features comprehensive reviews of a range of “advanced naval vehicles,” including hydrofoils.
  • Crew, P. R., “The Hydrofoil Boat; Its History and Future Prospects.” Quarterly Transactions, The Institution of Naval Architects, Vol. 100, No. 4, October 1958 gives good background information.
  • Bakken, Sigmund and Merritt, Richard G., “Hydrofoils – ideal for the North Sea”, Navy International, Vol.82, No.3, March 1977 compares the seakeeping performance, namely sustained speed versus wave height, of hydrofoils with conventional naval surface ships.

There are also a number of previous questions and answers concerning foil design on the website which may assist you. Before considering the foil layout you also need to decide whether you want to develop a fully submerged hydrofoil design or a surface piercing design. The US navy hydrofoil developments culminating in the PHM were almost exclusively of the former type, though surface piercing hydrofoils were also operated by some navies mainly as coastal patrol craft. Examples of the latter are militarised Supramar / Rodriquez PT 20’s and also Chinese patrol hydrofoils. The Canadian ASW hydrofoil (items 13, 17 and 18 of the IHS website deal specifically with this) was more of an ocean-going surface piercing hydrofoil design. Surface piercing hydrofoil designs are generally naturally stable in heave, pitch and roll. Fully submerged hydrofoil designs are reliant on autopilot controlled flaps etc to remain stable. If you are seeking good rough water seakeeping characteristics, I would suggest you opt for a fully submerged hydrofoil design with an autopilot system for maintaining the attitude of the craft as these are generally regarded as having better seakeeping performance than similarly sized surface piercing hydrofoils. I don’t think you will be in a position to develop the autopilot design as part of the design project unless you are a real whiz kid. I think it would be sufficient to try to perform a resistance estimation for the craft from hullborne to foilborne condition as part of the project and assume that with a foil layout similar to other past fully submerged hydrofoils that it will somehow be possible to develop a satisfactory control system around it to keep the boat stable in waves. I don’t know what size or capability of hydrofoil you are thinking about for your project but if I were in your shoes, I would probably search for any literature on the USN PEGASUS class Patrol Hydrofoils (PHM) and adapt your design from that! After all, naval architecture is an evolutionary rather than revolutionary business! — Martin Grimm (seaflite@alphalink.com.au)

Follow Up Question…

[18 Jan 01] We were sort of toying with the idea of using supercavitating foils. Do any of you know where I can get some good information on supercavitating foil sections, or the design of supercavitating hydrofoil vessels. I don’t remember who asked, but I am pretty sure we are just doing our hull with FastShip and then doing analysis using NavCad. If you have a better suggestion (which can be handled at an undergraduate level) Id love to hear it as well. — Earon S. Rein, MIDN USN (m015346@nadn.navy.mil)

Responses…

[18 Jan 01] Two suggested sources:

  • Altman, R., “The Design of Supercavitating Hydrofoil Wings,” Technical Report 001-14, Hydronautics Inc., April 1968.
  • Martin, M., “The Stability Derivatives of A Hydrofoil Boat – Part II”, Technical Report 001-10(II), Hydronautics Inc., January 1963.

[18 Jan 01] The best info I’m aware of on supcav foil sections is the Carderock work in the 1970s on the “TAP-2” series of base-vented supercavitating foils. The work may have been done by Young Shen but I’m not sure. — Mark Bebar (bebar@foils.org)

The Future of Hydrofoils, Student Project

[12 Jan 01] I’m working on assignment on sea transportation. I really hope you will be able to help me out. What I was wondering is if you know who builds them, for whom, why do we need them, how are they made, where, when and the future? If you don’t know these things, do you any good sites that I could find them out? I have had horrible luck finding any information on both the Internet and encyclopedias. — Stephen Aiken <(saiken@attcanada.net)

Response…[12 Jan 01] I suggest first that you read the Regional Ferry Plan San Francisco Bay Area – Final Report. Also, I have sent you a paper called Defining a Ferry Business. These sources will give you the idea of the various issues involved and the analysis required. As to manufacturers, look on the IHS links page. Also look at the BBS page. In the USA the “buzzword” for transportation design is “Intermodal” i.e. in designing systems for the transportation of passengers and freight, one mode of transportation can feed into or draw from another… the routes are coordinated, and the interfaces are compatible and optimized. The USA funds research and demonstration projects to promote this concept. For more info, search the internet for “TEA-21” and “ISTEA”. If you have specific questions after reading these sources, please send them to me by email… the more specific you can make your questions, the better chance you have of receiving a useable answer. Also, look at the FAQ page devoted to student projects and feel free to correspond directly with anyone there you think might be of help to you. — Barney C. Black (Please reply via the BBS)

[18 Jan 01] I think there definitely are niches in which hydrofoils are the best craft for the application. The PHMs and other hydrofoils have shown how seaworthy and fast a small ship can be, and there will be future roles requiring such performance. Hydrofoil-assisted catamarans have shown how great a boost in speed can be obtained by adding a foil or two, as compared with just adding more power. The large number of surface-piercing hydrofoils operated on rivers and lakes in Russia and elsewhere have shown their comfort and reliability and good performance for a relatively low cost. It’s a bit of a mystery to me why more companies requiring these kinds of performance aren’t choosing hydrofoils. It’s probably due in part to a misperception that the cost has to be high, or that the hydrofoils and control systems must be complicated and therefore insufficiently rugged. At this point I think I see a new reason for considering hydrofoils: the growing concern about wake and wash produced by fast marine vehicles. I think hydrofoils can naturally produce less wake and wash, with their energy going mainly into underwater turbulence rather than into surface waves. (What the negatives may be from that I’m not sure — someone will think of a bunch, no doubt.) As for size, when we had our IHS panel discussion on the future prospects for hydrofoils, on the occasion of the IHS 25th anniversary, we reached a consensus that about 1500 tons seemed to be a practical upper limit. The upper limit on speed was set by foil cavitation and was thought to be about 55 knots or so, I think — although more recently there has been comment about 70 knots being attainable. — Bill Hockberger (hockberg@erols.com)

Model Sailing Yacht

[5 Dec 00] I am studying A-Levels in England at the moment and for my main project I’m building a model yacht (monohull). It is for a competition run by Strathclyde Uni. in Glasgow. There are few design restrictions and having spoken to the university I have confirmed that I can have a hydrofoil design. The restrictions that I have are as follows: Max LOA: 700mm, Max Draft: 300mm, Max Mast Height: 900mm, Min Mass: 2kg, Max Sail Area: 2000mm2, Keel bulb must be no more than 55% of total mass, must be monohull in the true sense of the word. I was thinking of having a ‘Y’ shaped keel with the diagonals as hydrofoils as I can only have one keel. What I need is, one: Will it work? and two, What kind of hydrofoils should I use for the best results, if any. — Philip Eltringham (phill_eltringham@hotmail.com)

Hydrofoil Construction Methods and Materials

[19 Nov 00] I was wondering if it was possible for you to send me some information on the construction of hydrofoils. I am doing a college term paper on the construction of hydrofoils and I am having some trouble finding information on that topic. I’m mainly looking for material specs, type’s of steel used to reduce weight, propulsion systems, foil systems, welding techniques, and hull considerations. I checked out the webpage and saw all the basic constructions but, if possible, I need some more specific information. — Matt Ferruccio (matt300@hotmail.com)

Response…[19 Nov 00] There are three pages of hydrofoil references accessible from the main page of our website: Technical References, Popular Magazines, and Popular Books. Most of these are out of print, but many can be found in libraries, book sales, online auction sites, especially Ebay. — Barney C. Black (Please reply via the BBS)

Student Project, Grade 12

[11 Nov 00] I was wondering if you could give my partner and me some tips or problems that might occur when building a hydrofoil boat. My partner and I are building a model hydrofoil boat for a physics project at school. It will be powered by 2 airplane engines. The hull structure is 36in long and 9in wide. It will be covered by thin sheets of wood, which will be coated with a special waterproof paint. Our hydrofoil concept design is a bit different compared to the one you did. There will be wings that extend directly from the port and starboard side. Directly below the end of the wings, will be the hydrofoils themselves. We are wondering whether this is a good design for a hydrofoil boat. How would this compare to other hydrofoil designs? — Chris Chang and Warren Pringle Grade 12 (Christopher_Chang@sac.on.ca)

Hydrofoil Amphibian – Student Project

[11 Nov 00] I am an graduate student from India pursuing a project on creating a amphibian craft… a vehicle that can move both in land and water. After a wide area of thought we have considered using hydrofoils with wheels at the bottom to enable us to have not only a large wheel clearance but also lesser drag in the water. I would like to know if there is any information regarding such a project anywhere else in the world. — Janak (ragus@netkracker.com)

Response and follow-up…[11 Nov 00] In the 1950s and 1960s, the US Army, Navy, and Marines all experimented with hydrofoil landing craft. Some of these were amphibians, specifically: the DUKW (by AVCO Lycoming and Miami Shipbuilding Corp for the US Army) , LVHX-1 (by AVCO Lycoming for the US Marines), and LVHX-2 (by Food Machinery Corp for the US Marines). Photos and more information about these vessels can be found elsewhere on our site, specifically in the History of Miami Shipbuilding Corp (MSC) and in the 1950s section of the Photo Gallery. — Barney C. Black (Please reply via the BBS)

[18 Nov 00] I would like to know what difficulties were experienced, for such crafts seem to have completely vanished. Then too, the 1960s is a very long time ago. The DUKW and the LVHX2 both seem to have either retractable hydrofoils or fixed ones, the wheels being extendable. I was wondering if we could place the wheels directly onto the hydrofoils. That would give the rider a perfect birds eye view . Although such a craft would not be very road friendly, they would definitely be very useful near the shore and on the beach. Another idea was to use non submerging fans, like the ones used on hovercrafts for propulsion. That would enable us to have free moving wheels. If the wheels were also submerged, there would be no necessity for separate rudders, the wheels may itself act as rudders. That will help simplify mechanics. For added stability at low speeds, we are also thinking about using a trimaran type hull. Please let me know what you feel about these ideas. Knowing what went wrong with the 1960s projects may help us. We hope to first start with making a scale model. — Janak (ragus@netkracker.com)

[19 Nov 00] The DUKW and LVHX craft were successful, although they were mechanically very complex and heavy for their payload capacities. Their amphibious capability is greatly exceeded by Air Cushion Vehicles (ACVs). Use of a trimaran hullform will add stability and reduce powering requirements. The design challenge is to obtain satisfactory cargo volume on a trimaran center hull that is more slender than a monohull of equal full load displacement. — Mark Bebar (bebar@foils.org)

Drag Testing of Hydrofoils

[21 Nov 00, updated 2 Dec 00] I am currently working on a project that deals with tests the drag produced by two different hydrofoils. One would be a conventional hydrofoil and the other would be modified so that an electric field is produced (interacts with ions in the water). I am a Georgia Tech Aerospace Engineering student. We are currently working on presentations in a fluids laboratory and everyone has been assigned a topic. My topic deals with these two hydrofoils and the goal is to come up with the best experimental technique and present it to the class. I found some info on the David Taylor Model Basins and they seem like a great idea for testing hydrofoils. It does not, however, elaborate on what type of measuring equipment is used. I’m only familiar with equipment used along with wind tunnels (i.e. LDA and PIV systems). Do you have any information on what equipment can be used to measure drag and investigate the boundary layer in water facilities? . I appreciate all of the feedback from members of your society and welcome anymore as it comes available. — Lauren Ihrig (Lauren_Ihrig@excite.com)

Response…[23 Nov 00, updated 2 Dec 00] I am very curious as to what prompted you to ask the question to include a hydrofoil with an electric field. There is good info on the reason for the electric field on a website entitled Control of Flow Separation in Weakly Conducting Liquids by Means of Electromagnetic Forces. The articles on the site show very good improvements in foil flow separation and therefore drag reduction, and lift improvement. Question is how practical is it, how much electrical power is required, and a host of other questions and clarifications. Have you access to any technical papers on theoretical or experimental work along this line? Are they available to us? Wouldn’t the tests have to be carried out in salt water? If so, tank tests are out. Testing of the foil system with and without the electric field would have to be done from an instrumented vehicle in a protected bay under calm conditions. Both lift and drag would have to be measured because the important issue is lift to drag ratio. This would not be the first time foils have been tested in open water. — John Meyer (president@foils.org)

[23 Nov 00] Just based on fundamentals, I suppose that there might be a problem. Lift and drag are functionally related so I imagine that if this EM field method would reduce drag it would also reduce lift. Jim King (KingJH@nswccd.navy.mil)

[2 Dec 00] I don’t know what is meant by an “electric field is produced (interacts with ions in the water)”. There’s been some work done on electromagnetic turbulence control where local EM fields have been produced that interact with the boundary layer (in sea water) to produce a Lorentz force. If done correctly this has been shown to lead to substantial reductions in friction drag. Scaling to high Reynolds numbers hasn’t been demonstrated although DNC computations suggest it should work. DARPA had funded some work in this area that was mostly proprietary. NUWC has done some work and could likely provide some published data that could be forwarded. In response to the comment about this affecting lift, the phenomena I described above all takes place in the boundary layer so lift is (to first order) unaffected. — Stan Siegel (stansiegel@aol.com)

Hong Kong Hydrofoils

[8 Sep 00] I have a couple of questions that your page does not answer. I’ve lived in Hong Kong, and I’ve seen the hydrofoil ferries, they looked pretty big (at least 500 tonnes) to me. Yet somewhere on the IHS page, it says those only weigh 35 tons. So I’m wondering if you know their displacement, and whether or not there had been a missing zero. With the current technology (composite material, new turbine engine, etc.), what is the maximum speed, weight and range for an hydrofoil? And what will the fuel economy of this ship be like, e.g. how many passengers can it take? (in other words, is it possible to build a 1000-tonne ship with max. speed of 60 knots that can go for 500 miles at 40 knots, and the ticket still cost half those of a jetliner? — Kenneth Chan (panzerkommand@hotmail.com)

Response…[8 Sep 00] Maybe the hydrofoil ferries you saw looked big, but they weren’t 500 tons. The largest hydrofoils to date were the Russian military built BABOCHKA at 400 + tons, and the US Navy built PLAINVIEW at 315 tons (long time out of commission). On the other hand, 35 tons would be a very small hydrofoil. You probably saw the Boeing built Jetfoil, which is about 100 tons. There are pictures on the IHS web site Photo Gallery. As to 1000 tons? That would take some doing and a VERY large investment. Also it would be more state of the art to stay with 50 knots and under. The 500 n miles at 40 knots should be no problem with hydrofoils 150 tons and up. Range is tied to payload or passengers carried, and one would have to set up a calculation to figure this all out. — John Meyer (president@foils.org)

Student Hydrofoil Project

[31 Aug 00] I am doing my Mech Eng. final year from V.I.T. under Pune Univ. As a part of curriculum, we have to present a seminar. I am very much interested in “Hydrodynamics” so I selected my topic as “Hydrofoils”. So could you please e-mail me the detailed info about Hydrodynamics giving stress on basics, mathematical relations, etc.? — Suraaj Doshi (suraaj_doshi@rediffmail.com)

Observations About Marquette’s Solar Powered Hydrofoil

[6 Mar 00] I was at the Solar Splash competitions against the Marquette boat. It was a good concept and based off of one of the entries by Kanazawa Institute of Technology, Japan. The only ironic thing is that the boat did better without the foils than with them. I have seen them race that boat 4 times and every time they had the same problems, dynamic stability when on foil. On the flip side the Kanazawa boat had a stability system that was rock solid. As a monohull alone the Marquette boat did fine though, in endurance. Most of the slender monohull types didn’t fare well in the sprint competition. If you want the hands down overall best design look at the KIT boat. Check out the Solar Splash Site . Over all, Marquette has probably one of the better all around teams at the competition. They regularly support multiple boats at the competition. Something that no other school does on a regular basis. Their entire university on the whole does a great job supporting the tech project cause. The tech teams are an active part of their curriculum. They are also one of the major reasons for the existence of the competition as they have been the host of the event since its inception. — Anthony Scott Daniels [adaniels@engin.umich.edu]

Cavitation

[25 Feb 00] I’m a French student working an a project, and I’m searching information about the phenomenon of cavitation or ventilation that occurs when a boat lifted with foil goes fast enough. Is there any solution for those problems, or could anyone tell me something about the subject? — L. Pério (loicmush@easynet.fr)

Spanish Student Develops a Project

[18 Feb 00] I am a Spanish student of naval engineering, and I want to do my final degree project about a hydrofoil. But I don’t know how and where I can start to do it. Could you guide me in this work? Could you advise me how I can do it and from which books can I get this information? — Belen Vega Mesa (bunny_d@email.com)

Response…[18 Feb 00] Please spend some time exploring our website, including the sections on links, references, and frequently asked questions. Then, if you have specific questions, IHS can find a better answer for you. Your question is so general that I can provide no better answer. After all, a hydrofoil could be a radio-controlled model weighing a few pounds up to a ferry or warship weighing hundreds of tons. Choices of power range from human-powered, to motor driven, to sail powered. As you realize, there is a variation in the information needed, depending on details of the hydrofoil that interests you. Note also that student membership in IHS costs only $US 2.50 per year. Click Here for information on how and why to join. — Barney C. Black (Please reply via the BBS)

Solar Powered Hydrofoil Design Info Wanted

[19 Jan 00] I am a senior engineering major at Cedarville College. Part of my senior year is being devoted to developing a hydrofoil system for a solar powered boat. I am trying to research the pros and cons of a fully submerged system versus a self-stabilizing design. My Senior Design Team is modifying a 19′ canoe type hull to enter the Solar Splash competition. Our hope is to put hydrofoil on the boat in a manner that gives us the least amount of drag, adequate maneuverability, and good stability. Let me clarify me design constraints: Directly from the website: SOLAR SPLASH is the World Championship of Solar/Electric boating. It is an international intercollegiate competition which takes place over five days. The first two days are Technical Inspections and Qualifying and the final three days are on-the-water competitions. Points are awarded in 6 events including the newest which is called the SOLAR SLALOM. The various events stress system design and both short distance speed and long distance endurance. The Event this year will be held in New Orleans, Louisiana. SOLAR SPLASH is a practical educational experience which helps to develop teamwork and inter-disciplinary skills. In recent years, a few highly qualified High School teams have joined the Event as a natural educational path from secondary school to college. The Event combines the fun of competition with education in a way which is not a major disruption to the student’s academic schedule. The project can be accomplished at a relatively low cost. Feel free to look around on www.sunrayce.com for information about solar splash as well as other competitions. You can also check out www.cedarville.edu/student_org/solsplsh/ and find out about Cedarville’s past team and sponsors. It has not been updated for this year yet (2000 team). Would you be able to provide me with any information about various design concepts and their various characteristics? Perhaps there is a website featuring your papers and articles that I could reference? I would be grateful for any aid that you could provide. — Derek Chandler (S1178082@cedarnet.cedarville.edu)

Response…[21 Jan 00] I strongly recommend a self-stabilizing (surface piercing) foil system. Fully submerged requires technical sophistication (height sensors and automatic control system) that are not warranted for a recreational hydrofoil application. — Mark Bebar (bebar@foils.org)

2nd Response…

[21 Jan 00] I am afraid I must respectfully disagree with Mark Bebar here. Fully submerged hydrofoils need roll control and height control systems, but control systems are now so small and cheap that I feel that the benefits outweigh the costs. Fully submerged hydrofoils have better seakeeping than surface-piercing systems. On surface-piercing hydrofoils it is often necessary to have the foils set very far apart to give enough roll stability, while fully submerged foils can often be kept within the hull width. I would like to know more about what sort of boat you will be making. I think that one of the biggest problems will be getting enough power to overcome hull drag at take-off. Here the foil design is of little importance, except in the take-off speed required. — Malin Dixon (gallery@foils.org)

3rd Response…

[18 Feb 00] I worked on the Massachusetts Institute of Technology DECAVITATOR project, and I just wanted to respond to some of the questions that were being raised.

  • We tried for 2 years to use a surface piercing V foil on our project. The obvious advantages of this configuration are automatic depth and roll stability. However, we found that there was no way to control ventilation. We tried fences and dramatic sweep angles with no avail. If you have lots of power to spare, then just plan on the foil cavitating all the time. Of course, with human power, we didn’t have this luxury. We ended up with a large and small foil directly under the pilot. The large foil could be retracted at higher speeds.
  • Pitch stability came from the skimmer/small horizontal surface in front. Having one on each pontoon gave us enough roll stability by required serious bracing to keep the pontoon/cockpit frame rigid enough. The pilot controlled depth with a lever that set the angle of attack of the main foil.
  • We used a 3-axis CNC machine to make our foil molds. The foils themselves were solid carbon fiber.
  • Sizing the foils is pretty complicated. You have to be able to go fast enough to ‘take off’, but you don’t want them so big that your top speed suffers. There is a lot more information about our design available at: http://lancet.mit.edu/decavitator/.

I hope this helps. — Marc Schafer (spaceboy@sgi.com)

More Responses…[1 Mar 00] Regarding difference in surface-piercing foil effects on propulsion: This of course relates to lift/drag ratio for the particular size foils you would be using and the speed you will be running at. I and most of the hydrofoilers have dealt with much larger weights (like tons instead of pounds) than you are concerned with. There is an impact of the small scale you are designing with which I have had very little experience, but you can probably expect a small larger difference in power required from the surface-piercing foil. I would still like to know how much power you expect to be able to put into an electric motor from the sun. What efficiency do expect from the motor and prop? What is total weight of craft? Will it be manned? How fast do you expect it to go? It sounds like some students worked on this before, so you should have this information. — John Meyer (jmeyer@erols.com) ; [1 Mar 00] I would intend to agree with John on drag differences – it will depend on the number of elements in the surface piercing foil geometry. Doing a quick wetted area comparison might tell you something. A fully submerged system will generally yield a higher aspect ratio foil overall which should have a better lift/drag ratio. — Mark Bebar (bebar@foils.org)

Follow-Up Question…

[18 Feb 00] Would a hydrofoil system consisting of a fully-submerged rear hydrofoil and a surface piercing front foil be subject to porpoising? Would the surface-piercing foil naturally damp that out? — Derek Chandler S1178082@cedarnet.cedarville.edu

Responses…[18 Feb 00] I see no reason that such a system would be prone to porpoising. There will be an influence based on the weight distribution. Will you have an airplane configuration with a majority of the craft’s weight on the forward foils or a canard arrangement with most of the weight on the aft foils? One of the issues with an airplane configuration is making sure the aft system has enough weight on it to keep the foil fully loaded. Also, how do you intend to maintain control of the aft foil submergence? — Mark Bebar (bebar@foils.org)

[18 Feb 00] I realize this is a far cry from a solar powered hydrofoil, but you might find it interesting to know that a combination of surface- piercing and fully-submerged foil has been done before – by the Russians. Here is an extract from my book, Ships That Fly about the SARANCAHA. I’m also attaching a two-view drawing. However, for a solar powered hydrofoil with severe weight limitations, a surface-piercing system for and aft (without the need for an automatic control system) would be preferred in my mind. Please tell us more about the size of the vehicle that you plan to build. How much power are you counting on from the sun? We would like to hear more about the project which might make a good article for the IHS Newsletter. — John Meyer (jmeyer@erols.com)

[25 Feb 01] As well as the large Russian SARANCAHA hydrofoil, towards the other end of the size scale the 11.45m long Supramar PT 4 hydrofoil with a passenger capacity of around 12 was another example of a hydrofoil craft with a surface piercing bow foil and fully submerged aft foil. There is a photo of one on the IHS website. — Martin Grimm (seaflite@alphalink.com.au).

Student Project in Glasgow

[24 Dec 99] I am a student of Naval Architecture at the University of Strathclyde in Glasgow, Scotland. My current final year project involves the design of a detachable hydrofoil kit for the Hobie 16. I wondered whether you currently have overseas members, and also whether I would be able to gain anything toward this project by joining the International Hydrofoil Society? Furthermore, I wondered if there may be any opportunities opened up by joining the society, for work as a trainee naval architect when I graduate, with any companies currently involved in the design and/or production of sailing hydrofoils? I also hope to be able to offer a new invention as an addition to the aeroplane configuration, which I am currently developing, which I hope will further smooth out the wave interaction characteristics of the aeroplane configuration. I feel that the IHS would be a good starting point to look for some partnership from an experienced foil designer, who may be able to aid me in the development of this device as a saleable product. — Michael Mirfield (michael@mmirfield.freeserve.co.uk)

HYDROPTÈRE Lessons Learned

[13 Oct 99] I’m a Fench student in classes which prepare me to become an engineer, and I have to search information about the hydrofoil system of HYDROPTÈRE. I already checked out the hydroptere homepage, but I couldn’t find what I was really searching for: technical grahics and explanation of the system. I’m looking everywhere for scientific studies of the foil and the detail of how in hell it’s working!!:) What I’d like is: (1) equations, (2) hydrodynamics lessons, (3) in-depth explanation of the phenomena. I’m looking forward to get this important information within the month. — loicmush@easynet.fr

Solar Powered Hydrofoil, Student Project

[26 Sep 99] We are mechanical engineering students at the College of New Jersey and are currently working on a hydrofoil design for a monohull solar powered boat (approximately 16ft long, 2ft wide). We are starting the calculations but are a little confused on where to start. If we know the approximate velocity, weight, and power, what calculations can we use to determine the size of the hydrofoils. Also are there any good software programs out there that might help us in our design. — Gregg Bonstein (bonstei2@tcnj.edu) and Mandy Newman (newman@tcnj.edu)

Propulsion System For Solar

[19 Aug 99] I’m a Mechanical Engineering student at the College of New Jersey and I’m helping design and hopefully build a solar electric boat. My personal design is of the propulsion system. I’m looking into counter rotating propellors in a sleeve (a sort of jet propulsion system) but I’m not sure if this system would greatly increase efficiency at such low speeds. We (as a team) are at the primary stages of our design and would greatly appreciate any advice, brochures, technical documents, etc. that may help us in our project. — Oliver Cueff (cueff2@tcnj.edu)

Response…[23 Aug 99] The least expensive and most available CR propellers are available from Volvo Penta on their outdrive units. These are relatively simple designs that might be adapted for your application. You will need to look at the mechanical losses in such systems as they are designed for much higher powers than you will have in a solar application. You may not see a big gain in propulsive coefficient in this low power application since there is not much swirl in the wake of a relatively large diameter low speed propeller. Whatever gains may exist could be offset by mechanical losses in the CR drive. — Mark Rice (mrice@mapcorp.com)

Hydrofoil Efficiency

[7 Aug 99] As a part of my engineering degree I am conducting a study into “greener” transportation. Do you have any information to support any claims that hydrofoil boats could be more efficient than a boat without hydrofoils? The type of information I would be interested would be power loadings and travelling speeds for the 2 types of boat with the same load so that a direct efficiency comparison can be made. It seems that most boats with hydrofoils are built for performance and not efficiency. I am wondering whether with the underside of the boat lifted out of the water it may be that drag could be reduced to use less fuel. — Martin Crotty (martin.crotty@balliol.oxford.ac.uk)

Response…[7 Aug 99] Sorry, but there is no free lunch. Best ship efficiency is a huge length-to-beam ratio… slo-o-o-w, make that VERY SLOW ship (e.g. supertanker). Although hull drag on a foilborne ship is low, foil drag (induced, friction, flow, wave, etc., is high). — Nat Kobitz (Hynat@aol.com)

Building a Bigger Wake. (link only; click here)

 

Student Project – Foil Calculations

[31 Jul 99] I am a senior at New Jersey Institute of Technology. I am trying to find equations for calculating the most efficient hydrofoil for my senior project, specifically for lifting forces and wave coefficients. Do you know of any book or publication that has these formulas? — Scott Spinoso (d.spinoso@worldnet.att.net)

Student Needs Advice on Engine Installation Design

[26 Feb 99] I am a student at the University of New Orleans. I’m working on my senior design project. I am interested in knowing more information about the LM6000 Gas Turbine. we are trying to build a fast sea lift with the dimensions of: L=950 ft, D=65, T= 27, B=110, Vk= 36 knots. I chose the LM6000 to be my engine but I have to go from this to sizing the intake and the out take system for the engine and all the Auxiliaries for the ship. I looked all over to see or to have a look at a ship with the LM6000 in it but there was no luck. GE Marine were not that helpful. Please provide me with the information needed to design my machinery. — Hamad A (SmQQthxyz@aol.com)

Response…

[14 Mar 99, updated 3 Nov 02] First, take a look at the Fast Sea Lift design described by Chris McKesson at www.hurricane.net/~chrism/sealift1.html (this design uses several LM6000 engines. Then, since you are in New Orleans, how about contacting the public relations departments at Avondale Shipbuilding and also Ingalls Shipbuilding (in Pascagoula MS) to see if they can get one of their engineers to spend a few minutes on the phone with you to help: Avondale Industries, Inc.; 5100 River Rd.; Avondale, LA 70094; http://www.avondale.com; Phone: 504-436-2121; Fax: 504-436-5304; Litton Ingalls, P.O. Box 149, Pascagoula, MS USA 39568-0149; Physical address: 1000 Access Road, Pascagoula, MS USA 39567; http://www.ingalls.com; Telephone: 228-935-1122; Fax: 228-935-1126 — Barney C. Black (Please reply via the BBS)

 Student Needs Advice For Market Research

[21 Feb 99] Hello, I am a student of Enschede University in the Netherlands and I am currently doing a market research for hydrofoils on (sailing)-catamarans and trimarans. I would like to know some things for which I think at this address I’ll get the most response. I trust ;->. In my search for hydrofoils on the market I only found the Hobie Trifoiler and the Windrider. Can anybody tell me how many people sail these crafts in the US (and worldwide)? Are there other manufacturers, because I find two models on a whole world to be very view! From a Duth catamaran-importer I heard that most catamaran-sailers are not too keen on the cockpit-style Trifoiler and Windrider because they don’t have to ‘work so hard’. Could this be the reason why so few hydrofoils are on the market? Surely, the higher speeds will make up for a lot! Browsing through the IHS-pages I stumbled on the add-on-hydrofoils like the DAK-Hydrofoils. I asked myself whether maybe manufacturers of catamarans offer add-ons themselves, for the types of catamarans they sell. Can somebody help me with an answer to this question? I know some people are making great efforts to construct hydrofoils themselves (Of course for some people constructing hydrofoils may be as much fun as sailing them) but I can imagine that many more people just want to click them on their catamarans and sail away. Would there be many people who are interested in this? Now for a more technical note: Going through some patents I saw some interesting hydrofoils, mostly they are surface-piercing or otherwise surface-bound (floater to control pitch of hydrofoil). Just a few patents had manual pitch-control; for example patent US 4,027,614 by Jones Clyde. I can imagine that with manual pitch drag can be lower because for lower speeds you can choose the pitch to be zero (low drag). When a sufficiently high speed has been achieved the pitch can be altered manually, triggering the lift-working of the hydrofoil. Much better than surface-bound hydrofoils which have more trouble coming to speed before the hydrofoils work as they are meant to work! Are there some drawbacks to the use of these manually-controlled hydrofoils so that not everybody is using this system! Please help me out with any information! Thank you, Piet Kamma (edward@e-co.nl)

Photos, Drawings, and Basics

[19 Feb 99] I need pictures and drawings of water, wind, and human powered hydrofoils as I have to improve on existing designs and then make a model ( is it possible to make a functional model because I am already a model aircraft enthusiast and am very interested in hydrofoils). I would like to know about how a hydrofoil works and how the density of the water affects the size of the foils. I would like to concentrate on smaller designs of hydrofoils as my main interest is to use hydrofoils for recreation purposes. I have already found the drawings on the decavitator and have found them very interesting. — Mark Manley in Zimbabwe (jamanley@usa.net)

Response…

[19 Feb 99] Suggest you explore the IHS website thoroughly… there is quite a bit of information there. Specifically, try the photo gallery for pictures, especially the model section. Also, try the links page to other sites for models, for hydrofoils you can build yourself, and for hydrofoil tutorials. Also, IHS has a tutorial on basics. Multihull Magazine and the Amateur Yacht Racing Society (AYRS) publish technical articles on hydrofoil design, and back issues are available. IHS has a link to them. Also, the IHS site has lists of popular and technical references, books, journal and magazine articles about hydrofoils. Finally, look through the posted messages section to find people with similar interests as well as answers to frequently (and not-so-frequently) asked questions. — Barney C. Black (Please reply via the BBS)


[6 Dec 98] I am contacting you regarding membership of your society, with a view to sourcing the latest hydrofoil technology and developments. I am currently studying for a BEng Marine Engineering at Plymouth University in the UK, and am looking for up to date hydrofoil technology information for my final year dissertation. — Jonathan Morley [jemorley@plymouth.ac.uk or r.morley@virgin.net]


[7 Nov 98] I’m studying a degree in product design at Swansea Institute, in the UK, and my final year project is a conceptual jetski based on the hydrofoil. Can you could send me some information on the Yamaha OU-32 hydrofoil jetski or any other info that could help me develop my project? — Eoin Richard Bailey (P27190@exchange.sihe.ac.uk)

Response…[24 Oct 02] Yamaha has a webpage devoted to the OU-32. It includes photos and a movie clip. Go to: http://www.yamaha-motor.co.jp/cp/challenge/expansion/ou32/ou32.html. – Barney C. Black (Please reply via the BBS) [Unfortunately Yamaha updated their website and in so doing deleted the OU-32 information – Webmaster, 9 Sep 03]


[19 Oct 98] I am a student at the National Institute of Applied Sciences in Toulouse (France) and I am finishing my studies in mechanical engineering. Presently, I lead a project based on the study of wave effects and on the dimensioning of a yacht hull structure for Guy Couach Plascoa. This interesting study leads me to seek an internship in naval design and construction. I will be able to bring you my passion for boats and my specific technical knowledge. Lastly, my working period (internship) would start on 15 June 1999 and will be 6 months long. If you are interested in my proposal, please contact me for a résumé. — Bertrand LARRIEU (blarrieu@etud.insa-tlse.fr); 116, rue Manon cormier; 33000 Bordeaux ; France; Phone: +33 (0)5 62 17 17 20 (Answer phone); Fax: +33 (0)5 61 55 97 00


Modeling HYDROPTÈRE

[15 Oct 98] Hello I’m a student in model making.I’d like to do the HYDROPTÈRE for my end of year project.That’s why I need some informations on the subject.I’ll be very happy if you could help me. I hope you will answer me. — Sébastien CLARKE (0951810b@Versailles.men.fr)

Response…[16 Oct 98] IHS has no information “in house” about Hydroptère. I do know of one website devoted to this sailing vessel. The URL is http://perso.wanadoo.fr/terrasse.web/. — Barney C. Black (Please reply via the BBS)

HYDROPTÈRE Website

[21 Sep 98] I send you this message to give you the address of my web-page about the HYDROPTÈRE (http://perso.wanadoo.fr/terrasse.web). It’s a famous French hydrofoil which was built by Eric Tabarly and Alain Thébault. Please send me your comments! — Gabriel Terrasse (gabriel.terrasse@wanadoo.fr)


[18 Aug 98] Subject: Can a student cooperate with you? Hello everybody, I am an italian student of mechanical engineering at the University of Modena. During my five years of studing I have been concentrating on structural mechanics, and in this last year I have been dealing with fluid dynamics. In particular I have been working with the software package FLUENT. For my final thesis I would be very interested in working with a project of yours. If there are projects that could be developed and carried out by a young and enthusiastic student, please just send me some more information. — Paolo Levoni (levolevo73@hotmail.com).


[01 Oct 98] I am doing a dissertation at Liverpool John Moore University on hydrofoils. I would be grateful for any info, contacts, or advice you may have. The following is a draft proposal for the dissertation:

Summary of Aims. 1. Investigate current practice in assessing strength, stability, and performance of sail powered Multi-Hulls. 2. Compare and contrast design and performance of sail powered Multi-Hulls and Monohulls. 3. Determine possible influences of recent European Community Recreational Craft Directive. Examine legislation’s assessment of requirements for different EC categories, e.g. Ocean. Offshore, Inshore. Assess the advantages and disadvantages of safety requirements which are specific to Multi-Hulls, e.g. means of escape after capsize. 4. Look at key variances, between standard and assumptions used for sail powered craft and commercial vessels. Examine the rational behind these variances. 5. Examine how European , United States and other nations standards may vary, and the implications of this. 6. Many Multi-Hulls are built by amateurs for their own use. Determine what influence legislation may have on them.

Summary of Proposed Work: 1. Obtain technical data and relevant information from specific craft, books and journals, ECRC Directive, Multi-Hull designers, Clubs and Societies, and Underwriters. 2. Compare and contrast data from above sources. 3. Apply this information to the six aims of the project. 4. General Conclusions. 5. Identify areas for further investigation. — Chris Edgar(ETMCEDG1@livjm.ac.uk)


[29 Jul 98] This is a request for help on behalf of Dimitri Lehner, who is currently writing his thesis at the University of Sports at Cologne. The subject he’s researching is “Sailing on Catamarans”, especially “Offshore sailing and Cruising on Beach Cats”. To get deeper into the matter – and to experience himself – he sailed from Scharbeutz (North of Luebeck) to Saint Petersburg in Russia in May and June this year. He converted a serial Nacra 6.0 to meet all expected circumstances, as strengthening of hulls, bulkheads, adding wings, reefs, safety and navigation aids as used in cruising. Dimitri kindly asks to get more info on:

  • cruising and long distance sailing with beach cats
  • beach cats used for extreme tours
  • converting of beach cats to meet the above requirements.

So far he researched on the following:

  • Crossing the U.S. North-West Passage on a Hobie 18 in 1986-88,
  • Duncan Roos sailed to the Amazonas source (no literature found),
  • Charity race on HC 16 from Durban to Cape Town in ’96 (no literature)
  • Atlantic crossing of Bourgnon-Giraldi in 1986 (no literature found)
  • Several “raids” in France and the annual “Worrell 1000” race.

His theory is, that cat sailing is subject to ongoing variations, as cat-safaris, club-races, freestyle sailing as the “Bacardi Blast” during the Tornado Worlds on the Bermudas, etc., similar to canoeing on rough waters, oceans, para-gliding, cross-country skiing, etc. According to Dimitri (and I second that …), there’s very little specific literature, videos and reports available on the above topics. He will receive “Multihull Magazine’s” book and video catalogue, and the list with every article published since foundation in 1975. As a journalist I am sure, more has happened than the multihull press has ever heard of – Dimitri needs that ! On behalf of Dimitri I kindly ask you to check your mind, files, archives and computer hard disks for info on his studying subject “Cruising and long-distance sailing on beach cats”. His address is: Dimitri Lehner; Gutenbergstrasse 2; 50823 Koeln, Germany; Phone and Fax +49-221-522 457. I shall be very pleased, if the worldwide multihulled community could give Dimitri a little help to reach his studies aim. No question, all your expenses will be covered. For your convenience, you may also use my email address. — Chris Plaass (plaass@foni.net) phone: +49-431-36 800


[12 Jun 98, updated 24 Feb 01] I am the Technology Instructor at the Topeka Education Center a school in the Topeka Public School System Unified School District (USD) – 501. The center was established to help kids at risk. In the past five years sense we opened the technology program we have done some exciting activities. Due to our limited budget, our students have donated their time and effort to build all of the cabinets and furniture in the Technology Center. Local companies have donated computers and other hardware. For the 1998 – 1999 school year we will be planning to build a hydrofoil sail boat. As you can imagine this will be a large undertaking. If you or your organization would be capable of offering technical assistance or materials it would be greatly appreciated. We have in the past taken on such projects with success; check it out at http://www.networksplus.net/elliott/jetengine. Our student population is made up of inner city youth many of which have had a brush or two with the law and many of the females are parents or are pregnant. The goal of our little school is to help these students become useful people in today’s society. Thus a lot of time is spent on teaching social skills, not only that it is important to get along with others but to be responsible for yourself. This includes holding down a job and paying taxes. Many of our students receive social assistance, and it is also our goal to help these student become self supporting. We have started a program in which students are paid by local companies to work in their businesses two or three hours a night doing a variety of jobs to gain experience. We are very proud of this program because when a student has a job that is meaningful to that student usually we see a jump in the student’s morals and quality of school work. Although many of these students are not college bound, it is important to help them be all that they are capable of being. — James Elliott ( elliott@networksplus.net), Technology Instructor, Topeka Education Center, Topeka, KS 66604; Home Page: http://199.240.184.3/elliott [Editor’s Note: unfortunately the web and email links cited here have ceased to work. There is no mention of of the Topeka Education Center on the website of the Topeka Public School System, so we have been unable to find a current status and address for Mr. Elliott or the Topeka Education Center.]


[21 Mar 98] I would like to build a hydrofoil for science class. My grandmother said she saw a man on TV who was showing a fairly inexpensive project that could support the weight of one person. It used a motor from a vacuum cleaner and required an electrical supply (Big Extension cord) and 2 plywood circles. She could not remember what else but I thought you might be able to help me with this info or perhaps tell me where I can find it. I don’t have a lot of money but I can pay your dues if you have this info I just don’t want to spend on something that cannot help. ( I hope you understand) — R. Fisher, 8th grade (rlfisher@kih.net)


[20 Mar 98] I am a French student in engineering and I am going to make studies about the fences of the foiler catamaran TECHNIQUES AVANCÉES. So it would be kind from you if you could tell me where I can look for information (websites, books, articles …) And if you need information about our catamaran, I would be pleased to give you some. — (marly@ensta.fr), website of the catamaran: http://www.ensta.fr/~dsim/.

Response…[20 Mar 98, updated 28 May 01] The best source of technical information on sailing foil designs is reprints of articles from the Amateur Yacht Racing Association and Multi-Hull Magazine. For a full index, go to http://www.webstrand.org/yachts/aindex/index.shtml. [Note: this index site is no longer active — anyone who knows where it went is invited to submit the new website URL… thank you! – Webmaster] You should also explore the links on the IHS website — Barney C. Black (Please reply via the BBS)


[20 Mar 98] I’m French and my English is poor. I’m 19 years old and I’m in a scientific university to become an engineer. To pass my exam, I need your help! With my friend, we want to do some research about hydrofoils. Please, can you give us some technical and scientific research about this. — Julien Mabille (jmabille@nordnet.fr)


[20 Mar 98] I was searching through the net for some info on the “Aerodynamic and Hydrodynamic Design of a Hydrofoil” and your page came up. I am doing an in depth discussion of the design and operation of a Hydrofoil for my aerodynamics course. I have never really looked at hydrofoils until now. They are really interesting machines. If you have any other info not posted on your site that may help me I’d really appreciate it. Keep up the good work! — Tristan Lee Andrew (tlandrew@learn.senecac.on.ca)


HYSWAS Roll Stability

[20 Mar 98] I’m a 2nd Year Naval Architecture student in UCL. I’m interested in the control systems for the HYSWAS roll stability. I would be grateful if you could send me some references that I could refer to. — Yama (c.seow@ucl.ac.uk)

Response…[21 Mar 98] Our specific HYSWAS control algorithms were developed under U.S. Navy funding and are not available for release. However, I can tell you the following:

  1. Everything in the transverse direction is driven by the loads that you calculate based upon your hull geometry. For example, your strut area projected in the athwartship direction will have a large influence on the loads.
  2. Your roll control algorithms must be fast as you want to counter the applied moment before inertial loads become a big factor.
  3. Calculation of the roll center is critical and this should include added mass effects.

— Mark Rice (mapc@access.digex.net) Maritime Applied Physics Corp., 9010 Maier Road; Laurel, MD 20723


Supercavitating Hydrofoils

[2 Dec 97] I am a Ph.D. Student at the University of Stellenbosch.  I am looking for information on super cavitating hydrofoils (base ventilated and fully cavitating) for possible application to hydrofoil supported catamarans.  Could you provide me with references if you know of some?   — Günther Migeotte (gunther@cae.co.za)

[2 Dec 97] We do not have a handy long list of the many papers written on this subject, but a good place to start is the IHS References Page. Reference no. 62 refers you to Young Shen (shen@oasys.dt.navy.mil). He is an expert in this field and can lead you to a lot more material. He is at the Naval Surface Warfare Center, Carderock. Perhaps you could contact him and give him more specifics regarding your particular project. — John Meyer (jmeyer@erols.com)

[8 Feb 98] Re: super-cavitating hydrofoils. The best effort in this field in my opinion was undertaken at Grumman when we designed transiting foils for testing on FRESH 1. The big problem was to make a smooth transition from sub-cavitation to super. We thought we had a solution but it was never really tested. Our lead hydrodynamist was Ray Wright. He is now retired and living up in Georgia. If you like we could probably contact him and see what he remembers about this effort. — Bob Johnston


Developing a Regional Ferry Transportation Management Plan

[14 Oct 97] I am a student in an English university, and my Strategic Management Project is about passenger hydrofoils; I would like info about the advantages and disadvantages compared to other means of transport, analysis, specific magazines about hydrofoils, and how I can join IHS. — Mike Koronaios (kg758027@stmail.staffs.ac.uk)

[18 Oct 97] 1. Fast Ferry International in England is the premier source of information about fast ferries. You may be able to find the FFI magazine in a library such as at a university with marine-related programs. FFI’s email address is info@fastferry.co.uk. Their phone is +44 1580 766960. Their mailing address is FFI, Milrose House, Sayers Lane; Tenterden, Kent TN36BW; UK. The URL of their web site is http://www.fastferryinfo.com. 2. Marine Log’s magazine is another source, and recently they have had better coverage of hydrofoils than FFI. Their web page location is http://www.marinelog.com. 3. To find out how to become an IHS member, go to http://www.foils.org/member.htm. 4. For an example of a study, take a look at the U.S. Department of Transportation’s Report “Regional Ferry Plan For the San Francisco Bay Area.” This is available on the world wide web at URL: http://www.fta.dot.gov/library/planning/RF/RF.html. The study will not apply to you specifically, but you can see what the questions and trade-offs are. — Barney C. Black (Please reply via the BBS)


[20 Mar 98] I am going to America soon, maybe in July. I am admitted to Ph.D. program by University of Michigan Ann Arbor (Naval Architecture and Marine Engineering), California Institute of Technology (Mechanical Engineering), UC San Diego (Oceanography), Johns Hopkins University (Mechanical Engineering) and some others. Caltech is the most famous, but University of Michigan is very attracive too. Do you know what is the situation in shipbuilding industry in the USA? Could I find a job having a Ph.D. degree from University of Michigan? — Konstantin Matveev [15 Aug 99 UDATE: Konstantin Matveev has arrived in the USA and is attending California Institute of Technology (CALTECH).] email: (matveev@cco.caltech.edu) (website: www.hydrofoils.org).

[updated 16 Mar 98; originally 2 Sep 97] I have decided to receive Ph.D. degree at American university. Earlier I planned to make a career in Russia. 70% of hydrofoils were produced in USSR and here were many opportunities for work. But now situation has changed and there is practically no production of hydrofoils due to lack of finance. In August activity of High-Speed Ships Bureau (with which I worked) stopped. Prospective projects exist, but they will not be accomplished. To continue working in the sphere of hydrofoils I will apply to some American university. Maybe you have connections with professors. I would be very grateful if you advise me several professors and universities where are programs on high-speed ships. Now most Russian designers and managers of high-speed ships believe that the USA will become the world leader in this sphere in the nearest future. I agree with them. There is money in development of high speed ships, and there are geographic features (Great Lakes, Caribbean Islands, sea coastline) which enable to hydrofoil to be the fastest and cheapest kind of transport in some areas. — Konstantin Matveev, Moscow, Russia [15 Aug 99 UDATE: Konstantin Matveev has arrived in the USA and is attending California Institute of Technology (CALTECH).] email: matveev@cco.caltech.edu (website: www.hydrofoils.org)

[3 Sep 97] There is some limited high speed ship research in the US at the Massachusetts Institute of Technology (MIT), Department XIII (Ocean Engineering and Naval Architecture at the graduate level and Stevens Institute of Technology (SIT) in Hoboken, New Jersey has a history of supporting high speed planing hull research. Currently, the center of high speed craft (wave piercing catamaran) development for commercial ferries is in Australia. The University of New South Wales has had some research efforts; I’m not sure of the details. I’m including Dr. Colen Kennell, of U. S. Naval Surface Warfare Center, Carderock Division (the ‘model basin’) on copy of this message. He may be able to add some additional information and send it to you. Best of luck in your academic pursuits! — Mark R. Bebar, Director, Surface Ship Concepts Division, Naval Sea Systems Command (Code 03D1) (Bebar_Mark@hq.navsea.navy.mil).


[24 Aug 97] I am a naval architecture student at the Technical University of Berlin, Germany. At the moment I am working with an engineer in Australia, far away from all my smart books. We have a problem designing a hydrofoil assisted catamaran ferry. We would be interested to gain wisdom on standard profiles selected, design procedures, and cavitation and performance prediction. It would be very helpful, if you could name some websites or other sources dealing with these problems. — Sebastian Bade (bade@cadlab.tu-berlin.de).


[5 Nov 97] I ‘m looking for all informations about hydrofoils. I’m a French student leading a project about the “Hydroptère.” The title of the project is “The Hydroptère, Hydrodynamics of Foils.” Because this project has to be done in a scientific way, my task is to do some calculus with these foils. So please help me in finding this information (I can’t locate it anywhere!) — Sebastien Thellier (sebastien.thellier@hol.fr)

[5 Nov 97] According to veteran IHS member Sumi Arima (arimas1@juno.com): In answer to your question on text books, there is no one good book on foils. Most of the hydro types use Horner’s books Fluid Dynamic Lift and Fluid Dynamic Drag. When we bought a set, the only source was from Horner’s widow. College libraries generally have it, but local libraries do not.” There is also Principles of Naval Architecture, which is a two volume set published by the Society of Naval Architects and Marine Engineers (SNAME). IHS maintains a list of hydrofoil-related articles and papers, but most are hard to find. Another suggestion, the Amateur Yacht Research Society publishes quite a few technical papers, and there is an index of titles on their site… you may see something that addresses your specific need and can contact them for a back issue of the journal containing articles in which you have interest. You should also explore the extensive technical links at the Links for Yacht Designers web site. Finally, if you have specific questions, I can try to forward them to technically oriented members that can discuss them with you. Also I can post questions on the IHS website and solicit responses from all who visit the site. — Barney C. Black (Please reply via the BBS)

 


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The International Hydrofoil Society (IHS) Hydrofoil Message: Chats, Info Sharing, Networking


The International Hydrofoil Society (IHS) Hydrofoil Correspondence Archives

 

Updated last August 20, 2006

Hydrofoils: Sailboats
 

Hydrofoils: Sailboats      Top

 

Archived Messages

Count,MessageID,category,ShortTitle,Message,Date,UserName,MsgPswd,Phone,Email,ParentMsgId

“1”,”946256″,”9″,”Re; Foilboard Video||946256″,”OK, all you technical types out there – take a look at this video and then try to explain how it’s balanced about each axis! http://www.neilprydemaui.com/img/item/foilboards/windsurf/rush_foil_%20windsurf.mov

Furthermore, if the foiler had been more balanced, he could have focused on speed and the non-foiler might not have overtaken him at the end of the video.

I’m guessing the Miller foil sailboard ( http://www.foils.org/miller.htm ) has better pitching stability.”,”2005-12-12″,”Mac Stevens”,”nopswd”,” “,”stevensm@earthlink.net”,”945786″

“2”,”946245″,”9″,”Re; Foilboard Video||946245″,”OK, all you technical types out there – take a look at this video and then try to explain how it’s balanced about each axis! http://www.neilprydemaui.com/img/item/foilboards/windsurf/rush_foil_%20windsurf.mov Ok, I’ll try:

I challenge your premise that it is balanced about each axis. The board appeared quite unbalanced.

I think it is balanced the same way a unicycle or an ordinary sailboard is balanced, i.e., the operator’s control of weight and other forces.

The rear hydrofoil probably adds some pitching stability.”,”2005-12-12″,”Mac Stevens”,”nopswd”,” “,”stevensm@earthlink.net”,”945786″

“3”,”946241″,”9″,”Re; Foilboard Video||946241″,”OK, all you technical types out there – take a look at this video and then try to explain how it’s balanced about each axis! http://www.neilprydemaui.com/img/item/foilboards/windsurf/rush_foil_%20windsurf.mov Ok, I’ll try:

I challenge your premise that it is balanced about each axis. The board appeared quite unbalanced.

I think it is balanced the same way a unicycle or an ordinary sailboard is balanced, i.e., the operator’s control of weight and other forces.

The rear hydrofoil probably adds some pitching stability.”,”2005-12-12″,”Mac Stevens”,”nopswd”,” “,”stevensm@earthlink.net”,”945786″

“4”,”945786″,”9″,”Foilboard Video||945786″,”OK, all you technical types out there – take a look at this video and then try to explain how it’s balanced about each axis!

http://www.neilprydemaui.com/img/item/foilboards/windsurf/rush_foil_%20windsurf.mov”,”2005-12-10″,”Tom Speer”,”nopswd”,” “,” “,”9”

“5”,”873505″,”9″,”Re; Hydrofoil Voyager David Keiper Book||873505″,”I have just listed a copy of David A. Keiper’s book Hydrofoil Voyager on eBay. The item number to search for is 4567171188. This is a 10-day listing. This item is out of print and scarce. The book is (mostly) about design, construction, and sailing in the Pacific in the first hydrofoil sailing yacht WILLIWAW. See the listing for more details. There is a review of this book at: http://www.foils.org/williwaw.pdf. There is info about Dave Keiper at: http://www.foils.org/dak.htm. There is a short video clip of WILLIWAW in action at www.exigent.info/willi.mpg (this is an 11 meg file, so don’t dare go there if you have a slow internet connection!) Questions about this book may be submitted via the listing on the eBay website.
“,”2005-08-08″,”Barney C Black”,”poopdeck”,” “,”bblack11@cox.net”,”9″

“6”,”862912″,”9″,”Hydrofoil Voyager David Keiper Book||862912″,”I have just listed a copy of David A. Keiper’s book Hydrofoil Voyager on eBay. The item number to search for is 4563256226. This is a 10-day listing. This item is out of print and scarce. The book is (mostly) about design, construction, and sailing in the Pacific in the first hydrofoil sailing yacht WILLIWAW. See the listing for more details. There is a short video clip of WILLIWAW in action at www.exigent.info/willi.mpg (this is an 11 meg file, so don’t dare go there if you have a slow internet connection!)”,”2005-07-18″,”Barney C Black”,”poopdeck”,” “,” “,”0”

“7”,”851283″,”9″,”Re; Re; Surface piercing hydrofo||851283″,”Jake,

The foiler moths that I have seen don’t have fences fitted and seem to be able to get away without them. In the first instance, in your position, I wouldn’t bother to fit fences and just test the board to see how it goes. After experimenting, if you have the feeling that air is being drawn down on the low pressure face, then you can always retrofit a fence or two later. Any fence will normally add drag, and that is the last thing you need if you are trying to speed sail. “,”2005-06-26″,”Martin Grimm”,”nopswd”,” “,”seaflite@alphalink.com.au”,”0″

“8”,”830684″,”9″,”Rave Hydrofoil for Sale||830684″,”WindRider RAVE Hydrofoil Trimaran Sailboat, 1999, Main and Jib, yellow hulls, custom galvanized trailer. Dealer display boat. $4000

Bob Rundus Sailboats
36 East Green Street
Champaign, IL 61820
Phone 217-359-3000
“,”2005-05-18″,”Robert Rundus”,”nopswd”,” “,”brundus@insightbb.com”,”0″

“9”,”821336″,”9″,”Re; Re; Surface piercing hydrofo||821336″,”Thanks Tom,
I have just re-read my posting and I have been somewhat confusing. I am not looking at bi-directional foils. I am wishing to build a pair of asymetric windsurfer fins suitable for surface piercing usage, as the fin will be fitted behind or to the side of the board, not sticking out of the bottom of it, and may be canted to provide some lift. As I have fitted the device to a speed board and intend to take it to Weymouth speed week this year, low drag and no ventillation at high speeds are important factors. I have also conceived a system that enables the two separate fins, one port , one starboard profiled to be swapped while sailing. I just need to get the test rig working on one tack so that the optimum fin position, cant, rake, attack angle etc. can be discovered.
Could I just use one of the profiles you recommend for foiler moth lift foils and fit a couple of fences?
Rich Miller, by using a long symetrical root foil with fence, ended up with his asymetric foils submerged all the time, so the demands on his foils were slightly different to mine. “,”2005-04-30″,”Jake Frith”,”nopswd”,” “,”jakefr@southamptonrowing.org”,”0″

“10”,”821326″,”9″,”Re; Re; Surface piercing hydrofoil||821326″,”I don’t think ogival sections are a great idea. The sharp leading edge leads to separation unless the angle of attack is in a narrow range of ideal angles of attack. When separation occurs, you have all the ideal conditions for ventilation. So everything can be fine, and then suddenly change dramatically with just a small difference in loading.

It’s possible to design bi-directional sections that have rounded edges instead of sharp ones. With attached flow at the leading edge, you can maintain a good run of laminar flow, while still controlling the location and extent of the laminar separation bubble. And separation begins at the trailing edge, where it can progress smoothly and predictably as you load the foil.

For an example of such bi-directional sections, see http://www.basiliscus.com/ProaSections/Paper/ProaSections.htm. These are predicted to have comparable performance to conventional NACA sections, but no experimental data are available to confirm this yet.”,”2005-04-30″,”Tom Speer”,”nopswd”,” “,”me@tspeer.com”,”0″

“11”,”819881″,”9″,”Corection to address||819881″,”Hi Jake,

Here’s a quick correction to the web site given previously. It is: boatdesign.net and the tread you are looking for is “foiler design”. You will probably be required to register, but you should find the site to be useful.

If you reply and need a response, use this temporary address: rvell7829@yahoo.com. “,”2005-04-28″,”Ray Vellinga”,”nopswd”,” “,”rvell@san.rr.com”,”0″

“12”,”819877″,”9″,”Re; Surface piercing hydrofoil||819877″,”Jake,

If you are not already reading boatdesign.com, you should try it. There you will find a running dialog about designing hydrofoil sailing moths.

If you design a sailing board that reverses direction, look at the Ogival sections. They are symetrical fore and aft, ie, they have sharp leading edges coming and going. They are a segment of a circle on top with a flat underside.

Hope this helps.

Ray Vellinga”,”2005-04-28″,”Ray Vellinga”,”nopswd”,” “,”rvell@san.rr.com”,”0″

“13”,”819373″,”9″,”Re; Surface piercing hydrofoil||819373″,”You raise quite a few thought provoking questions in your posting. Hopefully one of the design-oriented people in IHS will answer you. Meanwhile you might want to take a look at Rich Miller’s successful design, if you have not already seen it. Check these two pages:
http://www.foils.org/miller.htm
http://www.exigent.info/miller.pdf

I doubt that Rich follows the IHS BBS, so if you want to talk to him, you could certainly give him a call or send him an email. The last contact info I have for him is: Rich Miller (rich@ski.org); 640 Colusa Avenue; Berkeley CA 94707 USA; phone: 510-525-8006. I am not sure if all that is still good.”,”2005-04-27″,”Barney C Black”,”nopswd”,” “,” “,”0”

“14”,”819015″,”9″,”Surface piercing hydrofoil||819015″,”I would be enormously grateful for any advice IHS membes can give on the following:
I am nearing completion of a sailboard based test rig which I intend to use to attempt to achieve a semi hydrofoiling single tack sailboard. In short, the system uses a conventional board, truncated aft of the back strap with finbox removed and filled in flat. There is a mechanism that allows the fin to be adjusted in pitch, cant, angle of attack, depth, and -within the constraints of the position of the board and the sailor’s back foot- position. (In other words infinitely adjustable)
I propose to carry out the following test schedule:

1) Fix a conventional symetrical fin centrally as far forward as the back of the board will allow, ie., so it is in the same position as it would have been slid right to the back of the finbox, except it will no longer have the endplate effect of the board. The task here will be just to get the thing sailing. First barage of questions… Will a conventional fin just spin out due to the loss of the endplate effect allowing air to be sucked down? If I wish to fit fences to the fin, how big should they be, should they entirely surround the chord or just be around the leading edge? Should the fences be angled up or down, if so by how much? When I travel at high speed in choppy water on a standard board and the tail of the board frequently leaves the water I don’t immeadiately spin out, so would I even need to modify the fin at all?

Part ii)Fit asymetric foil/s (single tack use obviously) so that the fin will attempt to provide lift, rather than just lateral resistance, and start playing with angles of attack and canting the fin (tip to windward) to provide a more accurate counter to the forces from the sailor’s feet and the mastfoot. I have been looking at the horizontal lift foils that Moths are using, but am not sure if they will work in the context of surface pircing and at the higher speeds. (anything over 50 knots will do:) Once again, will it need fences?
Essentially my problem is that I have spent far too much time actually windsurfing etc. to learn how to design my own bespoke range of foils for this craft. I am capable however of drawing a series of chords from foil coordinates and building a simple foil.
Does anybody have a good idea what foil already designed (and at what scale of chord) might work for these purposes (both the symetrical and asymetrical), and where I might find the coordinates. For ease of fabrication I would like to try a straight untapered foil, perhaps just with a bit of finishing at the business ends that could also be end for ended for the different tacks on the asymetric foil.
Any other comments on whether this has been done before etc. most welcome.
Final inventor’s rant… I believe that the recent regaining of the outright speed sailing record has largely been due to Finian Maynard’s adoption of a single sided rig. After all Yellow Pages’ foils only allowed it to sail on one tack. Why, when water is some 800 times denser than air and fairly primitively rigged ice yachts have bettered 100mph, is the windsurfing world wasting time developing rigs while still sailing on fins that are hugely compromised by having to work on both tacks?
Secondly, Think why a windsurfer has a fin mounted in the middle sticking out of the bottom of the board at the back. I think it might be lazy thinking – the evolution from surfboards which do not have to cater for the same loads, and ease of manufacture. There are two seperate forces delivered by a windsurfer: planing lift of the board and lateral lift of the fin. by sticking the fin out of the board, surely you are introducung all sorts of strange immeasureable vortices at its base. The stuff I am doing at the moment is attempting to divorce as much as possible the two different goals of board and fin. It may of course not work…
Any ideas, help gratefully received here or on jakefr@southamptonrowing.org”,”2005-04-26″,”Jake Frith”,”nopswd”,” “,”jakefr@southamptonrowing.org”,”0″

“15”,”817494″,”9″,”New Book on Hydrofoil Sailboat MONITOR||817494″,”The auction is now closed. However, the book can still be purchased direct from the author. The closed eBay listing can be viewed for 90 days to get details about the book and some copies of the illustrations. Just used the advanced search function on the ebay site to search for the item number among the completed auctions.”,”2005-04-23″,”Barney C Black”,”poopdeck”,” “,” “,”0”

“16”,”814200″,”9″,”New Book on Hydrofoil Sailboat MONITOR||814200″,”There is a new book for sale on eBay about the hydrofoil sailboat MONITOR developed in the mid-1950s by Baker Manufacturing Co with US Navy backing. Go to www.ebay.com and search for item # 4542861342. The listing expires in five days.

The 61 page soft cover book includes 19 drawings and sketches of various elements of the MONITOR design covering the foils, hull, sail and control arrangements. Also contained in the book are 25 photos of MONITOR and other Baker hydrofoil craft. The back cover features a screen shot from a simulation by Hanno Smits. This book is undoubtedly the most definitive single source of information describing the MONITOR design.

MONITOR Principal Characteristics:

Sail area: 230 square feet
Length of hull: 26 feet
Overall width: 21 feet
Weight 1014 lbs plus operator(s)
Wind velocity required to fly: approx 13 knots
Automatic trim regulation with varying thrust
Steering by rotation of rear foil
Foil incidence angles adjustable in flight
Rolling moment partially compensated by differential adjustment of foil angles

This book will be of interest to designers and engineers who want to know the details of MONITOR’s design and construction. It is also of interest to hydrofoil historians and model makers. People intrigued by David Keiper’s hydrofoil yacht WILLIWAW and hydrofoil sailboat STORMY PETREL may also be interested in this book about an earlier sailing hydrofoil craft.

“,”2005-04-16″,”Barney C Black”,”poopdeck”,” “,” “,”0”

“17”,”789894″,”9″,”Telestar foil conversion||789894″,”Michael

Go to our primary web site at

http://www.foils.org/index.html

Then go to our Pico search at the bottom of the page and enter

Sailing Foils or ladder foils

You will find tons of information addressing your conversion.

It has been a long time since I saw a working Telestar. Good Luck

Bill White
Web master”,”2005-03-02″,”William White”,”nopswd”,” “,”whitewn@speakeasy.net”,”0″

“18”,”782452″,”9″,”Telstar 28||782452″,”Intersted in building a ledder hydrofoil on my Telstar 28 (simmiler to dak hydrofoil).
looking for information/blueprints/etc that can help me with this.
Thanks,
Michael
“,”2005-02-16″,”Micael”,”nopswd”,” “,”mizkoviz@yahoo.com”,”0″

“19”,”764795″,”9″,”Re: Bruce’s Foil||764795″,”The best information is by Edmond Bruce himself – “Design for Fast Sailing,” The Amateur Yacht Research Society, 1976. I think there’s also some information on Bruce foils in the AYRS book, “Sailing Hydrofoils.”

(Some background: the Bruce foil is like a daggerboard or centerboard placed on an outrigger instead of on the centerline of the boat. The foil is canted to provide a stabilizing vertical force as well as a horizontal force to counter the side force from the rig. This greatly reduces the heeling of the boat, using the hydrodynamic moment from the foil for lateral stability instead of the hydrostatic moments from hull form stability or keel ballast.)

Bruce typically canted the foils at 45 degrees from the vertical (tip inward). The outrigger beams were sized such that the center of laeral resistance of the foils was located the same distance from the centerline as the height of the center of effort of the sail rig. Both low aspect ratio foils and moderate aspect ratio foils were used. His small scale tank tests showed an aspect ratio of 1 gave him the best performance, although he only tested aspect ratios of 3 or less and at low Reynolds numbers. I believe in later publications he used a planform with a circular arc (ogival) leading edge and straight trailing edge.

In his moderate aspect ratio sailing experiments, he mounted the foil on a small outrigger float with a pivot so that it could be raked aft like a centerboard when the foil was to windward. One needs to have the center of lateral resistance aft with the foil to windward and forward with the foil to leeward to get the same directional balance as a centerboard, because the force from the sail is inclined forward.

As for sizing the foil, I’d be inclined to use 40% more area than you’d use for a conventional foil. I’d also go with a high aspect foil rather than the low aspect ratio that proved best in his tow tank tests. Naturally, a symmetrical section is required because the foil has to operate on both tacks.”,”2005-01-15″,”Tom Speer”,”nopswd”,” “,”me@tspeer.com”,”0″

“20”,”762800″,”9″,”Bruce’s Foil||762800″,”Can anyone supply design criteria for an Edmond Bruce foil?”,”2005-01-12″,”B.Rowe”,”nopswd”,” “,”krowe@hit.net”,”0″

“21”,”738445″,”9″,””Monitor Hydrofoil Sailboat“||738445”,”The book “Monitor Hydrofoil Sailboat Design in Review” is now available. The cost is $25.00 plus $5.00 S&H in the US. S&H for Europe is $10.00 USD and for Australia is $12.00 USD. Please include mailing address.
Orders are to be made thru: Neil C. Lien
424 Meadow Lane
Evansville, WI 53536
“e”mail address: nlien@inwave1.com
phone 608-882-5551″,”2004-11-15″,”Neil C. Lien”,”nopswd”,” “,”nlien@inwave1.com”,”0″

“22”,”732074″,”9″,”Trimaran stability||732074″,”I have a Sea Pearl trimaran and am looking for ways to reduce weight. The boat is 21′ with a beam of 14′. The center hull is 5’6″. Would it be feasible to replace the amas with foils to provide lift? They would either skim the surface or be out of the water in light air, but would gradually submerge as the wind picked up, eventually balancing the design force from the sails. The center hull will provide adequate form stability at rest. Thank you.”,”2004-11-02″,”Bruce Rowe”,”nopswd”,” “,”krowe@hit.net”,”0″

“23”,”722690″,”9″,”Re: hydro foils for kiteboard||722690″,”Hi Rich,

I am French so excuse me if my English is poor.

Congratulations for your kitesurf performance. I am not sure that the solution to go faster is an hydrofoils system.
The limit speed could be caused by the very strong drift force due to the kite.
If you want to experiment hydrofoils, you have to study very seriously these systems ( I think there is not a good “ready to use” system which can be fitted on a kitesurf )

You can use composite material (fibreglass, carbon fibre, epoxies resin) to make hydrofoils (not only metal). You can buy, for example, long sailboard fins (about 50 cm) to begin tests (symmetrical profiles, but it can be used)

Good luck and contact me if you want more information.

Gerard Delerm

http://gerard.delerm.free.fr
“,”2004-10-13″,”Gerard Delerm”,”nopswd”,” “,”gerard.delerm@free.fr”,”0″

“24”,”721718″,”9″,”hydro foils for kiteboard||721718″,”I have recently competed in Weymouth speed week on a kitesurf kite and standard board and have posted a speed of 30.97 knots.
I wish to increase the speed and the only thing I believe is stopping me is the boards resistance. I wish to try out hydrfoils on my board that will lift the board approx 5-10 cm off the surface of the water. I have thoght about using hydrfoils off model boats.
The hydrofoils will have to be made of metal I think. Has anyone got any suggestions of where I could get such things from or made?
The board I am using is 130cm long and 37cm wide.
I look forward to your suggestions
Richard Gowers
Uk”,”2004-10-11″,”Rich Gowers”,”nopswd”,” “,”info@surf-skate-ride.co.uk”,”0″

“25”,”715101″,”9″,”T Foils||715101″,”Please send me a sample 2004 newsletter and information about joining your org. I am a small sailboat builder in the USA and I want to learn about T-foils for daggerboards and rudders. To date I know almost nothing, could you recommend a book or books that could teach me about foils. I build a moth boat and the Europe Dinghy (which is a moth boat but has a more advanced sail) Anything you can do to help me get started will be greatly appreciated.
Thank You,
Charles Graves
Graves Little Boatyard
1675 Riahardson Road
Merritt Island, Florida
USA 32952
www.graveslittleboatyard.com”,”2004-09-27″,”Chas @ Graves Little Boatyard”,”nopswd”,” “,”ChasMo77@aol.com”,”0″

“26”,”699955″,”9″,”catlift foils||699955″,”I don’t know about the catlift foils. I do have some of the Dak foil sections, if you need to see a section profile. Sorry, no plans or complete kits, although they do turn up rarely the internet.”,”2004-08-26″,”Scott Smith”,”nopswd”,” “,”ssmith@syntheon.com”,”0″

“27”,”692423″,”9″,”Re; Catlift information?||692423″,”Gordon,
I can’t say I have heard about the “Catlift” foils but certainly many years ago David A. Keiper (DAK Hydrofoils) developed a “Dak-foil” conversion kit for Hobie 16 catamarans. A photo of a Hobie fitted with such foils appears in the 1978 issue of Jane’s Surface Skimmers. You can find other information related to David’s work on our website. Unfortunately, he passed away a number of years ago.”,”2004-08-10″,”Martin Grimm”,”nopswd”,” “,”seaflite@alphalink.com.au”,”0″

“28”,”692419″,”9″,”,Re; Catlift information?||692419″,”Gordon”,”2004-08-10″,”Martin Grimm”,”nopswd”,” “,”seaflite@alphalink.com.au”,”0″

“29”,”685487″,”9″,”Catlift information?||685487″,”Hi,

Does anyone have any information on a device called a Catlift. It can supposedly be attached to a Hobie Cat or Top Cat and lift if up using a small hydrofoil.

Any information you may be able to provide would be appreciated.

Thank you,

Gordon Swift

Gordon@softwarecharts.com”,”2004-07-27″,”Gordon Swift”,”nopswd”,” “,”Gordon@softwarecharts.com”,”0″

 

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PRIOR TO 2002:

International Hydrofoil Society Correspondence Archives…

Hydrofoil Sailboards, Windsurfers, Surfboards
Descriptions, Advice, Sources of Information, and Requests For HelpGo to Posted Messages Bulletin Board (BBS)
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Correspondence

Hydrofoil Surfboard Source

[27 Apr 02] Please forward all inquiries for hydrofoil surfing to www.hydrofoilsurfing.com — Daniel Elias (xmandan@extractorsled.com)

Hydrofoil Windsurfer “Parabolic Design”

[16 Dec 01] I am designing a hydrofoil windsurfer. Your site has been most informative and inspirational. I’ve been in contact with Rich Miller and Gerard Delerm, two of your foiling windsurfing enthusiasts. They’ve been excellent sources of info. My project is finally moving forward. I’ve been trying to design a prototype of a “parabolic wing hydrofoil”. I saw one once in an Industrial Design Magazine six years ago, I liked the idea but have been unsuccessful in locating the necessary technical information to actually create one from scratch. As you’ll see, “Parabolic Hydrofoil” does not a good key-word search make. By Parabolic, I mean as if we took a straight wing form, held it at both ends and bent or bowed it downward into the water. I may be calling the curved wing by the wrong name etc. If you know what I mean and have any leads please contact me. — Eric Dixon, Designer/Builder/Inventor (wetpaintinc@earthlink.net)

Responses…[16 Dec 01] At one time about 25 years ago, I sat through a presentation by a fellow in Seattle who built a tow model of a four-legged hydrofoil using parabolic disks as foils. Since he towed the model with his pleasure craft, I cannot attest to his success since almost anything that is towed can create enough lift to skim on top of the water. I don’t have any more details or who may be of help in tracing down this individual. — Sumiyasu Arima (arimas1@juno.com)

[16 Dec 01] I am not familiar with the term parabolic when applied to a hydrofoil. From your description as to what you mean by “parabloc”, it looks like “negative” dihedral. Or am I misinterpreting your statement? I wouldn’t advise using negative dihedral. Although it was used on the tips of the aft foil of PHM (but the center section, which was much larger, had positive dihedral). If anything, you want positive dihedral as a stabilizing effect. Not many airplanes flying around with negative dihedral. Note that there is a hydrofoil document by Gibbs and Cox (although very old) on the AMV CD ROM that has a discussion of effects of dihedral and will tell what you want to know. — John Meyer (president@foils.org)

[16 Dec 01] My only comment is that the reason PHM had negative dihedral (anhedral?) on the outboard sections of the aft foil is that the ship had a very high turning rate (degrees/second) when foilborne at design speed and, as a result, in fully coordinated turns, the roll angle of the ship was very large (on the order of 20 degrees as I recall. The negative dihedral was needed to keep the outboard tips of the foil submerged in turns. It also contributed to increased roll control authority at oblique headings in waves. Bill O’Neill could expound on this further, I’m sure. If Eric isn’t looking for such high performance, then positive dihedral is the way to go. — Bebar Mark R NSSC (bebar@foils.org)

[16 Dec 01] I’m not certain that we’re discussing the same concept. If you could go to the Hydrofoil Society’s web site and look in the photo gallery under “what’s next?”, find Luigi Colani’s site. There is a concept model from 1973. It looks like a fish with a push prop. and it has an “external observation/control cabin. This model has two foils each with curving profiles. Another image from the photo gallery shows the ship “Katran-1” from the Volga shipyard, this working vessel has curved foils as well. This is the concept I wish to employ. Where do I find technical info on these types of foils? — Eric Dixon, Designer/Builder/Inventor (wetpaintinc@earthlink.net)

[16 Dec 01] I checked the material you referred to, so now I understand the foil configuration you have been talking about. Such a foil has been referred to as a “Hoop Foil” and was first used by Prof. Oscar Tietjens in 1931. I described this briefly in a draft of a book (Ships That Fly) I put together some years ago. I am attaching the brief discussion here as an Adobe Acrobat file. As to analysis of such a foil, my guess is that you could approximate it as a V-foil with an appropriate dihedral angle and end plates, and go from there. Tom Speer may have looked at this, so I am cc’ing him on this in case he can help. — John Meyer (president@foils.org)

[16 Dec 01] I’ve not looked at hoop foils. I agree that they would be somewhat similar to V-foils. My guess is the flatter center section would have less wetted area than the V-foil but possibly more induced drag due to its closer proximity to the surface. Perhaps this is what he had in mind: http://www.geocities.com/aerohydro/Seafliertext.htm — Tom Speer, F-24 Ama Deus, website: www.tspeer.com; email: (me@tspeer.com)

[3 Feb 02] I partly fabricated such parabolic / hoop foils for my own windsurfer once but never finished that project, and earlier last year my windsurfer broke in half so now there is even less reason to finish those hoop foils off. I may reply at some time with more details and photos of my attempt. — Martin Grimm (seaflite@alphalink.com.au)

Surfboard Hydrofoils

[29 Sep 01] Hello, can you please assist me with information about Laird Hamilton and hydrofoils on surfboards? — Graham East (soupbonesurfer@xtra.co.nz)

Response…[11 Nov 01] A little late but the following url www.tim-mckenna.com/ has a photo of Laird Hamilton on a hydrofoil surfboard. That sums up my knowledge — Bill White (linksout@foils.org)

[27 Apr 02] See this website: www.hydrofoilsurfing.com — Barney C. Black (Please reply via the BBS)

Planing Sailboard

[10 Aug 01] I am from the University of Natal and need assistance on the theory of planing. I am doing a dissertation on the hydrodynamics of planing sailboards. If you have any information on this it would be greatly appreciated. Would a copy of the 1994 Shanghai Conference proceedings be of any use? — Gordon Cook (981189683@stu.und.ac.za)

Responses…[10 Aug 01] Try the following two websites:

Tom Speer (tspeer@tspeer.com) website: www.tspeer.com

[13 Aug 01] Planing theory has been covered in depth by many papers authored by Dan Savitsky at Stevens Institute. “High Speed Small Craft” by Peter Du Cane (Temple Press, London – 1964) is a good reference. The Heller-Jasper paper on this subject is a classic (SNAME, late 50s I believe). Joe Koelbel has also published some good basic small planing craft design guidance – in papers and magazine articles. — Ken Spaulding (secretary@foils.org)

Speed Record

[4 Jan 01] According to the 2000 Guinness Book of World Records, prior to the Yellow Pages ENDEAVOUR gaining the sailing speed record, it was held by a windsurfer. Thierry Bielak of France rode his windsurfer to a speed of 45.34 knots (84.02 km/h or 51.21 mph) at Camargue, France. — Martin Grimm (seaflite@alphalink.com.au)

Response…[3 Feb 01] A few years ago I saw a photo in a windsurfing shop purporting to show the setting of a windsurfing record of 54+ mph. I can’t recall where the shop was. There is a sailor named Mike Delahanty who runs Gorge Sails (in Washington state, near Hood River) who was the speed champion about that time. Perhaps he could tell you the current situation. — Rich Miller (rich@mail.ski.org)

Sailboard Success in France

[3 Oct 00] I am French, and I built a homemade sailboard with hydrofoils. I named it “Le Foilboard.” To show my work I made a little home page about it. There is a French version and an English one. — Gérard Delerm (gerard.delerm@free.fr) website: http://gerard.delerm.free.fr

Hydrofoil Surfboards

[17 Aug 99] Do you know if anyone has worked on hydrofoil surfboards? For waves? I’m looking for info, as I surf, and spend way too much time on crazy ideas, so I don’t want to duplicate someone else’s work. — Doug (directaudio@surfside.net)

Response…[17 Jan 99] Go to the IHS Links page and look for links to the Miller Hydrofoil Windsurfer and the Air Chair hydrofoil water ski. Those two examples are the closest to what you are talking about.

Small Foil Design Info Wanted

[24 Jul 99] Has anyone that you know of designed or produced a hydrofoil windsurfer? I had the idea to design one, but need to know more about the characteristics of foils, i.e. how much surface area required for x amount of weight and speed over the foil, etc. Any help you could give would be appreciated. — Dr. David Miller (Dboncraka@aol.com)

Hydrofoil Sailboard Design Problem

[14 May 99] I’m a student in my first year in the Ecole Nationale Supérieure des Mines de Paris, And I’m just beginning to work on a project : I’d like to try to make a windsurf board with hydrofoils. I know this is not very original, and I have seen the links to ” Miller hydrofoil,” but I don’t know how to contact him. Moreover, I don’t know which solution I am going to chose (number and type of foils). I’d like to have some advice on this issue. I already have some contact with Hugues de Turckeim, a French shaper who is working on the TECHNIQUES AVANCÉES, the catamaran of Ensta, also a French engineering school. — Yannig-François le Roux (98leroux@paris.ensmp.fr); PARIS

Another Hydrofoil Sailboard Design Problem

[17 May 99] I’m working in the design of a windsurf board with the hydrofoil concept. Do you have some information regarding this idea? — Juan Carlos Santilli. (jcsantilli@email.msn.com)

Response…[19 May 99] There is magazine article that describes the Miller hydrofoil wind surfer in detail… this description will give you plenty of ideas for your project. Please note that Miller’s design is patented and may not be copied for profit! — Barney C. Black (Please reply via the BBS)

 

 


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The International Hydrofoil Society (IHS) Hydrofoil Message: Chats, Info Sharing, Networking


The International Hydrofoil Society (IHS) Hydrofoil Correspondance Archives

Updated last August 20, 2006

Hydrofoils: Sailboats
 

Hydrofoils: Sailboats      Top

Latvian CATRI Sailing Hydrofoil
Latvian CATRI Sailing Hydrofoil (Aldis Eglajs)

      • [17 Feb 99] I received some further information from Aldis Eglais in Latvia (Lettland), the designer of the Catri 26R MicroFoiler. At the moment I’m still in the planning phase of my project but I intend to build the boat this summer here in Switzerland. Aldis is offering the plans for a very good price (US$ 1,300), and I’m very close to ordering them. I’m waiting now for his study plans. I will keep you informed. His E-Mail:

aldis@catri.apollo.lv

      • . — Phil Schlund (

106641.71@compuserve.com

      • )
      • Response…
      • [17 Feb 99] There is a short article about the Catri 26 Trimaran on page 48 of Multihulls Magazine Mar/April 1998 edition. The address given is Aldis Eglajs; Maskavas 291/5-26; Riga LV-1063, Latvia; Tel/fax : +371 7258427. -editor
      • 2nd Response…
      • [17 Feb 99] In Winter 1997-98 I did a project for a Dutch company called PJPC Multihulls. They wanted to build the Catri 26 for the European market to sell for about US$50,000. There were complete plans for making the (eastern European) ship suitable ( more comfortable) for the rest of Europe, which was part of my study (I was asked to design a mechanical device to lift the two swords). Unfortunately the Dutch company stopped their activities due to health problems of the owner, so I am at the moment looking for other tri-builders who could use my design. If you want to know more, contact me. — Maarten de Jong (

m.t.dejong@wbmt.tudelft.nl

      • )
      • 3rd Response…
      • [21 Feb 99] We are working out two types of Catri Foilers — trailerable cabin boat range (22′ 26′ 30′) and offshore cruising & racing range (35′ 39′ 45′). After very successful prototype tests in the Netherlands there are two shipyards in Latvia started with 22′ and 26′ and one in San Francisco starting with 26′. The first boats will be delivered this Summer. The 30′ will be started in March for delivery beginning 2000. There are some homebuilders in Australia and elsewhere. You can find our presentation and description of Catri 22, 26R, 30 as well as the draft price list in the attachment. — Aldis Eglajs, Catri Marine (

aldis@catri.apollo.lv

      • )

[Date/Time=03-21-2002 – 10:52 PM]

    Name:webmaster@foils.org [Msgid=236662]
    Sailing Hydrofoils
    Wants World Speed Record in Sailing

        • [13 Jan 02] This looks exactly like the site I need. I want to have a crack at the wind-powered water speed record, and I reckon the only way we’re going to get the thing fast enough is up on a foil. The only problem is I have absolutely no idea. If anyone has info. it really would be appreciated (formulas/heights anything to help me build the hull) — Ian Montgomery (

    primuscroydon@lineone.net

        • )
        • Response…
        • [13 Jan 02] The world sailing speed record was once held by a hydrofoil – Greg Ketterman’s LONGSHOT. This boat has since been adapted for production as the Hobie TRIFOILER . A used TRIFOILER would be a good way to get experience in high speed sailing. In my opinion, the world speed record has risen out of the reach of subcavitating hydrofoils. The current record holder used planing hulls, which you can think of as fully ventilated supercavitating foils operating at the surface, which is where a supercavitating foil is most efficient. Cavitation proved to be a barrier to Ketterman’s pushing his hydrofoil to today’s speeds, and I doubt if there’s much you can do with section shaping to raise the cavitation speed much higher. Designing a supercavitating hydrofoil system that had a lift/drag ratio adequate for a sailing craft is just feasible, but requires very sophisticated hydrodynamics design. Hydronautics’ experience with their supercavitating helicopter-towed sled demonstrated drag reductions on the order of 40% -60% just by doing a more sophisticated type of analysis of the spanwise hydrodynamics of their design. You’d have to do the same for a sailing hydrofoil. Something like the Windjet LANDYACHT adapted for the water might be a starting point for the hull and rig design. — Tom Speer (

    me@tspeer.com

        • ); website:

    http://www.tspeer.com

    Monohull Dinghy…

        • [5 Mar 01] Is there any website on a leeward-foil assisted faaast monohull dinghie, say an IC, Contender or 505 with a Bruce on a 3m lever ? — Claus-C. Plaass – Pickert 10 – 24143 Kiel – Germany – email  (

    plaass@foni.net

        • ), ph +49-431-36 800
        • Responses…
        • [5 Mar 01] Not only foil assisted, full flying:

    http://imca-wa.freeyellow.com/index.html

        • . — Tom Speer (

    tspeer@tspeer.com

        • ); website:

    www.tspeer.com

        • ; fax: +1 206 878 5269
        • [6 Mar 01] I have designed a 16′ 100lb 2-person monohull foiler using two(only) fully submerged foils; should be sailing in 2-3 months. Take a look at the Hanno Smits website (listed under websites of IHS members) for info on his work with SP foils and a FLYING DUTCHMAN. Personally, the Aussie work on their Moths is most inspirational and should lead to light weight production monohull foilers that while not as fast (top end) as some multihull foilers will provide the thrill of flying to a much wider audience. — Doug Lord (

    lorsail@webtv.net

        • )

    Hydrofoils Excluded From TheRace2000…

        • [9 May 00] TheRace headquarters has admitted that they limited the entry of our hydrofoiler for the No Limits Race around the world. Their discrimination against foils has seriously impeded the development of effective offshore sailing hydrofoils. Our potential sponsor withdrew when our entry was denied. If they reverse the decision now, there is still a chance to pull it off. The prototype is complete. Our nine foot wide horizontal spans are designed to retract when we hit the inevitable obstacles. Please email

    kevin.church@disney.com

        • with a copy to

    stephanie.schroeder@therace.org

        • and ask them why they are discriminating against hydrofoils and why they still call this a “no limits” event. You can make a difference. Thank you for your support. Peter Murray

    therace2000@hotmail.com

        • Tel.#(1)561-286-2643

    VOLANTIS 60′ Sailing Trimaran…

        • [12 Feb 00] I just attended a meeting of the Northwest Multihulls in Seattle where Duff Sigurdson of Canada presented the latest news on the 60 foot trimaran planned to be built in Hawaii. Sam Bradfield has designed the foils thus she will have inverted T-foils and small amas. Nigel Irens is the designer. They plan a solid wing with reefable/furlable center section, and a hard vertical tab on the lower leech of the rig for depowering. It looks like a more delicate Rave Trifoiler, with a single CF gull-wing crossbar. I was impressed, even considering that Queen Elizabeth II is supposed to christen it. It is not immediately clear that “Volantis” is meant for The Race. Burt Rutan will build the foils in his “Composites” shop in the Mohave Desert, and the majordomo is Adm. Stuart F. Plott, formerly head of seaborne infiltration efforts during the late unpleasantness in Vietnam. Duff also talked about aquatic satellites- small versions of the hardsail trifoiler that would be permanently at sea, monitoring the shipping lanes and seaport accesses, video-monitoring incoming ships for oil dumping/bilge pumping. Solid wings again? Please contact Duff Sigurdson for more accurate news- he is the new publicist: formerly associated with the Ronin project for The Race. — Dave Carlson (

    dacarls@nersp.nerdc.ufl.edu

        • ) website:

    www.fastsail.com/catcobbler/

    Moth Class Sailboat Races With Foils…

        • [25 Feb 00] In a world first, Western Australian International Moth Class dinghy sailor Brett Burville has cracked it with a Foiler Moth, winning outright two heats of the World International Moth Class Championships held in Perth last week and finishing a creditable 10th place overall. The International Moth class is one of the few truly development International sailing classes and also allows foil development. At times Brett was travelling at up to 1-1/2 times the speed of the top existing designs and easily won the races in which he stayed upright. This is no mean feat, keeping in mind that an existing Moth can outpace a 505 and is already the fastest 11′ monohull in the world. Brett’s boat is a standard Moth, with a larger-than-usual T-foil on the rudder and forward V-foils mounted at the end of the wings. It appears he showed bursts of incredible speed in the stronger winds, punctuated by many capsizes. Clearly there is scope for further development, perhaps with some form of sensor control. He was foilborne above about 8-10kts of wind and sailed both downwind and also upwind on the foils. In the light wind races he removed the foils from the simple mountings in a couple of minutes. This is a major achievement, as most foilers to date are only reaching speed machines, like sailboards. This is the first time ever for a foilborne craft to compete successfully around the buoys in all conditions in a truly international standard sailing competition. It is hoped that Brett will produce some further details and it is expected a lot of further development will now proceed, as it is possible to take any existing Moth and truly revolutionise its speed in winds over 10 knots! Who will be first to take it further?? — Ian Ward (

    ianward@ozemail.com.au

        • )
        • Response…
        • [25 Feb 00] See also the article and photos in the Jan 25, 2000 Sailing News from Boating Oz. Also, information and photos from various sources was reprinted in the Spring 2000 edition of the IHS newsletter.

    Racing Boat Design Source…

        • [2 Apr 99] Does anyone know where you can get designs for jet boats (sport/racing versions – not fishing/commercial)? Please email me. — Mathew Davies (

    porsche@porsche-enthusiasts-club.freeserve.co.uk

        • )
        • Response…
        • [3 Apr 99] The following groups run both propeller boats and JET (impeller) boats in various classes. The prop boats are quicker but both achieve speeds in excess of 200 mph regularly. Contacts (Hope the phone numbers are current.):
        • Liquid Quarter Mile magazine (909) 989-1169
        • IHBA International Hot Boat Assoc. (714) 634-4422
        • ADBA American Drag Boat Assoc. (216) 543-9647
        • NJBA National Jet Boat Assoc. (714) 993-2664
        • SDBA Southern Drag Boat Assoc. (817) 662-0774
        • — Ken Cook (

    kencook@hydrofoil.com

        • )

    [Date/Time=03-23-2002 – 12:58 AM]

      Name:Webmaster@foils.org [Msgid=237130]
      Archive; G Baker Hydrofoil MONITOR
      Click below to Open.

      http://www.foils.org/monitor.htm
      [Date/Time=03-24-2002 – 2:01 AM]

        Name:webmaster@foils.org [Msgid=237508]
        Archive; Add Hydrofoils to Sailboats
        Click below to Open.

        http://www.foils.org/sailfoil.htm
        [Date/Time=03-24-2002 – 12:16 PM]

          Name:webmaster@foils.org [Msgid=237618]
          Archive; Sailboards, Windsurfers, Surfboard
          Click below to Open

          http://www.foils.org/sailbord.htm
          [Date/Time=03-24-2002 – 3:26 PM]

            Name:webmaster@foils.org [Msgid=237691]
            Archive; Hydrofoil Racers – Sail/Power
            Click Below to Open this Archive.

            http://www.foils.org/racers.htm


            [Date/Time=03-25-2002 – 4:09 PM]

              Name:Webmaster@foils.org [Msgid=238105]
              Flying Keelboat

                ViewThread

                    • Has any one any knowledge of a monohull KEELBOAT using hydrofoils in a full flying manner?My company at microsail.com is about to introduce a canting keel model 42″ in length that I believe may be the first fully flying hydrofoil keelboat called the aeroSKIFF. Any comments with substantiated information would be very helpful.I amm working on a version of this design for full size sailboat applications particularly in the Open 60 Class..

                [Date/Time=04-20-2002 – 4:44 PM]

                  Name:Doug Lord lorsail@webtv.net, [Msgid=249625]
                  Flying Keelboat

                      • Doug
                      • I have seen many multihulled sailing Hydrofoils and a few Centerboard/daggerboard/leeboard Monohulled sailing Hydrofoils. I have also seen Cantable Daggerboards and keels. I have never seen the combination you describe.
                      • Are the Foils fully submerged and attached to the keel or are the foils separate from the keel?
                      • At 42 inches, you might want to also post this message in the Sailing model section.

                  [Date/Time=04-20-2002 – 4:59 PM]

                    Name:Bill White whitewn@speakeasy.net, [Msgid=249626]
                    Flying Keelboat

                        • Doug,
                        • When you say Keelboat, I understand that to mean a sailboat with a centre keel? I am not aware of any such boat adapted to run foilborne. Looking though a publication by AYRS on sailing hydrofoils indicates that most experiments with sailing hydrofoils have tended to use hydrofoils mounted on outriggers or catamarans. In the case of monohulls, the foils are usually mounted off wide crossbeams and there is no keel below the hull in those case. The nearest I can come up with compared to what you outlined are a number of International Moth class sailboats that have been designed with hydrofoils fitted rather than the usual centreboard. Photos of these craft can be seen on the International Moth Class Association of Western Australia website at:

                    http://imca-wa.freeyellow.com/index.html

                        • I am curious about your own concept so I hope we will hear more about it from you down the track?

                    [Date/Time=04-25-2002 – 7:47 AM]

                      Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=251569]
                      Adding foils to 27-ft catamaram

                        ViewThread

                            • I am interested in adding hydrofoils to a 27-foot stiletto catamaran. Can you send me any information on how to start designing the foils and how they could be installed?

                        [Date/Time=05-04-2002 – 8:24 AM]

                          Name:John Thomason newboats@quik.com, [Msgid=255277]
                          Adding foils to 27-ft catamaram

                              • There are resources for you on the IHS website, but no quick and easy answer. Some thoughts that occur to me include:
                              • Take a look at our books page

                          http://www.foils.org/popbook.htm

                              • . There are some titles on this subject, all out of print I believe. However they can be obtained with a bit of effort from a library, used bookstore or the eBay on line auction site.
                              • The Amateur Yacht Research Society has published a number of technical papers on the subject of hydrofoils, and these are all still available. There is a link to AYRS from our links page at

                          http://www.foils.org/linksout.htm

                              • The IHS has for sale the set of David Keiper files on adding foils to cats, however this design work was aimed at much smaller Beach Cats. Info on these files is at

                          http://www.foils.org/ihspubs.htm

                              • . After David Keiper died, his work was continued and perfected by Dave Carlson. His email and website addresses can be found on our site by using the search engine on the main page. He is a good source of practical as well as theoretical information.
                              • You might want to consider getting a boat that is already foil equipped and was designed for it. The Catri is such a vessel. Information is on our site at

                          http://www.foils.org/catri.htm

                              • and at

                          http://www.foils.org/catri.pdf

                              • . When the designer Aldis Eglais first corresponded with us, he was offering to sell just the plans or the plans plus kit as an alternative to buying and shipping a fully manufactured vessel… don’t know if this is still an option.
                              • Anyway, just some thoughts that may be of use to you.

                          [Date/Time=05-04-2002 – 8:27 AM]

                            Name:Barney C. Black webmaster@foils.org, [Msgid=255279]
                            Adding foils to 27-ft catamaram

                                • John
                                • Over the years I have seen many mods made to Stiletto Cats. The Stilletto has always seemed to draw out the adventurers in the sailing world due to their High performance and rasonable price. They have very light foam sandwich hulls which might be very difficult to attach foils to, if you can not entirely use the crossbeams.
                                • I have not seen any Hydrofoil conversions but many other Stilletto projects can be found in back issues of Multihull Magazine, Quincy Mass.
                                • They have a web site and their owner publisher is very user friendly.
                                • Best of Luck
                                • Bill White

                            [Date/Time=05-04-2002 – 9:23 PM]

                              Name:Bill White asst Webmaster whitewn@speakeasy.net, [Msgid=255479]
                              PK – A Small Hydrofoil Sailboat

                                  • Dear IHS members,
                                  • Bill White of IHS asked if I would share my experiences in developing and sailing a small sailing hydrofoil. I am happy to do so. Below is a brief account of my 10 year adventure with PK.
                                  • Thanks to my web site (and the International Hydrofoil Society site), I look forward to and receive a lot of e-mails on PK Hydroptère de loisirs (Small Hydrofoil Sailboat. The address of this site changed last month.
                                  • The new address is:

                              http://membres.lycos.fr/monsonnec/

                                  • (Editors note: This is an extensive personal site of sailing hydrofoils)
                                  • PK History:
                                  • I started the design of PK in 1992 and the construction in 1993.
                                  • This boat is exclusively made with some “Recycled materials”! For example the rail of the “rotary bench”, is an old bicycle wheel! As a result, I designed and built PK for approximately $800 £.
                                  • PK flew the first time in 1997 without the system for the modification of the incidence and with a classical cat boat sail. When I sail I don’t want to have some spectators chuckle (if PK don’t fly!) and that’s the reason why, I just have bad photos of PK in flight!
                                  • The latest version, (it’s the same hull and floats since the start, but I changed all the other parts), has been ready since last summer (July 2001). Unfortunately I have had a problem with my backbone since the same date! As a result, I don’t know if I am going to sail soon and I don’t have photos of this version on the sea!
                                  • The particular points of this latest version of PK are:
                                  • Rotary bench
                                  • Rigid rig and sailboard sail
                                  • T foils with ” incidence control system”
                                  • Rotary floats (to protect the foils)
                                  • Main dimensions:
                                  • Length Overall 5 m
                                  • Length Hull 3.85 m
                                  • Beam 4.8 m
                                  • Sail area 7.5 m2
                                  • Weight 70 Kg
                                  • Built For Only $800.00£!
                                  • Please note that I cannot send the plans of PK, because I am not a naval architect and I think PK is not perfect, it’s just a prototype! However, I would be happy to discuss her design and construction over the IHS Bulletin Board.
                                  • Thank you very much
                                  • Best regards
                                  • Frédéric Monsonnec
                                  • PS:
                                  • I have enclosed different photos of PK at diverse ages below:
                                  • Before the first test of the fifth version in 1997: PK5 Stern-97

                                  • and PK5 Bow view-97:

                                  • Central hull during the first flight in 1997:

                                  • First test of the “incidence control system” in 2000:

                                  • PK6 in my garden last year! :

                              [Date/Time=07-04-2002 – 4:22 PM]

                                Name:Raiola Giancarlo raiola.roberto@tin.it, [Msgid=278825]
                                Attached File  “PKxICS-00~jpg.zip” – size 40357   Click Here To Download
                                Kite Sail Possibilities

                                  ViewThread

                                      • Last week I read an article about hydrofoils on yahoo’s boomerangtalk… Besides building rangs I like driving my kitebuggy. Unfortunately the beaches here are small, but…. with a lake nearby, such an article and an interest in foils……. ;-). Modern powerkites are very efficient sails with some great advantages over
                                      • normal sails. I wonder if one could power some sort of lightweight 1-seater hydrofoilbuggy. It’s obvious though (after finding the IHS-site ;-), that I still have quite some reading to do… Thanks to everyone at the IHS for making that possible ! — Bart Derks,
                                      • the Netherlands

                                  [Date/Time=07-12-2002 – 7:57 PM]

                                    Name:Bart Derks bderks@zeelandnet.nl, [Msgid=281893]
                                    Kite Sail Possibilities

                                        • There have been several articles on kite sails in the Amateur Yacht Research Society publications. You can get back issues, but you will have to pay for them! It might be possible to find back issues in a library somewhere. There is an index of the articles mentioning kites on the web at:

                                    http://www.users.globalnet.co.uk/~fsinc/yachts/aindex/ai08.htm

                                        • .

                                    [Date/Time=07-12-2002 – 7:59 PM]

                                      Name:Barney C Black webmaster@foils.org, [Msgid=281897]
                                      Kite Sail Possibilities

                                          • The leading proponent of kite sails is Dave Culp (email:

                                      dave@dcss.org

                                          • ), who’s also the AYRS webmaster.

                                      [Date/Time=07-12-2002 – 8:01 PM]

                                        Name:Tom Speer me@tspeer.com, [Msgid=281901]
                                        Kite Sail Possibilities

                                            • Scott
                                            • There is a lot of Kite Board sailing on the Outer Banks at Cape Hatteras where I vacationed a few weeks ago. The boards are short versions of windsurfers boards or more like snow boards.
                                            • If I had the time and was a bit younger I think one could add a set of Hydrofoils to these kite boards and about double the speed. The foils would be similar to the ones that have been adapted for water skiing. There are several on our IHS web site at

                                        http://www.foils.org/linksout.htm#buyit

                                            • A good example is the sky ski

                                        http://www.skyski.com/home.htm

                                            • Best of luck
                                            • Bill White

                                        [Date/Time=07-13-2002 – 12:00 AM]

                                          Name:Bill White whitewn@speakeasy.net, [Msgid=281938]
                                          Windrider Rave Top Speeds

                                            ViewThread

                                                • Very nice website, lots of interesting and useful information! I’m interested in sailing hydrofoils, since I saw a Windrider Rave sailing near Toronto, Canada a few weeks ago. It is a commercially
                                                • available hydrofoil trimaran. I see a lot of articles on your website about sailing hydrofoils, but nothing about the Windrider Rave. Their website is

                                            http://www.hydrofoils.com

                                                • , and

                                            http://www.windrider.com

                                                • . The Dutch over here claim a max speed of 41.5 knots, and I read that a French sailor has even gotten to 43 knots with the Rave.
                                                • Another sailing hydrofoil I noticed, is the hydroptere,

                                            http://www.hydroptere.com

                                                • , and is mentioned on your site.

                                            [Date/Time=09-14-2002 – 11:27 AM]

                                              Name:Mark-Jan Bastian markjan@xs4all.nl, [Msgid=309662]
                                              Built hydrofoil sailboat for only $800

                                                  • Thank you for your web site, it’s really a “mine of information”! I have a little hydrofoil boat and a web site: PK Hydroptère de loisirs (Small Hydrofoil Sailboat Built For Only $800.00! ). The address of this site is

                                              http://membres.lycos.fr/monsonnec/

                                                  • Fred

                                              [Date/Time=09-14-2002 – 7:57 PM]

                                                Name:Frédéric Monsonnec frederic.monsonnec@wanadoo.fr, [Msgid=309784]
                                                Windrider Rave Top Speeds

                                                    • Mark
                                                    • Thanks for the inputs. We do mention the Windrider Rave model on our Links page at

                                                http://www.foils.org/linksout.htm

                                                    • . Their web address keeps changing, so we appreciate the input so we can keep it current. The Rave is an exciting boat to see in action, though I have never seen it at the speeds you mention.
                                                    • Bill White
                                                    • IHS BBS manager

                                                [Date/Time=09-23-2002 – 7:04 PM]

                                                  Name:Bill White whitewn@speakeasy.net, [Msgid=313647]
                                                  Windrider Rave Top Speeds

                                                      • Check out:http://www.monofoiler.com for a whole series of monofoiler sailing hydrofoils. Some sail on just two foils,one on the daggerboard and one on the rudder. Generally, monofoilers won’t be as fast as boats like the Rave that develop their own righting moment–but they have tremendous “fun” potential…

                                                  [Date/Time=09-24-2002 – 9:15 AM]

                                                    Name:Doug Lord lorsail@webtv.net, [Msgid=313860]
                                                    Windrider Rave Top Speeds

                                                        • Check out the Hobie Tri-foiler. The Windrider and Tri-foiler are both fast designs, and both similar. But the Hobie has a better control system. The Hobie uses a surface follower system that is very effective. The Windrider uses a system that has it’s control input beside the strut instead of in front of it. It requires you to adjust bungee’s to keep the foils trimmed. What is the sense in that? It seems to me that the foil control system should do just that, control the foils. There are plenty of other things to keep the pilot busy in a 35+ mph sailboat, without having to keep the foils trimmed. I have heard that there are some people that can successfully tack a Windrider without coming off the foils, but nobody has ever been able to do it in front of me. But I have seen a first-timer tack a Tri-foiler with little difficulty. Either way, both of these boats bring a whole new dimension to sailing.
                                                        • Scott Smith

                                                    [Date/Time=09-24-2002 – 10:37 AM]

                                                      Name:Scott Smith ssmith@syntheon.com, [Msgid=313899]
                                                      Windrider Rave Top Speeds

                                                          • Hi Scott,
                                                          • The Hobie Tri-foiler certainly has a neat and simple foil control system, but the ‘wand’ approach used on the ‘Rave’ also seems to work well. From what I have read about sailing the Rave, it should not be necessary to manually control the foils to keep the boat flying in a stable manner. There is however a capability to control the foils manually if that is what the crew want to do.
                                                          • Christopher Hook, who first developed a workable fully submerged hydrofoil craft, employed manual surface skimming attitude sensors that projected far forward of the bow foils. Apart from looking somewhat ungainly, these would undoubtedly have been subject to a fair bit of damage in service, even if just bumping into a wharf occasionally. I have often wondered whether it is really necessary for such mechanical surface sensors to actually project far forward of the foils. The Rave seems to demonstrate well enough that this isn’t necessary as it runs well in waves while foilborne. For small waves that are typically short, it is not necessary for the hydrofoil craft to react to them by rising up, rather it can just continue through them straight and level. Having a foil sensor far forward is therefore no advantage in that case. For long waves relative to the boat it does not matter much whether they are detected directly in line with the foils or one or two metres in front of the foils as the wave elevation will not be very different between those locations. It would therefore only be for waves that are around the length of the boat that the position of the surface sensors would have a noticeable effect on the motion of the craft.
                                                          • A question someone may be able to answer: For large electronically controlled fully submerged hydrofoils like the Boeing Jetfoil and PHM that could happily cruise in large waves at 40+ knots, how far ahead of the boat did the bow mounted surface sensor actually look to detect oncoming waves? How did the signal from that sensor get coupled with the signals from all the accelerometers mounted around the boat that were also used to achieve a smooth ride?
                                                          • By the way, there is some nice footage in the video by Arcadia Entertainment “Hydrofoils – Flying on water” that shows a Rave doing a 180+ degree turn (downwind) in the blink of an eye, and remaining foilborne for a good portion of that evolution. Given that can be done, tacking the Rave while remaining foilborne would seem straightforward.

                                                      [Date/Time=09-26-2002 – 7:41 AM]

                                                        Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=315018]
                                                        Windrider Rave Top Speeds

                                                            • There is much truth to what you say, but don’t get sailboat dynamics confused with powerboat dynamics, and scale means a lot as well. A Boeing Jetfoil is a big, long boat. The length of the boat, coupled with it’s weight, means that it pitches forward and back comparitively slowly compared to a smaller boat. So the inputs to the control system require a slower rate than for a small boat. It’s the difference between balancing a broom on your finger and balancing a pencil. For most foil powerboats, the best ride is achieved when there is little control input from waves (fast rate input), and most input is from the height above surface sensor (slow rate input). Basically, fly it straight, compensate slowly for altitude and large, slow swells, and the smaller waves will pretty much take care of themselves. Grumman demonstrated this with a variant on their foilboat that used submerged foils. The control system was actually mounted directly to the trailing edge flap of the front foil. The system worked well. Also, powered foilboats don’t have to continuously deal with large side to side forces, except while turning. It gets different for sailboats like the Windrider and Tri-foiler, however. The foils aren’t just compensating for altitude, they also have to control heeling forces (left & right) and pitching forces (front & back). In variable winds, the forces acting on the sail(s) can be very high, then a split second later drop to nothing as the wind dies, or worse, changes directions. On a powerboat, the thrust line doesn’t change, so the distribution of weight among the foils is predictable. Not so with a small sailboat. As I recall, the sensor on the Windrider is spring-loaded towards the down position with a bungee strectched across to the cockpit. While on a reach, you adjust the tension on the bungee until the foil rides at the proper height. If you change direction, or if the wind changes, you have to re-trim the sensor tension to keep the boat stable. This may be why they show a downwind tack in the video. There is only a momentary loss of power, and the pilot doesn’t have a large burden to keep the boat up. Tacking upwind is trickier, as the powerloss can be longer and have more effect on the foilboat’s trim. But the real proof is in the pudding. I have seen an amateur tack a Tri-foiler in moderate wind, with no apparent trouble. I have yet to see anyone tack a Windrider in any wind, with any pilot. If someone out there has a video of that, I would love to see it. The Windrider seems to have a growing popularity lately. It is a little cheaper, but is there another reason for this? Maybe it can do some things I am not aware of. If anyone out there has had any real experience with both the Tri-foiler and the Windrider, I would love to hear it. Maybe I’ll even apologize and shut up 🙂
                                                            • Scott Smith

                                                        [Date/Time=09-26-2002 – 8:38 AM]

                                                          Name:Scott Smith ssmith@syntheon.com, [Msgid=315058]
                                                          Windrider Rave Top Speeds

                                                              • Martin,
                                                              • As for the height sensors they where mounted looking directly down at the water. The ACS control system was set up to maintain a constant 1 “g” force on the deck via accelerometers and gyro’s. The Hull mounted accelerometers where located on the PHM at the to rear struts and the forward one was mounted just aft of the forward strut. The accelerometers dampen out the effects of the height sensors seeing chop by clamping the signal to the hydraulic systems.

                                                          [Date/Time=09-28-2002 – 11:30 AM]

                                                            Name:”Jake” Jakobson Jakobson@bellsouth.net, [Msgid=316107]
                                                            Windrider Rave Top Speeds

                                                                • Scott,
                                                                • Thanks for your reply. I follow what you are saying about the dynamics of sailboats and the effect of the scale on the motions of a craft.
                                                                • Just reinforcing your point about scale, for a case where all proportions of a boat and the waves it is travelling in are scaled down and if the speed of the boat is also “Froude Number” scaled, the time period in which successive waves are encountered is reduced by a factor of the square root of the ratio of model to full size length. For example, a 1:20 scale model of a hydrofoil boat will encounter the corresponding “1:20 scale” waves in only 22% of the time of its full size counterpart, or around 4.5 times faster.
                                                                • Although there is an agent for the sale of the Windrider Rave in Australia, I have not seen any first hand. I have not seen any Trifoilers either so I can’t comment about their relative characteristics!

                                                            [Date/Time=09-28-2002 – 9:12 PM]

                                                              Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=316268]
                                                              Windrider Rave Top Speeds

                                                                  • Jake,
                                                                  • Thanks for that straightforward response to my question. It beats trying to find that out by tracking down and then reading through long and complex technical papers!

                                                              [Date/Time=09-28-2002 – 9:16 PM]

                                                                Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=316270]
                                                                First sailing Bi-foiler

                                                                    • Just thought I should set the record straight about the first ever monofoiler…(well I call it a bi-foiler) Here are some details

                                                                http://www.moth.asn.au/development/development_ward_2002.html

                                                                    • We should also not forget the amazing development by Rich Miller of the first true and only “monofoiler”, a high performance sailboard with just one foil in the water..like a unicycle!

                                                                [Date/Time=11-11-2002 – 1:43 AM]

                                                                  Name:Ian Ward ianward@ozemail.com.au, [Msgid=336265]
                                                                  First sailing Bi-foiler

                                                                      • Dr. Ward ,it looks like you have done a tremendous job! Check out monofoiler.com for other monofoiler’s such as Brett Burvills Moth sailing on just two foils(one on the daggerboard and one on the rudder).And recently ,John Ilett’s monofoiler sailing the same way but with an addition of a wand based altitude control system. Also included on the site are pictures of David Lugg’s International 14 sailing on just two foils with manual control.
                                                                      • If you would like I’ll be more than happy to add your boat to the others on

                                                                  www.monofoiler.com

                                                                      • When did you first sail your boat on two foils?
                                                                      • Congratulations on a great job! Doug Lord

                                                                  lorsail@webtv.net
                                                                  [Date/Time=11-11-2002 – 8:19 AM]

                                                                    Name:Doug Lord lorsail@webtv.net, [Msgid=336328]
                                                                    Rich Miller`s Hydrofoil Sailboard

                                                                        • On the IHS website there is a reprint of an article about Rich Miller’s hydrofoil sailboard. Go to

                                                                    http://www.foils.org/miller.htm


                                                                    [Date/Time=11-22-2002 – 4:05 AM]

                                                                      Name:Barney C. Black webmaster@foils.org, [Msgid=341779]
                                                                      Catri Hydrofoil in Guaraní and Tupi

                                                                          • With regard to the glossary of hydrofoil-related terms at

                                                                      http://www.foils.org/glossary.htm

                                                                          • , There was no word for “Hydrofoil” in South America’s main native languages, the Guarani and Tupi, BUT both languages use the same word for “Water” (“Y” or “I”) as well as the same word for “Wing” (“Pepó”).
                                                                          • Also, adding words is a valid resource in both languages, exactly as in Latin or Greek. For example: “pepó” is derived from “pe” + “pó” = “flat” + “hand”.
                                                                          • As a consequence, the word “Hydrofoil” can be translated directly into “Y’pepó” and the meaning is clear in the course of normal conversation. The roots were double checked in three different Guarani dictionaries and two Tupi dictionaries and the correctness of the composed word was verified with many Guarani speakers, among them two teachers of the language.
                                                                          • I searched for this word while trying to find ideas to name my future hydrofoil assisted folding trimaran model “Catri 27R” designed by Mr. Aldis Eglajs, from Latvia. By the way, I found and read his text in your website before my first contact with him and now the boat will be the first of a serial production in Brazil. I shall name it “Y’pepó” if my wife and daughter allow me…

                                                                      [Date/Time=11-24-2002 – 9:15 AM]

                                                                        Name:Luiz Schechter sysfx@yahoo.com, [Msgid=342713]
                                                                        Hydrofoil Voyager E-Book

                                                                          ViewThread

                                                                              • I’m interested in the e-book on the

                                                                          WILLIWAW

                                                                          [Date/Time=12-03-2002 – 5:57 PM]

                                                                            Name:Byron E. Wallin zomars@hotmail.com, [Msgid=346366]
                                                                            Hydrofoil Voyager E-Book

                                                                                • The late Dave Keiper’s book

                                                                            Hydrofoil Voyager

                                                                                • , which tells the story of designing and building the hydrofoil

                                                                            WILLIWAW

                                                                                • and sailing her solo across the Pacific Ocean, is a terrific book… a mixture of adventure story and “how-to” book. You can read the full review of this by the IHS newsletter at

                                                                            http://www.foils.org/williwaw.pdf

                                                                                • Unfortunately, Dave Keiper died and the book has gone out of print, along with the companion videotape of

                                                                            WILLIWAW

                                                                                • . IHS first attempted to interest some publishers in the idea of reprinting this book commercially, but was unsuccessful. Then, IHS had the idea to create an E-Book version with clips from the video to be offered at cost on CD-ROM. We even went so far as to scan the book into Adobe Acrobat with bookmarks, internal hot links, and full optical character conversion. In fact, the remnants of Dave’s website as preserved by his brother Frank state (incorrectly) that the eBook is available (see

                                                                            http://www.wingo.com/dakh/voyager.html

                                                                                • ). Unfortunately however, we were not able in the end to get unanimous consent to offer the book in this fashion without remuneration to the heirs.
                                                                                • Meanwhile, this excellent book remains unavailable to the public; I have not seen even one copy go up for auction on eBay over the years since Dave died. Attention is shifting inexorably away from Dave’s legacy in the hydrofoil sailboat field to focus on currently active efforts such as the racing Moth Class experiments with foils and the Catri sailboats designed by Aldis Eglajs. At one point, IHS member Tom Speer was planning a follow-on to

                                                                            WILLIWAW

                                                                                • (see

                                                                            http://www.basiliscus.com

                                                                                • ) but I do not know the current status of this idea; the site was last updated in 2001.
                                                                                • The key to getting permission to reprint the book is to interest a commercial publisher or other company to do so in a way that would benefit the heirs financially. IHS was not able to do this, but we certainly did not exhaust all possibilities. Perhaps someone else would be willing to tackle this.

                                                                            [Date/Time=12-03-2002 – 6:25 PM]

                                                                              Name:Barney C Black webmaster@foils.org, [Msgid=346383]
                                                                              A Light, Cheap Foiler Dinghy

                                                                                ViewThread

                                                                                    • Bi-foiler and small dinghy foiler development is happening quite fast at present by a few keen amateurs, I am sure there is a long way to go and we need a breakthrough… in the same way that Sailboards developed (It seems amazing to me that the Sailboard has proven to be such a breakthrough in efficiency compared with all other sailing craft, and yet it was never “designed” as such, it developed simply by empirical testing and in most cases the ideas of amateurs… where were the Mechanical engineers, Physicists, Mathematicians, Hydrodynamicists and Naval architects when this breakthrough in design was developed?).
                                                                                    • We seem to have an amazing resource of such talent within the IHS ranks, and I am sure we could together pro-actively design a better Moth based on hydrofoils and come up with a really good, simple, light and cheap foiler dinghy for everyone to enjoy!
                                                                                    • It would be good if IHS would sponsor a special development discussion section on the website, where perhaps some other members or interested parties may be able to contribute answers and ideas to many of the questions that I have. For example:
                                                                                    • Why can’t I sail foilbourne upwind in under 15kts of wind, how to fix this?
                                                                                    • Is semi foiling upwind faster than displacement sailing?
                                                                                    • Would a foiled bow rudder work?
                                                                                    • How to maintain control at high speed?
                                                                                    • Why can’t I sail foilbourne upwind in under 15kts of wind, how to fix this?

                                                                                http://imca-wa.freeyellow.com/
                                                                                [Date/Time=01-04-2003 – 3:07 PM]

                                                                                  Name:Ian Ward ianward@ozemail.com.au, [Msgid=358650]
                                                                                  Re; A Light, Cheap Foiler Dinghy

                                                                                      • As a controls guy, I believe that we underestimated the human’s ability to stabilize a sailboard. Forty years ago in ‘The 40 knot sailboat’, Bernard Smith (

                                                                                  http://www.geocities.com/aerohydro/Covers.htm

                                                                                      • ) predicted that the ultimate sailboat would have only a single foil in the water, but he didn’t imagine that guys could actually balance on their rudder/foil! The same thing goes for the hydrofoil ‘air chair’, for the first few tries it seems impossible. People are slow, but within the constraints of our ‘neuromuscular lags’, we are amazing adaptive controllers.

                                                                                  [Date/Time=01-05-2003 – 2:59 PM]

                                                                                    Name:jim hynes jhynes@socal.rr.com, [Msgid=358944]
                                                                                    Builder of Catri 27 Hydrofoil Sailboat

                                                                                        • We have a boatyard in Brazil that manufactures a sailing trimaran with hydrofoils that flies, the Catri 27. Please visit

                                                                                    http://www.multicascos.com

                                                                                        • . Currently the site is only in Portuguese but in a couple of months it will be also in English. If you want more info please contact me!


                                                                                    [Date/Time=01-06-2003 – 8:10 AM]

                                                                                      Name:Dr. Raul Díaz Langou multicascos@multicascos.com, [Msgid=359235]
                                                                                      books a nd articles

                                                                                          • Where can I get Bernards Smith’s books and articles? thank you Vincent Browne.

                                                                                      [Date/Time=01-06-2003 – 2:53 PM]

                                                                                        Name:vincent browne vincent_himself@hotmail.com, [Msgid=359379]
                                                                                        Re; Re; A Light, Cheap Foiler Dinghy

                                                                                            • Jim,
                                                                                            • You have made a nice observation. I tend to find it hard to understand how hydrofoils with such apparent little transverse stability as the current series of fully submerged sailboats with only centreline foils can be operated, yet Ian and others have shown it can be done! That doesn’t only apply to these sailboats and the air chair water skis that you also mentioned, but also solar powered one-man hydrofoils, pedal powered hydrofoils and now even hydrofoil surfboards!
                                                                                            • For those with a really technical bent, the mathematical modelling of the human operator using skilful body weight shift to maintain stability of a solar powered hydrofoil has been examined in the following reference:
                                                                                            • Terao, Yutaka; “Lateral and Roll-Yaw Coupled Motion Control of Hydrofoil Craft”, Proceedings of the 7th International Conference on Stability of Ships and Ocean Vehicles (STAB 2000), 7-11 February 2000, Launceston, Tasmania, Australia. AMECRC Ltd, Editor: Martin Renilson. pp 542 – 550.
                                                                                            • For me, I just prefer to see these spectacular craft running foilborne. The Arcadia Entertainment “Hydrofoils – Flying on Water” video shows some good footage of such solar and human powered craft and air chair water skis in action.

                                                                                        [Date/Time=01-07-2003 – 12:41 AM]

                                                                                          Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=359572]
                                                                                          Where to get old books, mags

                                                                                              • A large listing of popular books and magazines dealing with hydrofoils is featured on the IHS website at

                                                                                          http://www.foils.org/refpop.htm

                                                                                              • . Unfortunately, IHS is not a source for most of these documents. To obtain copies, Try local libraries, used book stores and antique shops. Local libraries may have access to the book or magazine you want through inter-library loan even if the particular branch does not have it. Most bookstores, including the chain bookstores like Borders have access to a service that locates out of print books. Also try the on-line auction services at Ebay, Amazon.com, and Yahoo… particularly Ebay. Sooner or later, just about everything shows up for sale on Ebay or its companion site Half.com. Amazon.com allows you to “preorder” a used copy of any book in its massive listing (though Bernard Smith’s book is not listed).

                                                                                          [Date/Time=01-09-2003 – 1:23 PM]

                                                                                            Name:Barney C Black webmaster@foils.org, [Msgid=360565]
                                                                                            Cat Needs Better Motion Into Chop

                                                                                              ViewThread

                                                                                                  • I own a 38 foot racer cruiser sailing catamaran in Puerto Rico. I have changed the motor arrangement to get better speed while motoring, and can now motor at 14 knots in flat water.
                                                                                                  • I am interested in adding fins to the sterns of the catamaran, to help
                                                                                                  • reduce pitching while sailing and motoring into chop. My question is, can you recomend a person or company that could help me evaluate the possibility of adding fins to my cat to help give it a better motion while moving through chop/ waves?
                                                                                                  • As you can imagine this is a recreational sailboat, and I would only add fins to my cat if it is something that I can do economically (they would be fixed fins).

                                                                                              [Date/Time=01-24-2003 – 1:59 PM]

                                                                                                Name:Tony Amador tonyamad@coqui.net, [Msgid=366530]
                                                                                                Re; Cat Needs Better Motion Into Chop

                                                                                                    • My experience on sailing cats is limited to having sailed a Prout 45 from Bermuda to Annapolis. My experience was that the boat pitched uncomfortably while beating and the worst (most extreme) motion was forward; aft there was considerably less motion and it was far more comfortable aft. If your boat behaves in the same manner, I think adding fins aft would gain you very little. At least one of the power cats at the Annapolis power boat show had bulbous bows to reduce pitching.

                                                                                                [Date/Time=01-25-2003 – 6:26 PM]

                                                                                                  Name:Michael W. Preis mpreis@liu.edu, [Msgid=367041]
                                                                                                  Re; Cat Needs Better Motion Into Chop

                                                                                                      • Paul Bieker (photo below) has designed these kinds of foils for International 14’s. He’s a Naval Architect in Seattle. His email:

                                                                                                  pbieker@serv.net


                                                                                                  [Date/Time=01-26-2003 – 8:21 AM]

                                                                                                    Name:Tom Speer me@tspeer.com, [Msgid=367269]
                                                                                                    Re; Cat Needs Better Motion Into Chop

                                                                                                        • Tony,
                                                                                                        • I tend to agree with Michael. If you want to reduce pitching motions, it would probably be better to add an anti-pitching fin or fins as close as possible to the bow of your boat.
                                                                                                        • The Royal Australian Navy fitted an anti-pitching fin to the bow of its mine hunter catamarans and this seems to have been beneficial in reducing pitching motions. The fin spanned the entire gap between one hull and the other. These craft had a speed of about 8 knots but would have had a displacement significantly greater than your own boat.
                                                                                                        • Unless the fins are particularly well designed, you should anticipate some speed loss due to the additional drag that they will create. Also, there is a possibility that in some sea conditions, such as in following seas, the pitching motions may become worse if the fins are purely passive.

                                                                                                    [Date/Time=01-26-2003 – 8:52 AM]

                                                                                                      Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=367276]
                                                                                                      Volantis

                                                                                                        ViewThread

                                                                                                            • Does any one know of the sailing hydrofoil Volantis? I’ve heard it is being built in Hawaii by the designer of the Rave Windrider.

                                                                                                        [Date/Time=01-28-2003 – 7:51 PM]

                                                                                                          Name:Byron Wallin byron@hulagirllamp.com, [Msgid=368609]
                                                                                                          Re; Volantis

                                                                                                              • You can find citations of magazine articles as well as archived correspondence on the subject of Volantis by using the search engine at the bottom of our main page at

                                                                                                          http://www.foils.org/

                                                                                                              • . Just enter the word Volantis and click search.

                                                                                                          [Date/Time=01-29-2003 – 9:57 PM]

                                                                                                            Name:Barney C. Black webmaster@foils.org, [Msgid=369337]
                                                                                                            Re; Volantis

                                                                                                                • Dr. Sam Bradfield has been a consultant on the project. However, it’s not under construction yet. I believe they are still trying to raise money for it and refine the mission requirements. Unlike most sailing hydrofoils, this one is eventually intended to be unmanned.

                                                                                                            [Date/Time=02-04-2003 – 1:46 AM]

                                                                                                              Name:Tom Speer me@tspeer.com, [Msgid=371849]
                                                                                                              Re;Cat Needs Better Motion Into Chop

                                                                                                                  • The problem with fins at the bow is that one of the requirements of a sailing catamaran is that it resist pitchpoling (capsize forward or diagonally). A fin at the bow can go to a negative angle of attack, pulling the bow down and contributing to dangerous situation. So a fixed fin at the bow is probably not a good idea. This leads to adding a control system, and before you know it you’ve got a full-blown hydrofoil stabilizer development project. Not that there isn’t merit in that. But a fin at the stern will contribute to stability as well as damping, although the damping is less than if it were at the bow.
                                                                                                                  • As far as I know the HYSUCAT approach hasn’t been applied to sailing catamarans yet. Maybe a foil stretching between the sterns?

                                                                                                              [Date/Time=02-08-2003 – 2:46 PM]

                                                                                                                Name:Tom Speer me@tspeer.com, [Msgid=374632]
                                                                                                                Foilboard

                                                                                                                    • Hello,

                                                                                                                    • My name is Gérard Delerm (I am french)
                                                                                                                    • I already show my home page about “Le Foilboard” on the IHS site.
                                                                                                                    • It is a sailboard with hydrofoils project.

                                                                                                                http://gerard.delerm.free.fr

                                                                                                                    • There are now somes updates in the english version (link NEWS on the contents page).

                                                                                                                [Date/Time=02-10-2003 – 9:00 AM]

                                                                                                                  Name:Gérard Delerm gerard.delerm@free.fr, [Msgid=375459]
                                                                                                                  Hydrofoil Moth Sailing Videos and Stills

                                                                                                                      • You guys might be interested in having a look at the links below. The first link is a collection of six videos showing the hydrofoiled Moth. The second link shows several still photos of the Moth both in and out of the water. Each photo has a good descriptive caption.

                                                                                                                  http://www.moth.asn.au/news/wa_2003_summer.html
                                                                                                                  http://www.moth.asn.au/development/wa_dec_2002.html

                                                                                                                      • Any comments or thoughts are appreciated.

                                                                                                                  [Date/Time=02-24-2003 – 4:39 AM]

                                                                                                                    Name:Rohan Veal rohan@moth.asn.au, [Msgid=383699]
                                                                                                                    IHS members in So Cal

                                                                                                                      ViewThread

                                                                                                                          • Is there anyone here from southern California working on hydrofoil sailboat designs? I would be interested in learning about your projects.

                                                                                                                      [Date/Time=03-15-2003 – 2:31 AM]

                                                                                                                        Name:Steve Salani socasteve@earthlink.net, [Msgid=396535]
                                                                                                                        SLO Foils

                                                                                                                            • hey hey – I´m in San Luis Obispo. I don`t have anything to look at, but would love to hear what else is going on. Where are you/have you heard from anyone?
                                                                                                                            • Cheers,
                                                                                                                            • Henry

                                                                                                                        [Date/Time=03-19-2003 – 5:21 PM]

                                                                                                                          Name:Henry hbomb59@hotmail.com, [Msgid=399556]
                                                                                                                          hydrofoils? on a sailing cat

                                                                                                                            ViewThread

                                                                                                                                • I have a 7 meter sailing catamaran that I use in the Indian Ocean off the coast of Kenya. Its an older (20 years?) Italian boat designed more for use on lakes than open ocean. Its bows are sharp and narrow making them very sensitive to weight up front. In larger waves they will tend to dig in, making water wash over the bows, of course making them dig in further. I would like to make the bows more bouyant. One way I have been considering is the addition of a couple of “hydrofoils” just below the waterline on each side of each hull. I envision small wings 2 or 3 inches wide and perhaps a foot or 18 inches long fibreglassed onto the side of the hulls with an angle that causes the water to push up on the bows as they move through the water.
                                                                                                                                • I figure that at 8 to 10 knots I would like to get around 3-400 pounds of lift TOTAL from all four hydrofoils. This would allow a couple of people to ride forward on the cat without hurting performance and would keep the bows up when maneuvering in wind and waves.
                                                                                                                                • I have no idea if this is a practical solution to this problem. If it is I have no idea of the actual size of the hydrofoils. So I am soliciting ideas from those who know much more than myself about this sort of thing to try and lead me to a reasonable decision as to whether or not I should try this.

                                                                                                                            [Date/Time=05-26-2003 – 8:24 AM]

                                                                                                                              Name:Paul Cowles paul@pactke.org, [Msgid=441573]
                                                                                                                              Re; hydrofoils? on a sailing cat

                                                                                                                                ViewThread

                                                                                                                                    • I’m adding to my question slightly. I see by looking over the site I am actually talking about adding ‘fins’ rather than hydrofoils. The idea is the same though to ‘lighten’ the bows when I am underway. Cheers.

                                                                                                                                [Date/Time=05-26-2003 – 8:56 AM]

                                                                                                                                  Name:Paul Cowles paul@pactke.org, [Msgid=441586]
                                                                                                                                  Re; hydrofoils? on a sailing cat

                                                                                                                                      • In the late 60’s this was tried on many cats. The main problem is that if you are hit by a gust and bury the bow below the angle of attack of the fixed foils on the bow, then you can have some very embarrasing cartwheels. Angle the foils too high to prevent this and all you do is slow the boat rather than give lift.
                                                                                                                                      • I think the best answer is to use pivoting foils, with a sensor. This way you can always get optimum lift. If you are adventureous the HYSUCAT idea may also be a winner. see

                                                                                                                                  http://www.hydrospeed.co.za/

                                                                                                                                      • An alternative is to put T foils on the rudders to reduce pitching and diving. This works quite well, involves no moving parts and is simple to add.

                                                                                                                                  [Date/Time=05-26-2003 – 11:23 PM]

                                                                                                                                    Name:Ian Ward ianward@ozemail.com.au, [Msgid=441941]
                                                                                                                                    re; Foils on Sailing cat

                                                                                                                                        • Paul
                                                                                                                                        • Be Sure to check out our IHS Archives: Posted Messages and Frequently Asked Questions (FAQs) at

                                                                                                                                    http://www.foils.org/posted.htm

                                                                                                                                        • They contain lots of information from earlier converstations on this subject.
                                                                                                                                        • Bill White

                                                                                                                                    [Date/Time=05-28-2003 – 6:39 PM]

                                                                                                                                      Name:Bill White whitewn@speakeasy.net, [Msgid=443265]
                                                                                                                                      Want a ride on Hydrofoil

                                                                                                                                        ViewThread

                                                                                                                                            • I have been studying HYDROFOIL designs, and think I have “nailed” it. Now need to ride on someone’s craft. I live in South Florida but am willing to go anywhere in NA for an extended ride. Any one have an operating Hydrofoil Boat who can accomodate my request?

                                                                                                                                        [Date/Time=06-03-2003 – 7:32 AM]

                                                                                                                                          Name:Gerry Levine gerrymega@adelphia.net, [Msgid=446222]
                                                                                                                                          Re; Want a ride on Hydrofoil

                                                                                                                                              • I live in Miami. If you are looking for a ride on a hydrofoil sailboat, there is a place here that rents windriders. Drop me a line and I’ll look it up for you.

                                                                                                                                          [Date/Time=06-05-2003 – 6:41 AM]

                                                                                                                                            Name:Scott Smith ssmith@syntheon.com, [Msgid=447375]
                                                                                                                                            New Hydrofoil Sailboard Design Info

                                                                                                                                              ViewThread

                                                                                                                                                  • For those interested in the design and operation of hydrofoil sailboards, Rich Miller has created a 28-page photo-illustrated technical paper on the design, construction, and sailing of his hydrofoil sailboard. Look for the link to this document near the top of the page at

                                                                                                                                              http://www.foils.org/miller.htm

                                                                                                                                                  • .

                                                                                                                                              [Date/Time=06-15-2003 – 6:36 AM]

                                                                                                                                                Name:Barney C Black webmaster@foils.org, [Msgid=452969]
                                                                                                                                                Congratulations

                                                                                                                                                    • Thank you very much to Rich Miller for that technical report.
                                                                                                                                                    • Gérard

                                                                                                                                                [Date/Time=06-18-2003 – 6:11 PM]

                                                                                                                                                  Name:Gérard Delerm gerard.delerm@free.fr, [Msgid=455251]
                                                                                                                                                  First Unifoiler Scow Moth

                                                                                                                                                    ViewThread

                                                                                                                                                        • I would like to share some ideas and experience….
                                                                                                                                                        • I have recently modified an old non-winged scow Moth hull, placed a single foil on the centreboard and a retractable surface running foil at the bow. No rudder T foil at all. Total cost of materials to make the foils is about $200, even less if you simply modify your existing centreboard!.
                                                                                                                                                        • I took it out last Sunday and got it up and going in about 10-12 kts of wind. There are many things to improve yet, but in principle it all works fine, no capsizes and some good bursts of speed on reaches!. It is really amazing to realize it is possible to sail with only ONE foil in the water!.
                                                                                                                                                        • The principle is not new, Rich Miller has a sailboard already doing fantastic speeds up to perhaps 35 kts with a similar arrangement. This is just the first application to dinghies. There is a long way to go yet, but 35kt Moth is a real possibility
                                                                                                                                                        • This means it is possible to use existing, old boats and adapt them to foils. I see no need for a new range of specialist hulls just for foiling. In fact some of the older and more stable hulls may perform even better as they are still good in light winds. It is also relatively cheap to make the necessary modifications. The boat is launched in the same way as a normal dinghy. In conclusion, it is indeed possible to have a low cost, high speed, easy to handle foiler suitable for begginers and speed demons alike.
                                                                                                                                                        • In my opinon, most of the fears about foiling in sailing circles comes from not being able to imagine what is possible, not actually having a go and even worse, doing nothing to actively develop a solution! Some of those who looked at the original Brett Burville trifoil Moth contraption were horrified at its ungainly, impractical but fast foils and immediately wanted to ban these from the Moth class.
                                                                                                                                                        • It is only with imagination and some real drive from the Isletts, Rich Miller etc that we have made real progress, and I am sure there is a lot more to come in terms of simplification, speed, handling and low cost! There is only one way to find out, I encourage all of you to give it a go and develop your own solutions!
                                                                                                                                                        • I believe the International Moth class should be proud to be the only International sailing class currently prepared to allow foil development.
                                                                                                                                                        • Without such an open forum, Moths would have remained Scows and foiler development would have ceased at Trifoilers.
                                                                                                                                                        • In the long run I am sure Moths and all future sailing classes will benefit.

                                                                                                                                                    [Date/Time=11-10-2003 – 9:39 PM]

                                                                                                                                                      Name:Ian Ward ianward@ozemail.com.au, [Msgid=541387]
                                                                                                                                                      Re; First Unifoiler Scow Moth

                                                                                                                                                          • Hi Ian,
                                                                                                                                                          • Thank you for your message and congratulations for your work. Can you show somes pictures about your project please ?
                                                                                                                                                          • regards,
                                                                                                                                                          • Gérard

                                                                                                                                                      http://gerard.delerm.free.fr
                                                                                                                                                      [Date/Time=11-20-2003 – 1:00 PM]

                                                                                                                                                        Name:Gerard Delerm gerard.delerm@free.fr, [Msgid=547448]
                                                                                                                                                        Historic First Nationals on Foils!

                                                                                                                                                          ViewThread

                                                                                                                                                              • Just want to let those know that don’t that Rohan Veal of the Moth Class has an unsurmontable lead in the Australian Moth Nationals. He is sailing a Moth on hydrofoils! This is the first time in history that a hydrofoil equipped boat has won a Nationals using foils; it is one of the first times that a hydrofol equipped boat has won any major race series. It is clearly a dramatic step forward for hydrofoils and sailing in general!
                                                                                                                                                              • He has won five races against 30 plus boats by leads of three to nine minutes. In the race he won by nine minutes second place was also a hydrofoil!
                                                                                                                                                              • Rohans boat sails on just two foils: one on the daggerboard and one on the rudder. Altitude control is by use of a “wand” system. Stability is provided
                                                                                                                                                              • entirely by the crew. The boat and foils were built by John Ilett of Perth Western Australia and he deserves congratulations as well.
                                                                                                                                                              • Way to go Rohan!

                                                                                                                                                          [Date/Time=01-03-2004 – 8:35 AM]

                                                                                                                                                            Name:Doug Lord lorsail@webtv.net, [Msgid=566079]
                                                                                                                                                            Want to know more?

                                                                                                                                                                • Thanks again Doug, series is just finished. Of the ten heats, Rohan had 8 wins ,3rd and 4th. The 3rd and 4th are dropped races for the points tally so it was a cleen sweep. His top speed by on board GPS was just over 20 knots. For those that wish to see more here are some links.

                                                                                                                                                            http://www.moth.asn.au

                                                                                                                                                                • and

                                                                                                                                                            http://www.fastacraft.com
                                                                                                                                                            [Date/Time=01-03-2004 – 9:43 PM]

                                                                                                                                                              Name:John Ilett john@fastacraft.com, [Msgid=566365]
                                                                                                                                                              and a picture !

                                                                                                                                                                  • Rohan Veal sailing “White knuckle express” at the Australian championships in Queensland.

                                                                                                                                                              [Date/Time=01-04-2004 – 12:43 AM]

                                                                                                                                                                Name:John Ilett john@fastacraft.com, [Msgid=566418]
                                                                                                                                                                 Image Attached:  “Rohan-QLD.jpg”   Click Here To View
                                                                                                                                                                hull choices

                                                                                                                                                                  ViewThread

                                                                                                                                                                      • ive sailed moths for a while and am considering a new hull for foiling, i only have one question:
                                                                                                                                                                      • does a planing hull beat a displacement hull to 10 kts boat speed in lighter wind conditions.
                                                                                                                                                                      • what im trying to acheive is lift off in a wind range between 5 – 10 kts and after that i would like a low aerodynamic drag hull. im thinking of something similar to a formula sailboard for its planing but am concerned about the wetted surface area as opposed to a displacement hull similar to a rowing skull. although i only have 11 feet of LOA (width currently runs around 1ft)
                                                                                                                                                                      • ps: consider the weight of each hull to be the same.

                                                                                                                                                                  [Date/Time=02-04-2004 – 10:38 AM]

                                                                                                                                                                    Name:glen oldfield compositedesign@hotmail.com, [Msgid=583861]
                                                                                                                                                                    Re; hull choices

                                                                                                                                                                        • Glen,
                                                                                                                                                                        • If you were considering a larger boat, say one carrying several people, then the answer would definitely be that a slender displacement hull would have less resistance at 10 knots. If on the other hand you are looking at something as small and light weight as a Moth, then it is harder to clearly identify the best option as there will be a transition of least resistance from the displacement hull to the planing hull at a speed around what you are interested in.
                                                                                                                                                                        • In the Moth size range, the best performing boats these days seem to be the very slender displacement types. In higher wind speeds it could be expected that a planing hullform should give lower resistance. Of course by that stage, if foils are fitted, the hull should be clear of the water under those conditions anyway!

                                                                                                                                                                    [Date/Time=02-14-2004 – 9:19 AM]

                                                                                                                                                                      Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=596593]
                                                                                                                                                                      Re; Re; hull choices

                                                                                                                                                                          • If you are interested in the Moth class of boat fitted with hydrofoils go to this discussion group:

                                                                                                                                                                      http://boatdesign.net/forums/showthread.php?t=2447
                                                                                                                                                                      [Date/Time=02-18-2004 – 1:41 AM]

                                                                                                                                                                        Name:Ray Vellinga rvell@san.rr.com, [Msgid=598753]
                                                                                                                                                                        Speed race in Douarnenez (France)

                                                                                                                                                                          ViewThread

                                                                                                                                                                              • Hello,
                                                                                                                                                                              • we’re organizing a speed race over in Douarnenez (France). Different categories are invited to run : windsurfers, kitesurfers, multiholls 60 feet and hydrofoils[/b. I’ll give you more information next time but for now, could you please give me some contacts of people eventually interested by that kind of races ?
                                                                                                                                                                              • Waiting for your answer,
                                                                                                                                                                              • Thank you,
                                                                                                                                                                              • Anne Raffray
                                                                                                                                                                              • Société des Régates de Douarnenez
                                                                                                                                                                              • 57 quai de l’yser
                                                                                                                                                                              • 29100 DOUARNENEZ
                                                                                                                                                                              • 33.2.98.74.36.84 (phone)
                                                                                                                                                                              • 33.2.98.74.38.90 (fax)

                                                                                                                                                                          [Date/Time=05-26-2004 – 11:32 AM]

                                                                                                                                                                            Name:Anne Raffray douarnenez.regates@wanadoo.fr, [Msgid=654338]
                                                                                                                                                                            Speed race in Douarnenez (France)

                                                                                                                                                                                • Anne, you have made a good start by posting your message on the IHS bulletin board. If you want to contact some people directly, I could suggest Dr. Sam Bradfield (

                                                                                                                                                                            hydrosail@aol.com

                                                                                                                                                                                • ) about his vessel SCAT and Rich Miller (

                                                                                                                                                                            rich@ski.org

                                                                                                                                                                                • ) about his hydrofoil sail board (see

                                                                                                                                                                            http://www.foils.org/miller.htm

                                                                                                                                                                                • ) and some of the people involved in designing or racing hydrofoil moths (see

                                                                                                                                                                            http://www.moth.asn.au/development.html

                                                                                                                                                                                • ). News of your event should be provided to the IHS Newsletter editor John Meyer (

                                                                                                                                                                            editor@foils.org

                                                                                                                                                                                • ). Hope this helps.

                                                                                                                                                                            [Date/Time=05-31-2004 – 8:01 AM]

                                                                                                                                                                              Name:Barney C Black bblack11@cox.net, [Msgid=656322]



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                                                                                                                                                                              Quadrofoil Q2S – (Zane)     07-07-17 – 11:26 PM

                                                                                                                                                                                • Howdy old friends –
                                                                                                                                                                              Life gets busy, but on one of my periodic check ups I couldn’t help smile about Quadrofoil’s newest release.
                                                                                                                                                                              I know, I know… surface piercing is dated, problematic etc. but I had to admire their simple and elegant design. The top V-section provides take off lift and accommodates extra passenger weight, plus stabilizes turns while the low foil section allows for higher speed/less drag.
                                                                                                                                                                              I don’t know about this one, but the original was 5kw. Maybe not the most efficient ever, but not bad for a 2 person craft.
                                                                                                                                                                              Anyway, hope everyone is well! My build is still planned, just delayed…

                                                                                                                                                                               

                                                                                                                                                                               

                                                                                                                                                                               

                                                                                                                                                                              The International Hydrofoil Society (IHS) Hydrofoil Correspondence Archives

                                                                                                                                                                               

                                                                                                                                                                              Updated last February 27, 2005

                                                                                                                                                                              Hydrofoils: Pleasure

                                                                                                                                                                              Hydrofoils: Pleasure      Top

                                                                                                                                                                              Archive; 1 or 2 Person Sports Hydrofoils
                                                                                                                                                                              Click on link below to open

                                                                                                                                                                              http://www.foils.org/oneperson.htm
                                                                                                                                                                              [Date/Time=03-24-2002 – 1:30 AM]

                                                                                                                                                                              Name:webmaster@foils.org [Msgid=237493]
                                                                                                                                                                              Archive; Buy, Sell, Restore Hydrofoils
                                                                                                                                                                              Click below to Open.

                                                                                                                                                                              http://www.foils.org/hysport.htm
                                                                                                                                                                              [Date/Time=03-24-2002 – 1:37 AM]

                                                                                                                                                                              Name:webmaster@foils.org [Msgid=237495]
                                                                                                                                                                              Archive; Adding Hydrofoils to Motorboats

                                                                                                                                                                                  • Click below to Open

                                                                                                                                                                              http://www.foils.org/motofoil.htm
                                                                                                                                                                              [Date/Time=03-24-2002 – 12:19 PM]

                                                                                                                                                                              Name:webmaster@foils.org [Msgid=237622]
                                                                                                                                                                              Archive; Human Powered Hydrofoils
                                                                                                                                                                              Click below to Open

                                                                                                                                                                              http://www.foils.org/human.htm
                                                                                                                                                                              [Date/Time=03-24-2002 – 3:05 PM]

                                                                                                                                                                              Name:webmaster@foils.org [Msgid=237681]
                                                                                                                                                                              Archive; Build Your Own Hydrofoil
                                                                                                                                                                              Click below to Open

                                                                                                                                                                              http://www.foils.org/yourown.htm
                                                                                                                                                                              [Date/Time=03-24-2002 – 3:53 PM]

                                                                                                                                                                              Name:webmaster@foils.org [Msgid=237697]
                                                                                                                                                                              Archive; Where To Buy Hydrofoil Yacht
                                                                                                                                                                              Click Below to Open this Archive.

                                                                                                                                                                              http://www.foils.org/hysport.htm

                                                                                                                                                                              [Date/Time=03-25-2002 – 3:41 PM]

                                                                                                                                                                              Name:Webmaster@foils.org [Msgid=238092]
                                                                                                                                                                              Archive; Hydrofoil Racers-Power
                                                                                                                                                                              Click Below to Open this Archive.

                                                                                                                                                                              http://www.foils.org/racers.htm

                                                                                                                                                                              [Date/Time=03-29-2002 – 7:07 PM]

                                                                                                                                                                              Name:Webmaster@foils.org whitewn@speakeasy.net, [Msgid=239981]
                                                                                                                                                                              Older Hydrofoil for Water Skiis

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • I recently purchased a very old, aluminum
                                                                                                                                                                                  • hydrofoil set-up that’s made to fasten
                                                                                                                                                                                  • to a pair of water skiis. It looks like
                                                                                                                                                                                  • an upside-down triangle with the hydrofoil
                                                                                                                                                                                  • (the part that “looks like an airplane”)
                                                                                                                                                                                  • fastened to the bottom (the point on the
                                                                                                                                                                                  • triangle). I don’t know how to fasten
                                                                                                                                                                                  • the set-up to the skiis. Has anyone ever
                                                                                                                                                                                  • run across a similar set-up? If so, can
                                                                                                                                                                                  • you help with ideas for assembling mine?
                                                                                                                                                                                  • Also, is there any literature (owners
                                                                                                                                                                                  • manuals, photos, etc.) that I might find
                                                                                                                                                                                  • on the net?
                                                                                                                                                                                  • Thanks for any help you can give me!!!

                                                                                                                                                                              [Date/Time=04-29-2002 – 12:55 PM]

                                                                                                                                                                              Name:Jeff B. justjeffb@yahoo.com, [Msgid=253211]
                                                                                                                                                                              Older Hydrofoil for Water Skiis

                                                                                                                                                                                  • Sounds like an early version of the Air Chair. In the unlikely event you are not familiar with this, you can find several websites on the Air Chair and competitors by typing “Air Chair” in the address area of Microsoft Explorer browser and hit return. Maybe some of the photos of Air Chair would give you some ideas. In any case, it sounds potentially dangerous. Due to the high speeds and significant forces involved, the selection of materials and attachment of foils to skis should be professionally designed to preclude a sudden failure while in flight.

                                                                                                                                                                              [Date/Time=05-03-2002 – 7:16 PM]

                                                                                                                                                                              Name:Barney C. Black webmaster@foils.org, [Msgid=255141]
                                                                                                                                                                              Water Spyder Model 2-B

                                                                                                                                                                                  • I have what is left of an old hydrofoil Model 2-B made by WaterSpyder, I think in the 1960s in Ontario, Canada. I could use some help in finding parts for it, or anyone interested in buying it. It is a small 2-seater billed as the first hydrofoil sport craft. Anyone out there ever heard of such a thing? Any info is welcome.

                                                                                                                                                                              [Date/Time=06-27-2002 – 7:29 PM]

                                                                                                                                                                              Name:Matthew Burns matthew_burns06035@yahoo.com, [Msgid=276277]
                                                                                                                                                                              Dublin Dynafoil Needs Parts

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • Two friends and I have just rescued a Dynafoil from a scrapdump in Dublin, Ireland. It is mostly intact, but needs an ignition box or c.d.i and coils, and also one of the cast aluminium foils on the front rudder is broken. Do you know anyone who has spares? We could probably repair the foil, but it’s the c.d.i and coils which are the biggest problem. We really want to get this wonderful machine running, so any help would be appreciated.

                                                                                                                                                                              [Date/Time=06-29-2002 – 7:39 AM]

                                                                                                                                                                              Name:Eddy dexterbug@mac.com, [Msgid=276806]
                                                                                                                                                                              Need Dynafoil in Evansville IN

                                                                                                                                                                                  • I worked in sales at one of the first Dynafoil Dealers in 1975 in Van Nuys , California. We were Recreational Vehicles and Supplies across the street from the Van Nuys airport. We sold max and attex all terrain vehicles Dunecycle three wheeled dirt carts ang guppy sailboats, an expensive toy store. The Dynafoil was so far ahead of its time that it never took off. The twist and foil start out of the Dynafoil had to be individually taught to all of my customers…. needless to say I loved my job teaching customers how to ride and pull skiers. I myself have been looking to buy a Dynafoil with trailer. No luck I’m living on the Ohio River in Evansville, Indiana now and could really kick some butts with the Dynafoil these jet kiers and Sea doos couldn’t begin to keep up with a Dynafoil. It is a shame the inventor Died and no one has continued the business…….

                                                                                                                                                                              [Date/Time=06-29-2002 – 10:24 AM]

                                                                                                                                                                              Name:Don Williams kgustov@sigecom.net, [Msgid=276831]
                                                                                                                                                                              Ideas on Where to Get Foils

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • This is a response to Barry Steele (

                                                                                                                                                                              barry_steele@yahoo.com

                                                                                                                                                                                  • ) who posted the following back in Nov 2001: “I am initially working on a towable hydrofoil with basically 3-axis aircraft-like control to allow the craft to jump without a wake to cross. (Jumping another boat’s wake can be dangerous and illegal.) Additionally, long rides in choppy water will really beat you up. Especially if you are 40+ like me. An adjustable foil would allow you to use your energy when you really want to perform vs travel. I am working on a recumbent seating system with dual front foils having individual spoileron controls and a separate rear skeg (rudder). The spoileron controls should allow bank control, counteract tow forces and control the height. The rudder should control yaw. If this works out well enough, the next version will be powered. I’d appreciate any suggestions. Such as: The front foils need control, should I rotate the entire horizontal surface of the foil? Can I instead have trailing control surfaces like an airplane’s flaps? I’m planning on building the foils in from flat aluminum.”
                                                                                                                                                                                  • I have been kicking around ideas similar to what you are trying to accomplish. Fluid dynamics is not my area, but there is something you might want to consider. Helicopter main rotor blades are available with widths from approximately 5″ to over 1′ (huey). You can’t buy them new ($$$$$$$$$$$$) but there is an interesting alternative. When a rotor blade is damaged or timed out, the manufacturer won’t sell you a new one unless you return the old one. I suppose they don’t want you to repaint it and sell it. However, it costs money to send a 10′-15′ blade to the manufacturer. So most manufacturers don’t require the whole blade, just the first 6″ where the rotor mounts are. I have had a little success in getting a helicopter repair shop to give me the remaining length, you might get more responses if you give them a little monetary incentive. The blades I have came off a Robinson 22, they are 7.2″ wide by 1.1″ thick, 9′ long, no discernable wash-out (twist), and STIFF. All aluminum and honeycomb (construction is fantastic, no wonder they cost a fortune new) and have a cross section almost identical to the foils used on the Windrider hydrofoil catamaran. If you like I can send you cross section.
                                                                                                                                                                                  • At one time last year I got an e-mail from a helicopter shop that is run by the son of one of the engineers on a Bell hydrofoil project. I was looking for partial or rejected sections, but he said if I gave him the NACA numbers or design criteria he could custom make the foils I needed in carbon fiber. I don’t know what he would charge, but if you are interested I will dig up his number.
                                                                                                                                                                                  • Lastly, I am a manufacturing engineer for a medical device company. A lot of what I do is building custom manufacuring machinery, much of which is computer controlled. Using a router motor, leadscrews, stepper motors and drivers, and an old pc it is possible to build a cnc machine that can not only cut your patterns from flat stock, but can change the profiles and contours to any shape you need. It isn’t as expensive as you might think. Without knowing all the details I believe we could put it together for under $2000. It could cut any shape within a pre-determined area in wood (I’ve seen oak foils on boats weighing over 1000 pounds), plastic, aluminum, or fiberglass. BTW, I’m looking into using G10 (FR4) fiberglass (used to make fins for supersonic rockets) with an overlayer of carbon fiber (for extra stiffness) as an alternative to metal for smaller foil boats. The material isn’t much cheaper, but it is easier to machine, lighter, and won’t corrode.
                                                                                                                                                                                  • Let me know if I can help,

                                                                                                                                                                              [Date/Time=06-29-2002 – 10:37 AM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=276833]
                                                                                                                                                                              Plans for small motor sport hydrofoil

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • First let me congratulate you on one of the best sites I’ve ever been to… Extensive to say the least. I’m interested in building a two place hydrofoil in the 10 to 25 hp range but would up the power if the right plans were available. I’m looking to have fun with my nephews building and flying a hydrofoil and want to be safe. Can you direct me to information that I am seeking?

                                                                                                                                                                              [Date/Time=07-03-2002 – 8:53 PM]

                                                                                                                                                                              Name:Gary A Sloat sloatg@mail.davenport.k12.ia.us, [Msgid=278582]
                                                                                                                                                                              Plans for small motor sport hydrofoil

                                                                                                                                                                                  • I wish I could say that the plans you want are available on the mass market and that all you have to do is order them, but that is not the case, unfortunately. The closest thing I can think of to what you are asking for is an experimental craft by the Back Yard Yacht Club. It was called the Interflight Hydroflier. Scroll down the page at

                                                                                                                                                                              http://www.stevproj.com/Carz/XBoats2.html

                                                                                                                                                                                  • to see photos and description. Unfortunately BYYC never got it fully developed to the point that they could offer plans for sale. BYYC did sell plans for the Sportfoil, which was a more conventional, motorboat style hydrofoil, but they sold out of the plans and did not reprint them. I have been thinking that most of the people who bought those plans probably never used them, so I have been keeping an eye out for them on the eBay auction site, but so far no trace of them.
                                                                                                                                                                                  • There were some plans in Popular Science and Science and Mechanics back in 1960. These were wooden foils added to about a 16 foot runabout, as I recall. These magazines do go up for auction occasionally on eBay. There is info on our site at

                                                                                                                                                                              http://www.foils.org/linksout.htm#plans

                                                                                                                                                                                  • and at

                                                                                                                                                                              http://www.foils.org/popmags.htm

                                                                                                                                                                                  • .
                                                                                                                                                                                  • Hydrofoils, Inc. built at least one 16-foot, two person hydrofoil back in the 70s but never developed it into a generally available product. There used to be a photo of it up on the company site at

                                                                                                                                                                              www.hydrofoil.com

                                                                                                                                                                                  • , but it has been taken down as the company’s focus shifted to larger craft. The company owner Ken Cook is an IHS member… I don’t know whether the plans could be made available, but it could be worth contacting him.
                                                                                                                                                                                  • Other pages on the IHS site of possible interest include:

                                                                                                                                                                              http://www.foils.org/upright.htm
                                                                                                                                                                              http://www.foils.org/oneperson.htm
                                                                                                                                                                              http://www.foils.org/motofoil.htm
                                                                                                                                                                              http://www.foils.org/students.htm

                                                                                                                                                                                  • Finally, I occasionally see Volga hydrofoils go up for sale or auction, such at the one currently listed at:

                                                                                                                                                                              http://www.frenchcreekboatsales.com/pleasure/volga.htm

                                                                                                                                                                              [Date/Time=07-03-2002 – 9:03 PM]

                                                                                                                                                                              Name:Barney C. Black webmaster@foils.org, [Msgid=278588]
                                                                                                                                                                              Plans for small motor sport hydrofoil

                                                                                                                                                                                  • Barney gave you some good advice and direction to sources.
                                                                                                                                                                                  • You might want to specifically check out our Archve on small Jet-ski type Hydrofoils.

                                                                                                                                                                              http://www.foils.org/oneperson.htm

                                                                                                                                                                                  • A number of these craft are built small companies or individuals who might be willing to share plans or sell partially assembed boats to you.
                                                                                                                                                                                  • In addition there is a thriving new market for small Sailing Hydrofoils. Try out our Links page or the Hydrofoil Sailboat Section of this bulletin board and Sellect the See “all messages” option to see our archives of lots of small sailing hydrofoils.
                                                                                                                                                                                  • Best of luck
                                                                                                                                                                                  • Bill White

                                                                                                                                                                              [Date/Time=07-04-2002 – 3:08 PM]

                                                                                                                                                                              Name:Bill White whitewn@speakeasy.net, [Msgid=278808]
                                                                                                                                                                              Plans for small motor sport hydrofoil

                                                                                                                                                                                  • Popular Science did do an article on making your own wooden foil boat. They used both a homemade boat (a real kluge) and a 14′ plywood runabout. This would be a excellent project for you, inexpensive, effective, and not too difficult. The foils were oak and made on a table saw. I have the original article as well as the plans that were offered for sale. If you drop me a line I’ll e-mail you a copy. The design they used could be easily attached to a small fiberglass or aluminum runabout.

                                                                                                                                                                              [Date/Time=07-09-2002 – 7:21 AM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=280245]
                                                                                                                                                                              Plans for small motor sport hydrofoil

                                                                                                                                                                                  • I have a Dynafoil, and I am in the process of scanning the owners manual, parts manual, and service manual. It’s a lot of documentation, but I’m hoping that I can reduce the size by converting it to a Word document. I can also take measurements and generate blueprints for parts as needed. I might be able to manufacture some parts if necessary, but time is an issue. My copy of the service manual is just that, a copy. Many of the photos are difficult or impossible to see clearly. If anyone has an original service manual, I would love to make arrangements to scan it. Like everything else I would provide the scans for free to anyone in need.

                                                                                                                                                                              [Date/Time=07-09-2002 – 7:33 AM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=280246]
                                                                                                                                                                              Have Dynafoil; Need Orig Service Manual

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • I have a Dynafoil, and I am in the process of scanning the owners manual, parts manual, and service manual. It’s a lot of documentation, but I’m hoping that I can reduce the size by converting it to a Word document. I can also take measurements and generate blueprints for parts as needed. I might be able to manufacture some parts if necessary, but time is an issue. My copy of the service manual is just that, a copy. Many of the photos are difficult or impossible to see clearly.
                                                                                                                                                                                  • If anyone has an original service manual, I would love to make arrangements to scan it. Like everything else I would provide the scans for free to anyone in need.

                                                                                                                                                                              [Date/Time=07-09-2002 – 12:09 PM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=280368]
                                                                                                                                                                              Where to get Dynafoil Info

                                                                                                                                                                                  • There are several people who have corresponded with IHS concerning Dynafoils, including notices of Dynafoils for sale. I suggest you go to the IHS main page at

                                                                                                                                                                              http://www.foils.org

                                                                                                                                                                                  • and use the search engine at the bottom of the page to look in the archives for “dynafoil”. Then contact any likely looking correspondents by email to ask if they can help.

                                                                                                                                                                              [Date/Time=07-12-2002 – 7:15 PM]

                                                                                                                                                                              Name:Barney C. Black webmaster@foils.org, [Msgid=281879]
                                                                                                                                                                              Yacht Design Source

                                                                                                                                                                                  • In response to John Turnbull’s inquiry in the correspondence archives page

                                                                                                                                                                              http://www.foils.org/buyferry.htm

                                                                                                                                                                                  • .
                                                                                                                                                                                  • I am a member of the International Hydrofoil Society, and my company specializes in custom built yachts and our team has some of the most talented hydrofoil designers (engineers) in the world, all of them with military hydrofoil background.
                                                                                                                                                                                  • We currently offer three BUGATTI YACHTS hydrofoil designs, ranging from 32ft all the way to 146ft, which are custom built to our customer’s specific requirements. It happens that I have recently designed a 32ft, called the TT- Titanium Tender Hydrofoil, which may well suit your needs. If the price is of the TT is not on your budget, we can build you a cheaper version as per your requirements.
                                                                                                                                                                                  • John F. Rodrigues
                                                                                                                                                                                  • President & CEO
                                                                                                                                                                                  • Bugatti Yachts
                                                                                                                                                                                  • 1515 N. Federal Hwy. Suite 300
                                                                                                                                                                                  • Boca Raton, FL 33432
                                                                                                                                                                                  • Ph.: (561) 330-0490
                                                                                                                                                                                  • Fax: (561) 498-7229
                                                                                                                                                                                  • Web site is

                                                                                                                                                                              http://www.BugattiYachts.com
                                                                                                                                                                              [Date/Time=07-14-2002 – 5:33 AM]

                                                                                                                                                                              Name:John F. Rodrigues JFR@YachtBoutique.com, [Msgid=282206]
                                                                                                                                                                              Yamaha OU-32 1-man hydrofoil

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • I was asking that old question “whatever happened to the Yamaha personal hyrdrofoil I saw on Beyond 2000 many years back?” With a little more searching, and some help from Google, I found the following Japanese page hosted by Yamaha. Besides having some good photos of the OU32, it also has a RealMedia OU-32 movie! Hope you find this as much fun to view as I did.

                                                                                                                                                                              http://www.yamaha-motor.co.jp/cp/challenge/expansion/ou32/ou32.html

                                                                                                                                                                                  • It’s a shame they never mass produced it. Even 14 years later, it still looks pretty darned sexy and fun!
                                                                                                                                                                                  • — Aaron Sakovich

                                                                                                                                                                              http://www.alphant.com/alphaman.html
                                                                                                                                                                              [Date/Time=07-21-2002 – 5:02 PM]

                                                                                                                                                                              Name:Aaron Sakovich aaron@alphant.com, [Msgid=284927]
                                                                                                                                                                              IHS membership

                                                                                                                                                                                  • Dear Aaron,
                                                                                                                                                                                  • I have sent you a e-mail to the address listed here and to the one on your web site to invite you to join IHS. In both cases, the e-mail was returned undeliverable. See our web page

                                                                                                                                                                              www.foils.org

                                                                                                                                                                                  • for information.
                                                                                                                                                                                  • Sumi Arima
                                                                                                                                                                                  • Membership Chairman
                                                                                                                                                                                  • IHS

                                                                                                                                                                              [Date/Time=07-26-2002 – 1:37 PM]

                                                                                                                                                                              Name:S. Arima arimas1@juno.com, [Msgid=286886]
                                                                                                                                                                              IHS membership

                                                                                                                                                                                  • His website gives his email address as

                                                                                                                                                                              alphaman64@home.com

                                                                                                                                                                                  • , however I don’t think that can be right either because the @home network went bankrupt!

                                                                                                                                                                              [Date/Time=07-27-2002 – 8:00 AM]

                                                                                                                                                                              Name:Barney C. Black webmaster@foils.org, [Msgid=287107]
                                                                                                                                                                              Restoring a Wetbike

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • One of my friends and Irecently found an old wetbike on my uncle’s farm. It has been sitting under sheets for eleven years(round about!!). Since he said he had no use for it anymore, we decided to restore it. We looked inside, and everything looks pretty new. There is no rust and no signs of animal damage inside. My uncle could not find any owners manual and now we would like to know if you can help to find out more about the engine and spare parts (if we need any…). We have not tried to start it yet but we will tomorrow.
                                                                                                                                                                                  • We would be very happy to hear from anyone who can help, just to define clear questions.

                                                                                                                                                                              [Date/Time=08-03-2002 – 2:32 PM]

                                                                                                                                                                              Name:Jorma Lux luxusa@hotmail.com, [Msgid=290021]
                                                                                                                                                                              Restoring a Wetbike

                                                                                                                                                                                  • A Wetbike is not a hydrofoil, per se. It rides on the surface, more like a waterski. I have a Wetbike (in my collection of boats & projects). The engine is a product of Suzuki of Japan, but not distributed by American Suzuki Motor Corp. Suzuki suggests contacting Certified Parts (Ultranautics) at 1 800 356-0777. If I can help, email me.

                                                                                                                                                                              [Date/Time=08-04-2002 – 7:16 PM]

                                                                                                                                                                              Name:Barry Steele barry_steele@yahoo.com, [Msgid=290530]
                                                                                                                                                                              1958 Grumman 14`8` Hydrofoil

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • For Sale: Museum Piece – Hydrofoil-Grumman 1958 14’8″.
                                                                                                                                                                                  • New Mercury 40 HP, Trailer, Original 35 HP Evenrude Lark (stuck), Morse Controls. Runs great. Can deliver in Southeast US. $27,350.00
                                                                                                                                                                                  • 160 Harner Road, Kathleen, GA 31047 (478)987-0356


                                                                                                                                                                              [Date/Time=08-19-2002 – 5:56 PM]

                                                                                                                                                                              Name:Myrel Harner ireneharner@juno.com, [Msgid=298164]
                                                                                                                                                                              1958 Grumman 14`8` Hydrofoil

                                                                                                                                                                                  • I’ve always loved the Grumman foil and hoped to find one, yours looks truly museum quality. Unfortunately, it’s about twice what I could afford. I am trying to build a boat that is similar, could I possibly convince you to send a few more pictures? It is difficult to find any pictures of that model, much less high quality modern pictures. I hope you get what you are asking for it, it is a truly beautiful model.
                                                                                                                                                                                  • Thanks,
                                                                                                                                                                                  • Scott

                                                                                                                                                                              [Date/Time=08-23-2002 – 12:58 PM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=300159]
                                                                                                                                                                              Older Hydrofoil for Water Skiis

                                                                                                                                                                                  • I think I saw the hydrofoil ski’s you are talking about. It is a pair of ski’s(not a single slalom ski) rigidly mounted a foot or two apart, with a set of surface peircing foils. The picture I saw was in an old (mid 60’s to mid 70’s) Playboy from my fathers collection

                                                                                                                                                                                  • . The design seemed straight forward enough, and shouldn’t be too difficult to figure out. If you can send me carefully laid out pictures I may be of help. A word of warning, from what I remember an average adult could get foilborne at less than 20 mph. If you do get them assembled and try to use them, don’t exceed that speed until you are foilborne and confident. If you get to 20 mph and aren’t foilborne then you probably have a ventilation problem and going faster will not fix it, it will only get you hurt worse. The pictures I remember showed a man skiing side-by-side with a woman, about 1.5 feet above the water, with the skis almost parallel to the surface (not much upward trim). Let me know if you need help, and especially if you get them working.
                                                                                                                                                                                  • Scott

                                                                                                                                                                              [Date/Time=08-23-2002 – 1:36 PM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=300178]
                                                                                                                                                                              Russian Hydrofoil Repairs

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • I am an engineer in Miami, Florida. I have much interest in small hydrofoil boats (I bought the two Dynafoils you may have seen listed), and I am planning to make a couple of designs of my own. I have access to computerized machine shop tools (CNC lathes, mills, etc.). I’m not trying to turn this into a business opportunity. I was able to repair some parts on a Russian hydrofoil that belongs to the neighbor of a friend. I attached a couple of pictures of the Russian foil.


                                                                                                                                                                              [Date/Time=08-24-2002 – 4:11 PM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=300630]
                                                                                                                                                                              Dynafoil Enthusiast

                                                                                                                                                                                  • I just recently purchased the Dynafoils that were listed on the IHS website. I am trying to find other dynafoil enthusiasts and owners.

                                                                                                                                                                              [Date/Time=08-24-2002 – 4:15 PM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=300631]
                                                                                                                                                                              Older Hydrofoil for Water Skiis

                                                                                                                                                                                  • I did not see the original post for information on hydrofoils for water skis but am responding to Scott Smith’s post of 8/23. I have such a set, dating back to about the ’60s. It is, indeed, for a pair of skiis, not a single slalom ski. The set is about 300 miles from here so I can only give you my best recollection of dimensions. The skiis are positioned so that the skier’s feet are about one foot apart and the arch of the feet is directly over the strut. At the bottom of the strut is a longitudinal bar to which two foils are attached; one forward of the strut and the other behind it. As I recall, the forward foil is positioned to provide lift and the aft foil provides downward force, counteracting the moment caused by the pull of the rope. I believe that the aft foil is the larger of the two but could be mistaken about that. There was a third foil used for “training” but that was taken off and lost many years ago.
                                                                                                                                                                                  • This is a *very* slow speed device–even 20 mph is too fast. Speed is critical. I ask the boat driver to accelerate very slowly (a typical waterski start is neither necessary nor desired) and to stop accelerating when the skiis are on the surface. Then a little more speed will fly it. Too much speed and it will fly out of the water. The skier can control the height somewhat by raising and lowering his arms (arms must be straight at all times). Raise the arms to fly lower in the water and lower the arms to fly a little higher. The unit is very difficult to control. It wants to porpoise. Many people have tried to ride this contraption but I am the only one that has been successful (to a point). In 50 years of waterskiing I have had only one accident–I dislocated my shoulder taking a fall while flying it.
                                                                                                                                                                                  • I hope that this is helpful and relevant to the discussion. If you need more information, let me know. –Mike

                                                                                                                                                                              [Date/Time=08-25-2002 – 7:41 PM]

                                                                                                                                                                              Name:Michael W. Preis mpreis@liu.edu, [Msgid=300993]
                                                                                                                                                                              Older Hydrofoil for Water Skiis

                                                                                                                                                                                  • I was recently sent this reply about the skis. From the reply it seems like controlling them is very similar to controlling an ‘Air Chair’, so you might want to do some reading at their website. Please let me know if I can help, or if you decide to sell them.
                                                                                                                                                                                  • Scott
                                                                                                                                                                                  • Reply Posted:I did not see the original post for information on hydrofoils for water skis but am responding to Scott Smith’s post of 8/23. I have such a set, dating back to about the ’60s. It is, indeed, for a pair of skiis, not a single slalom ski. The set is about 300 miles from here so I can only give you my best recollection of dimensions. The skiis are positioned so that the skier’s feet are about one foot apart and the arch of the feet is directly over the strut. At the bottom of the strut is a longitudinal bar to which two foils are attached; one forward of the strut and the other behind it. As I recall, the forward foil is positioned to provide lift and the aft foil provides downward force, counteracting the moment caused by the pull of the rope. I believe that the aft foil is the larger of the two but could be mistaken about that. There was a third foil used for “training” but that was taken off and lost many years ago.
                                                                                                                                                                                  • This is a *very* slow speed device–!
                                                                                                                                                                                  • even 20 mph is too fast. Speed is critical. I ask the boat driver to accelerate very slowly (a typical waterski start is neither necessary nor desired) and to stop accelerating when the skiis are on the surface. Then a little more speed will fly it. Too much speed and it will fly out of the water. The skier can control the height somewhat by raising and lowering his arms (arms must be straight at all times). Raise the arms to fly lower in the water and lower the arms to fly a little higher. The unit is very difficult to control. It wants to porpoise. Many people have tried to ride this contraption but I am the only one that has been successful (to a point). In 50 years of waterskiing I have had only one accident–I dislocated my shoulder taking a fall while flying it.
                                                                                                                                                                                  • I hope that this is helpful and relevant to the discussion. If you need more information, let me know. –Mike
                                                                                                                                                                                  • Posted by – Username: Michael W. Preis.
                                                                                                                                                                                  • Poster’s email address is:

                                                                                                                                                                              mpreis@liu.edu

                                                                                                                                                                                  • .
                                                                                                                                                                                  • Message Id 300993
                                                                                                                                                                                  • Message Category: Hydrofoils: Pleasure

                                                                                                                                                                              [Date/Time=08-26-2002 – 7:56 AM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=301156]
                                                                                                                                                                              Russian Hydrofoil Repairs

                                                                                                                                                                                  • Is it possible that you can give me more information on the lifting system that I saw on the photo’s?
                                                                                                                                                                                  • Is it made of steel our wooden beams?

                                                                                                                                                                              [Date/Time=09-05-2002 – 4:53 AM]

                                                                                                                                                                              Name:Mark van Rijzen dutchhydrofoils@wanadoo.nl, [Msgid=305679]
                                                                                                                                                                              Russian Hydrofoil Repairs

                                                                                                                                                                                  • The front view gives you the best idea of the arrangement. This is a Volga 70, a quick web search might get you better pictures of the foils themselves. Okay, the rear foils are very similar to the front, if not the same. The foils are polished stainless steel, bolted to the aluminum hull. The foils are not bolted to the struts, they are welded, so to dissassemble them they would come off the hull as one big unit. As I recall the chord of the foil was about 6″. They are flat on the bottom, and the top is a portion of a circle. They are not airfoil shaped. I believe they were about 3/8″ thick in the center of the chord with sharp leading and trailing edges (not as sharp as a knife, but maybe as sharp as a dull lawnmower blade). The owner told me that the lower foil had a 1 degree downward angle, and the upper foil had a 4 degree up angle. Those angles would be in relation to the hull, as I believe the hull has a slightly up trim while foilborne. When cruising, the water level reaches an equilibrium somewhere between the foil surfaces. The rear foils are close together and in line with each other vertically, with the same dihedral (as I recall). But the front foils are staggered with the top foil behind the bottom foil. This HAS to be a design feature as the struts are swept back from top to bottom. If the foils followed the struts then the upper foil would be in front of the lower foil. Also the upper foil has less dihedral than the lower foil. The boat was powered by a 4-cylinder volvo I/O. The owner likes to show off his boat (and it is a beauty) so if you want to see it (in Florida) I’ll try to contact him for you. BTW, I did discover an interesting trait about this boat that I hadn’t expected. The foils only lift the hull a few inches above the water (it was designed as a river boat). I expected the ride to get rough in seas greater than 1 foot. But when we took it out in 3 foot seas it handled very well. Normal boats in a heavy chop slam into the waves forcing the bow up. So the roughness isn’t just the boat slowing down at each wave, there is also a lot of bouncing up and down. This forces most boats to slow down a lot. With this boat the foils force the boat to stay level as it hits each wave, forcing the bow of the boat through the wave without bouncing. It still slows slightly, and you want to run a little slower to save the hull from excess fatigue, but it is a suprisingly smooth ride. I have a few more pictures which I will send you, and hope to get some better ones by the end of the year.
                                                                                                                                                                                  • Scott Smith

                                                                                                                                                                              [Date/Time=09-05-2002 – 8:11 AM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=305714]
                                                                                                                                                                              Older Hydrofoil for Water Skiis

                                                                                                                                                                                  • Okay, I found the ad for the skis on e-bay. It was a 1974 ad from Playboy. I scanned it in at 600dpi and I am attaching it here. It’s a big picture so I thought the Webmaster at IHS might want to post it to the gallery. Be sure and read the other replies, there is so good info on controlling these. BTW, I would be more than happy to help you get them working, or if you should give up I would also like to buy them from you.
                                                                                                                                                                                  • Scott Smith

                                                                                                                                                                              [Date/Time=09-06-2002 – 3:48 PM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=306315]
                                                                                                                                                                              Strap on foil assm 4 a 125cc scooter

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • Hi,
                                                                                                                                                                                  • Have scooter and just moved to coastal town. Thought crossed my mind maybe there is some sort of hydrofoil assembly to mount a scooter on. Taking drive from the back wheel via rollers to a propeller. Prefer hydrofoil to lessen drag etc etc. Hopefully can be transported by scooter to launch site then quick assembly.

                                                                                                                                                                              [Date/Time=09-19-2002 – 5:03 PM]

                                                                                                                                                                              Name:Vivian Dewey vvdewey@yahoo.co.uk, [Msgid=312044]
                                                                                                                                                                              Strap on foil assm 4 a 125cc scooter

                                                                                                                                                                                  • A fascinating concept, and it could probably be done as a design and build from scratch project. I don’t immediately see how it could be done as a strap on, especially if the boat part has to be carried on the scooter itself as opposed to towed on a trailer. But we have a lot of hobbyists as members and visitors to the website, so maybe someone will come up with something. Note that your idea implies detail design requirements beyond the basic problem… for example, dealing with effects of salt water corrosion, protecting the engine from accidental water ingestion, an automatic stop feature in case you fall off into the water, etc., etc. Probably more trouble than it is worth!

                                                                                                                                                                              [Date/Time=09-20-2002 – 2:55 PM]

                                                                                                                                                                              Name:Barney C. Black webmaster@foils.org, [Msgid=312421]
                                                                                                                                                                              Strap on foil assm 4 a 125cc scooter

                                                                                                                                                                                  • It would be interesting to see if you could come up with a working solution. A 125cc engine would certainly be able to power a small, purpose-built foil-boat, but I wonder if you could get enough power out of it to get a foilboat carrying all that weight out of the water (deep water start). Maybe if the engine was modular? You could trailer a hull there, then pull the engine out of the scooter and plug it into the foilboat. More efficient engine coupling, and leave the additional weight and space of the scooter behind. Keep thinking and let us know if you have a brainstorm, it’s a cool idea.
                                                                                                                                                                                  • Scott Smith

                                                                                                                                                                              [Date/Time=09-24-2002 – 10:25 AM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=313894]
                                                                                                                                                                              at least partial planing beach cat ?

                                                                                                                                                                                  • It seems like an otherwise conventional beach cat hulls (think Prindle 19 or Nacra) could benefit from flat planar surfaces along bottoms of hulls? The idea would be to reduce wetted surface (at speed) without adding complexity. I imagine the flat surfaces not being very different than water skis in planform.

                                                                                                                                                                              [Date/Time=09-24-2002 – 3:39 PM]

                                                                                                                                                                              Name:gary estremsky sestremsky@aol.com, [Msgid=314088]
                                                                                                                                                                              Update on Trixie de Luxe

                                                                                                                                                                                  • Here is an update on the hydrofoil project

                                                                                                                                                                              TRIXIE DE LUXE

                                                                                                                                                                                  • started in 1947. My original posting is archived on the IHS page

                                                                                                                                                                              http://www.foils.org/hysport.htm

                                                                                                                                                                                  • :
                                                                                                                                                                                  • Trixi is doing just fine; however, she has not been flying. We think the problem is that the boat is too heavy in the front. The engine has been moved quite a bit forward from the original location. It was supposed to be in the aft, with the propeller up front. But, the designer changed his mind and changed it around to more traditional layout. We had some test runs this summer, without being able to get the boat up in speed, since it tends to drop down in the front before the wings start to produce lift. On some of the pictures you will see two “bows” that we fitted in front of the tunnels. We did this to get more of the hull above the waterline, and to increase the buoyancy. We have now built larger wings and bows in styrofoam (?), which is very light, to get even more buoyancy. This latest modification will be tried out in a couple of days. We have also had problems in getting the right propeller. I have moved the website, and will
                                                                                                                                                                                  • shortly include some more pictures. Please see

                                                                                                                                                                              www.inocean.no/trixi


                                                                                                                                                                              [Date/Time=09-25-2002 – 7:36 PM]

                                                                                                                                                                              Name:Thomas Eckey te@inocean.no, [Msgid=314827]
                                                                                                                                                                              Hydrofoil Equipped Surfboards

                                                                                                                                                                                  • There is a revolution in extreme big-wave surfing using foil-equipped surfboards and the design experimentation is in its early, early stages and all possible design theory is being analyzed for this application.
                                                                                                                                                                                  • Billabong Odyssey:

                                                                                                                                                                              http://www.BillabongOdyssey.com

                                                                                                                                                                                  • . The search for the 100 ft wave begins here. Get up-to-date information about this incredible quest for the 100 ft wave.

                                                                                                                                                                              [Date/Time=10-26-2002 – 9:26 PM]

                                                                                                                                                                              Name:Bill Sharp SurfNewsEd@aol.com, [Msgid=329325]
                                                                                                                                                                              1958 Grumman 14`8` Hydrofoil

                                                                                                                                                                                  • On the advice of a trusted friend, I have changed the price on my
                                                                                                                                                                                  • 1958 Grumman Hydrofoil ad to $17,500. Myrel E. Harner

                                                                                                                                                                              [Date/Time=11-24-2002 – 8:31 PM]

                                                                                                                                                                              Name:Myrel E. Harner ireneharner@juno.com, [Msgid=342947]
                                                                                                                                                                              Volga 70 Restoration

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • I’m the lucky owner of Volga 70 Hydrofoil (8.5m long, with GAZ-53 V8
                                                                                                                                                                                  • engine). As I noticed on your page, many people have shown interest in this kind of boat, and are hungry for any bit of information available on it. I would be pleased to share any photos of the boat. As the restoration process hasn’t even really started, I can provide you with pics of boat’s current state 🙂

                                                                                                                                                                              [Date/Time=11-25-2002 – 7:24 PM]

                                                                                                                                                                              Name:Kaspars V. sh60030@lanet.lv, [Msgid=343359]
                                                                                                                                                                              Ideas on Where to Get Foils
                                                                                                                                                                              Text

                                                                                                                                                                                  • Scott, I was just looking over the IHS site and was intrigued by your ideas. I would like to develop a kit that can be bolted onto an averaged size boat for the recreational hydrofoilist. After reading the information that Tom Lang had posted a couple years ago, I’ve been thinking about different ways to accomplish this. I see a lot of inquiries from people that want plans or a kit of some kind. One option would be to make a surface piercing hydrofoil. A person could pay to get an extrusion die made, then have a number of 20′ lengths extruded as bar stock. This stock could then be cut to length, and bent to whatever configuration desired. There’s an initial outlay, but the sales could offset this. A submerged hydrofoil would take a rather sophisticated control package, but the foils themselves would be much easier to make. Ultimately, this is the direction I’d rather take. I am a mechanical engineer working in manufacturing. I have a background in controls and a lot of desire, but don’t feel confident enough to tackle this. The submerged version would require a gyroscope for attitude reference. It may be possible to use a gyroscope that is now available in the R/C helicopters. I have a 16′ trihull 120hp I/O that I plan on using for this experiment, but as of yet do not have the necessary parts or intellectual fortitude.

                                                                                                                                                                              [Date/Time=11-27-2002 – 3:14 AM]

                                                                                                                                                                              Name:Jeff Mikkelsen mikki@softcom.net, [Msgid=344071]
                                                                                                                                                                              Designing a foil kit

                                                                                                                                                                                  • Jeff, I think it is terrific you want to get involved with this type of foil boat. There is not much real work being done in this area. And don’t underestimate your ‘intellectual fortitude’, a willingness to work at the problems will surely yeild positive results. Reading all the posts will lead you to believe that building a small foil boat is a really tricky thing to do. I can send you a set of plans from Popular Science that proves otherwise. The ‘problem’ that I see with these small boats (10′-30′) isn’t that they are too complicated. It is that most of the engineers spend all their time discussing the finer points of control, foil cross section, lift to drag ratios, etc., and seldom actually build anything. Having the perfect foil cross section/control system/weight distribution/propulsion system might make a well performing boat, but drop your performance requirements by 10% and the amount of knowledge and work required to accomplish it is cut by 80%. I’m sure that wind-tunnel testing that hand-launched glider design will allow you to refine the design, but I have hand-carved gliders out of blocks of balsa using no plans and no sandpaper and gotten very good results. Would it win any competitions? No. Did it fly and make me happy? Sure. The real problem is to carefully, and realistically, determine what you want to accomplish, and what resources you are willing to throw at it. I often hear people talking about how much simpler a surface peircing foil is compared to a submerged foil. This just isn’t true unless you build the boat hull from scratch. If you mount surface peircing foils on your tri-hull, the nature of the design will cause serious flexing on the sides of your hull unless you spend a lot of time reinforcing it. That is because the lift from the foils won’t push straight up on the boat, rather it will push up and in at an angle, causing your hull to flex and maybe fail under load. Submerged foils on the other hand, will push straight up with little side loading, meaning you won’t have to make changes to your boats structure. The operational loads and loads from debris impacting on surface piercing foils are more complicated than for submerged, since submerged are a simpler planform and are attached inline from where those forces are applied. It would seem that running off an extrusion, then bending it and welding it into shape is easier than building a submerged system, but it isn’t. Take a look at the Hobie Tri-foiler, or the Wind Rider, or any of the solar or human powered craft and then decide how complicated the controls are. There needs to be a little more planning up front for submerged foils, but the actual construction and use is easier. And forget about gyros, hydraulic dampers, etc. V-hull boats beat you to death in rough water. Surface peircing foils ride much better, even though they aren’t glass smooth. Submerged foils with surface followers (and no other mechanisms) work as well as surface piercing, and in some cases even better. Military foils have different stability needs because (among other things) they are gun platforms. Large commercial vessels are computer stabilized because they are more expensive to begin with, larger vessels are easier to stabilize than smaller vessels, and they have to compete with other types of transportation to keep their clients. A surface piercing foil system with mechanical surface following and no electronics or hydraulics on a 25′ open fisherman is still a far more forgiving ride than the only current competitor, a non-hydrofoil boat. Custom extrusions for foils is a great idea if you are able to sell lots of them, but as other companies have discovered, that is harder than it appears. There are other alternatives such as swaging or machining of bar stock. Not as hard or expensive as you might think, especially for short runs. And there are other materials. Aluminum is nice because it can be bent and welded. But we use G10/FR-4 fiberglass for making supersonic rocket fins. It would be an ideal material for a submerged design. Careful attention to the boat type and personality of the people using it is necessary also. Your tri- hull would be a good project for something that compares to a Volga 70. That is a fixed, surface piercing foil for use in smooth water. To really get into a heavy chop you need the hull higher out of the water. The only way to do that with your boat is to extend the outdrive. That is complicated, expensive, adds stresses to your outdrive, and makes it difficult to use in very shallow water. Adding foils to it would be an interesting exercise, but somebody who already owns a boat like yours would not want to modify it. The modification would be expensive, limited to 50 mph, and mostly usefull in smooth water where a tri-hull already performs well. As I see it there are really only two places a bolt on kit would really sell. One is for 16-30′ open water boats with outboards. These boats can be purchased with long shaft outboards on a low bracket, or can have a motorized jack-plate installed for a reasonable amount of money. Few of these boats can exceed 50 mph in a chop, so foil speed limitations don’t matter. Many are used for cruising at least as much as they are used for fishing, so a smooth ride is desireable. And if a foil is knocked off in deep waves the boats are still seaworthy enough to motor in for repair. If you manage to get you boat to run well in 4′ seas, you would be in trouble if you lost a foil in that sea state. The other usefull application is on small aluminum boats. We have all seen the 18′ aluminum bass boat with the Merc Black Max heading out to fish. He is already doing more than 50mph with a stock boat in smooth water, he doesn’t need foils. But how about the guys that can’t afford that? It would be simple and cheap to produce a kit for a 14′ aluminum utility boat, that is surface piercing and only lifts the boat 6″ out of the water. Now a guy and his son can jump in a 14′ boat with a 20HP long shaft and head out at 30-35 mph, and run all day on 6 gallons of gas. And get this, the kit is wood. And if they want, they can buy it unassembled and put it together and paint it themselves.
                                                                                                                                                                                  • I hope I didn’t go on too much, I guess I should knock off the coffee. Anyway, I am interested in talking to you about you plans. As for me, I bought a 14′ aluminum utility boat, added a 4-stroke, electric start, extra long shaft (not 15″, not 20″, but 26″ shaft), Honda outboard. Next comes the remote steering console, and then the foils (submerged). I hope to be able to run a 2′ chop. I also have a 12′ aluminum boat with a 10hp longshaft Honda (tiller) that I plan to put wooden surface piercing foils on, just for fun and comparison. My biggest problem right now is time, but I’m working on it.

                                                                                                                                                                              [Date/Time=11-27-2002 – 9:22 AM]

                                                                                                                                                                              Name:Scott Smith ssmith@syntheon.com, [Msgid=344132]
                                                                                                                                                                              Volga 70 Restoration

                                                                                                                                                                                  • Re;Volga 70 very like to see on going pictures of restoration

                                                                                                                                                                              [Date/Time=11-27-2002 – 9:27 PM]

                                                                                                                                                                              Name:Matt Kirk matric39@gte.net, [Msgid=344357]
                                                                                                                                                                              Want to Design an Add-On Foil Kit?!

                                                                                                                                                                                  • As to creating a hydrofoil kit, in the process of design, marketing, manufacture, and customer support, probably the design is the easy part. Tom Lang?s Upright Hydrofoil Kit, described at

                                                                                                                                                                              http://www.foils.org/upright.htm

                                                                                                                                                                                  • was manufactured but was not a commercial success. You may want to contact him for lessons learned on the marketing side. No doubt he still has the design and a couple of the original kits, so if you thought the marketing problems could be overcome in the current environment, then maybe you could do something together with him.

                                                                                                                                                                                  • The Grumann Sea Wing hydrofoil kit and runabout is another design that was marketed and could possibly be revived. Myrel Harner has one of these for sale right now, see

                                                                                                                                                                              http://www.foils.org/announce#buyfoil

                                                                                                                                                                                  • . If you use the Search Engine on the IHS Main Page at

                                                                                                                                                                              http://www.foils.org

                                                                                                                                                                                  • to search for the exact phrase ?sea wing? you will find many more references on the IHS site to this design.

                                                                                                                                                                                  • Both Tom Lang?s design and the Grumann design are surface piercing hydrofoils designed for small runabouts. Moving a step up in size and going to a fully submerged design with automatic control system, see Harry Larsen?s modified Bayliner at

                                                                                                                                                                              http://home1.gte.net/hlarsen0/

                                                                                                                                                                                  • . Harry has offered his design to others as well as has offered his boat

                                                                                                                                                                              TALARIA III

                                                                                                                                                                                  • with no takers so far. He may be able to offer some insight from his experience as to why the lack of wider interest.

                                                                                                                                                                                  • As to the subject of an Automatic Control System, Harry Larsen gives info on his ACS on his site. Since the days of the military hydrofoils, commercially designed and manufactured sensors and other components have become available that improve the ability to create a reliable and affordable ACS. For example, Malin Dixon has done work on this. See his site at:

                                                                                                                                                                              http://www.onspec.co.uk/ihs/model.htm

                                                                                                                                                                                  • On the sailing side, Dave Keiper had started marketing his hydrofoil kit for Hobie and other small catamarans when he died unexpectedly. He had a foundry run foil extrusions for him, and was selling foil kits made from them, along with instructions on how to mount the foils. Detailed information on the design, extrusion source, etc. are available (though a bit chaotic) in the set of Dave?s files available from IHS, see:

                                                                                                                                                                              http://www.foils.org/ihspubs.htm#dakfiles

                                                                                                                                                                                  • . Dave Keiper’s brother Frank still maintains part of the website at

                                                                                                                                                                              http://www.wingo.com/dakh/

                                                                                                                                                                                  • .
                                                                                                                                                                                  • Dave Carlson, who had worked with Keiper, continued to refine and mature the details of the design until selection of fastener materials and other details of the design until it is now quite workable. So far, he has not to my knowledge tried to market it. See Dave Carlson?s website at

                                                                                                                                                                              http://www.fastsail.com/catcobbler/

                                                                                                                                                                                  • .

                                                                                                                                                                                  • Recently there has been quite a bit of interest and experimentation in adding foils for racing in the International Moth Class, and resouces for foils have developed concurrently. For example, see

                                                                                                                                                                              http://imca-wa.freeyellow.com/Resources.html

                                                                                                                                                                                  • Finally, this is not a kit, but I mention it as an item of interest from the marketing point of view. Aside from radio controlled models, the home-grown hydrofoil design that has generated the most interest recently on the IHS site (in terms of correspondence) has been Steve Gresham?s design, which according to Steve is sufficiently developed to go to manufacture. This is offered for sale on the Announcements page at

                                                                                                                                                                              http://www.foils.org/announce.htm#sale

                                                                                                                                                                              [Date/Time=11-28-2002 – 8:25 AM]

                                                                                                                                                                              Name:Barney C. Black webmaster@foils.org, [Msgid=344445]
                                                                                                                                                                              Sea Wings

                                                                                                                                                                                  • The recent inquiry concerning Sea Wings got me looking through my files. If anyone is interested, the August 1958 copy of “The Rudder” has a front cover picture and an article starting on Page 6 concerning commercial development by Dynamic Developments Inc. of a hydrofoil system they developed for 14-16 foot outboards. The trademark for this system was Sea Wings.

                                                                                                                                                                              [Date/Time=12-15-2002 – 11:31 AM]

                                                                                                                                                                              Name:Robert Miller cbbi@aol.com, [Msgid=351587]
                                                                                                                                                                              Seeking information on unusual Volga

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • Can anyone help in identifying the Volga hydrofoil (photo attached) which I have just purchased in Wales, UK. I was unable to get any info about the crafts history as the owner passed away and it was sold to me by a relative of his. It is only missing the Volvo engine and live ammo for the thing on engine cover. Any info would be welcome.

                                                                                                                                                                              [Date/Time=12-23-2002 – 12:28 AM]

                                                                                                                                                                              Name:Mick Matthews (via M. Grimm) seaflite@alphalink.com.au, [Msgid=354794]
                                                                                                                                                                              Attached File  “volga1~jpg.zip” – size 223254   Click Here To Download
                                                                                                                                                                              Seeking information on unusual Volga

                                                                                                                                                                                  • Mick,
                                                                                                                                                                                  • On the face of it, it seems like a former Soviet river / coastal patrol craft although I have never read anything about the Volga being used in such a role. The launcher on the engine cover looks like a chaff or flare launcher used to decoy heat seeking or radar based missiles. I have never seen any images of a Volga with a built up cabin such as shown in the photos of your craft, but that may have been the result of a special request for a police / military order.
                                                                                                                                                                                  • It is also possible that this craft was modified and painted up from an ordinary civil Volga for the purposes of being used in a movie.
                                                                                                                                                                                  • The model seem to be a Volga 70. That is the type that had the Volvo Penta stern drive fitted instead of a Russian engine combined with a normal inclined shaft and propeller.
                                                                                                                                                                                  • Hope someone else know more about your particular craft.

                                                                                                                                                                              [Date/Time=12-23-2002 – 12:48 AM]

                                                                                                                                                                              Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=354802]
                                                                                                                                                                              Seeking information on unusual Volga

                                                                                                                                                                                  • I suggest you email this photo to Konstantin Matveev and ask for information. You can contact him through his website at

                                                                                                                                                                              http://www.hydrofoils.org/
                                                                                                                                                                              [Date/Time=12-23-2002 – 5:45 AM]

                                                                                                                                                                              Name:Barney C Black webmaster@foils.org, [Msgid=354851]
                                                                                                                                                                              Seeking info on unusual Volga

                                                                                                                                                                                  • Yes, this is Volga boat. The pictures are very interesting. I have not seen such a version before. Though it is not surprising to see this, since 7,000 boats of the Volga type were produced.

                                                                                                                                                                              [Date/Time=12-27-2002 – 6:12 PM]

                                                                                                                                                                              Name:Konstantin Matveev matveev@its.caltech.edu, [Msgid=355987]
                                                                                                                                                                              Hydrofoil owned by Aristotle Onassis

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • In the 1996 book “Flying Boats and Amphibians since 1945” by David Oliver there is discussion about some of the amphibian aircraft owned by Aristotle Onassis. The text also has a passing reference to his motor yacht ‘Christina’ which was “a $4 million conversion of an ex-Canadian frigate that had deck space for several speedboats, a hydrofoil and two amphibians”. There are some photos of ‘Christina’ to be found on the www, but so far, I have found none clearly showing a hydrofoil on board.
                                                                                                                                                                                  • I am naturally curious about what type of hydrofoil that may have been. It would needed to have been reasonably small to be lifted onto the deck of the motor yacht, perhaps a Volga or Aquavion Waterman? Rodriquez also show on their website a hydrofoil motor boat which was referred to as the ROL 700 (Yard Number 177, delivered 1973) and that would have looked the part as a tender for such a large luxury yacht.
                                                                                                                                                                                  • If anyone knows the hydrofoil type that was carried on ?Christina? or has a picture of the craft, I would be pleased to hear from you.

                                                                                                                                                                              [Date/Time=01-01-2003 – 3:29 AM]

                                                                                                                                                                              Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=357444]
                                                                                                                                                                              Restoring a Volga 70 – Need Advice

                                                                                                                                                                                  • On Dec. 31st. I was able to buy a 1974 Volga 70 with a Volvo Penta diesel stern drive The boat sat behind a machine shop in Sarnia Ontario Canada for more than twenty years. It appears that the boat had very limited usage and there is no evidence of any damage to the hull except for a bump on its nose that popped about six rivets. All wood, rubber and seat material has completely disintegrated. The drive unit looks very good and the diesel engine rolled over easily with a wrench on the crank shaft. To avoid learning the hard way I would appreciate any restoration information available. All information for my restoration will be appreciated.

                                                                                                                                                                              [Date/Time=01-06-2003 – 7:13 AM]

                                                                                                                                                                              Name:Dave Stewart dave.stewart1@sympatico.ca, [Msgid=359228]
                                                                                                                                                                              A Volga at Stockholm Boat Show 2003

                                                                                                                                                                                  • Three of the Volgas in Stockholm area is undergoing restoration.
                                                                                                                                                                                  • One of them is planned to appear at the No1 Boat Show in Sweden,
                                                                                                                                                                                  • the Stockholm Boat Show starting March 1st 2003. The russian
                                                                                                                                                                                  • GAZ53 engine will be replaced with a GM V8 305 cu.in. and the
                                                                                                                                                                                  • original V-drive will be restored and refitted. In next summer
                                                                                                                                                                                  • season there will be approx. 10 Volgas operational in the
                                                                                                                                                                                  • Stockholm archipelago and a Volga meeting is planned to take place
                                                                                                                                                                                  • end of August 2003. Club Volga Stockholm will supply additional
                                                                                                                                                                                  • info on request.

                                                                                                                                                                              [Date/Time=01-18-2003 – 7:42 PM]

                                                                                                                                                                              Name:Jan Wennerstrom volga.stockholm@bredband.net, [Msgid=363963]
                                                                                                                                                                              Hydrofoil Stablizer Mods

                                                                                                                                                                                  • I am wondering if the size of the hydrofoil stablizer makes a difference. I have a 50 h.p. Force outboard with a Stingray hydrofoil stabilizer… the full size model. I used to have a junior size model on my other boat. There is about a 4 or 5 in diffence in size. Does the size make a difference? If so, can I do any modifications to the full size model such as cutting or shaping it?

                                                                                                                                                                              [Date/Time=02-07-2003 – 8:32 AM]

                                                                                                                                                                              Name:Rick fbarter@sbcglobal.net, [Msgid=373850]
                                                                                                                                                                              Want a ride on Hydrofoil

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • I have been studying HYDROFOIL designs, and think I have “nailed” it. Now need to ride on someone’s craft. I live in South Florida but am willing to go anywhere in NA for an extended ride. Any one have an operating Hydrofoil Boat who can accomodate my request?

                                                                                                                                                                              [Date/Time=06-03-2003 – 7:31 AM]

                                                                                                                                                                              Name:Gerry Levine gerrymega@adelphia.net, [Msgid=446220]
                                                                                                                                                                              Re; Want a ride on Hydrofoil

                                                                                                                                                                                  • Take at look at the following website about

                                                                                                                                                                              TALARIA III

                                                                                                                                                                                  • , which is a fully submerged hydrofoil design with automatic control system:

                                                                                                                                                                              http://mysite.verizon.net/res6pe7p/index.htm

                                                                                                                                                                                  • If that corresponds with your interest, then contact Harry Larsen at

                                                                                                                                                                              talaria@foils.org

                                                                                                                                                                                  • .

                                                                                                                                                                                  • There are some larger commercial hydrofoils of the Russian surface-piercing design operating to Niagara Falls. See the website:

                                                                                                                                                                              http://www.seaflights.com/home.php


                                                                                                                                                                              [Date/Time=06-06-2003 – 10:04 PM]

                                                                                                                                                                              Name:Barney C. Black webmaster@foils.org, [Msgid=448485]
                                                                                                                                                                              Volga info

                                                                                                                                                                                  • I just bougt a volga hydrofoil that was built in 84 and its not with the volvo sterndrive but with a gearbox. the problem is that i got the whole driveline exept the engine in boxes so i do not know were everything should go, is there anyone who has a drawing of the original engine installation with cooling and lubrication. i also would like to know about the electrical system sinse i do not understand Russian. the original engine i think was a GAZ v8.

                                                                                                                                                                              [Date/Time=06-25-2003 – 4:03 AM]

                                                                                                                                                                              Name:Peter Segerblom peter@apicius.se, [Msgid=459415]
                                                                                                                                                                              New Look for PHM-6 GEMINI

                                                                                                                                                                                  • On our PHM 5 ARIES website (

                                                                                                                                                                              http://www.ussaries.org/

                                                                                                                                                                                  • ) we have posted pics of the Gemini. You won’t believe how different she looks since being purchased by someone turning her into a private yacht.


                                                                                                                                                                              [Date/Time=08-08-2003 – 4:57 PM]

                                                                                                                                                                              Name:Eliot James esjames@cvalley.net, [Msgid=484407]
                                                                                                                                                                              1940s pleasure hydrofoil

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • As a youth living in Winnipeg Manitoba I was fascinated by boats. I remember crossing the Louise Bridege over the Red River by bus one day (probably around 1959-62)and seeing a hydrofoil parked ashore at the Buchanan? marina. The boat appeared to be about 19′, wood and shaped like a Chris Craft barrelback of the early forties. The foil was beautiful and appeared to be made of bronze?. I remember the prop shaft was very long, say 16-19′.
                                                                                                                                                                                  • Does anyone know of this craft?

                                                                                                                                                                              [Date/Time=08-09-2003 – 12:20 PM]

                                                                                                                                                                              Name:Larry Bruder lebruder@mts.net, [Msgid=484754]
                                                                                                                                                                              Re; 1940s pleasure hydrofoil

                                                                                                                                                                                  • Are you possibly talking about a Volga 70? See photos at

                                                                                                                                                                              http://www.foils.org/gallery/volgaall.htm

                                                                                                                                                                                  • . That craft does not date back to the 1940s, however. For another (remote) possibility, take a look at photos of the Trixie de Luxe at

                                                                                                                                                                              http://www.inocean.no/trixi/

                                                                                                                                                                                  • .

                                                                                                                                                                              [Date/Time=08-10-2003 – 5:42 PM]

                                                                                                                                                                              Name:Barney C Black webmaster@foils.org, [Msgid=485395]
                                                                                                                                                                              Re; Re; 1940s pleasure hydrofoil

                                                                                                                                                                                  • Barney, Larry,
                                                                                                                                                                                  • The Volga is fairly much an aluminium boat with stainless steel foils, no wood in it to speak of. This probably rules it out as a possibility. Also, the drive shaft on the Volga is not of the order of the length of the boat, even for the models with the original russian engive and V-drive gearbox.
                                                                                                                                                                                  • Two other possibilities are the Rodriquez ROL 700 a smallish hydrofoil pleasure boat or one of the pleasure craft / tender boats built by the Vertens yard in Germany in the 60’s. I will post a separate message about those shortly.

                                                                                                                                                                              [Date/Time=08-12-2003 – 10:55 AM]

                                                                                                                                                                              Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=486429]
                                                                                                                                                                              I am looking for a Trampofoil!

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • I want to buy a Trampofoil. I REALLY want it! Do you know of one that is unloved? I will love it well!

                                                                                                                                                                              [Date/Time=08-13-2003 – 1:11 PM]

                                                                                                                                                                              Name:Leslie Ekker lekfx@comcast.net, [Msgid=487148]
                                                                                                                                                                              re; `40s foil

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • Barney, Martin
                                                                                                                                                                                  • Not a Volga. Examining the photos of the Volga I can say that the foils on the “boat” that i am asking about were deeper than the Volga. I remember that there was an equally deep rear pillar-rudder. i can’t recall if there was a foil at the rear or if it was just a planing surface…a planing surface I think. Something else that may be a clue. In looking for foils on the ‘net I returned a reference to Sir William Stevenson, Canada’s famous spy-master; he was interested in foils.He was from Winnipeg, and ran some operations here during WWII. I’m intrigued whether this “boat” may be linked to him.
                                                                                                                                                                                  • Larry

                                                                                                                                                                              [Date/Time=08-14-2003 – 10:05 AM]

                                                                                                                                                                              Name:Larry Bruder lebruder@mts.net, [Msgid=487693]
                                                                                                                                                                              Hydrofoil Tender for Onassis Yacht

                                                                                                                                                                                  • I have been able to establish that the hydrofoil tender / pleasure craft owned by Onassis (see my previous posted message) was built by the Vertens Werft in Germany. Details can be found in a pdf document “Die Vertens-Werft” (in German) prepared by Walter Koblank and available at the following internet site:

                                                                                                                                                                              www.fky.org/literatur/hefte/fky10-vertens.pdf

                                                                                                                                                                                  • From the document: In ~1952, the Greek shipowner Onassis, which at that time had contracted with the Kiel based Howaldswerken for the construction of the large luxury yacht ‘Christina’, ordered from Vertens-Werft a sport boat, which should drive at 100 km/h. It was later handed over to Mrs Onassis. The hydrofoil boat was equipped with a Merceded Benz 300 engine. At the time, the 6.20m long boat cost 100,000 DM.
                                                                                                                                                                                  • A photo of an apparently similar hydrofoil delivered to a South American customer appears in the article.

                                                                                                                                                                              [Date/Time=08-18-2003 – 9:40 AM]

                                                                                                                                                                              Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=489778]
                                                                                                                                                                              Re; re; `40s foil

                                                                                                                                                                                  • Larry,
                                                                                                                                                                                  • I can’t give you any further leads ony the possibility Sir William Stevenson was asociated with the hydrofoil you once saw.
                                                                                                                                                                                  • As I mentioned previously, series of hydrofoil motor boats built by the Vertens Werft in Germany may fit the description you have given. Details can be found in a pdf document “Die Vertens-Werft” (in German) prepared by Walter Koblank and available at the following internet site:

                                                                                                                                                                              www.fky.org/literatur/hefte/fky10-vertens.pdf

                                                                                                                                                                                  • A photo of a hydrofoil delivered to a South American customer appears in the article. Is that perhaps the type of craft you recall seeing?

                                                                                                                                                                              [Date/Time=08-18-2003 – 9:51 AM]

                                                                                                                                                                              Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=489781]
                                                                                                                                                                              Re; I am looking for a Trampofoil!

                                                                                                                                                                                  • Although I own a Trampofoil, I don’t know of any for sale. There were only about 100 sold. They were too expensive to sell in large numbers and the company doesn’t exist any more.
                                                                                                                                                                                  • You can try mine out if you want to come to Nuneaton England.

                                                                                                                                                                              [Date/Time=08-18-2003 – 3:51 PM]

                                                                                                                                                                              Name:Malin Dixon gallery@foils.org, [Msgid=489960]
                                                                                                                                                                               Image Attached:  “A1_OLA1_.JPG”   Click Here To View
                                                                                                                                                                              Dynafoil Specifications Needed

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • I found a dynafoil in a rubbish pile and was curious so I brought
                                                                                                                                                                                  • it home. It is missing the power plant and missing just below the rear
                                                                                                                                                                                  • foil. I would like info on where to find specs and how it operates and
                                                                                                                                                                                  • maintenance. I also am a pwc owner.

                                                                                                                                                                              [Date/Time=09-13-2003 – 9:09 AM]

                                                                                                                                                                              Name:Glenn grandpoopa@juno.com, [Msgid=506509]
                                                                                                                                                                              Re; Dynafoil Specifications Needed

                                                                                                                                                                                  • Glenn, several Dynafoil owners have posted messages on the IHS bulletin board over the years. You should read their postings and then contact any directly that you think could help you based on the content of their messages. We currently have archived messages in two places. Those archives dating back to before we established the automated BBS can be found from the IHS Main Page at

                                                                                                                                                                              http://www.foils.org

                                                                                                                                                                                  • … scroll down to the bottom of the page to find the search engine, type in the word dynafoil and you will get several links to explore on the site. Next, go to the BBS itself, which is hosted separately from the IHS site. There is a link to go there on the main IHS page. It is located in the green Site Directory. When you are on the BBS you can search both the current messages and the archives in the same way. Good luck on your project. If you find a good source of the specs, manuals, parts sources, etc. please share the information with the IHS community by posting what you have learned on the BBS

                                                                                                                                                                              [Date/Time=09-13-2003 – 9:16 AM]

                                                                                                                                                                              Name:Barney C Black webmaster@foils.org, [Msgid=506512]
                                                                                                                                                                              VolgaVingen runs nicely

                                                                                                                                                                                  • VolgaVingen back in water after 3 year on land. Runs very well!
                                                                                                                                                                                  • At rpm 3200 on the GM V8 305 c.i. it does 36 knots with a
                                                                                                                                                                                  • gearbox 1,52:1. Itœµ a bit light and runs free on wings already
                                                                                                                                                                                  • at 25 knots. At speed 32+ the aft is very high and stearing
                                                                                                                                                                                  • is a bit hazardous.
                                                                                                                                                                                  • The hull anods of magnesium hangs outside in port only and
                                                                                                                                                                                  • is grounded inside in hull with a coated stainless wire.
                                                                                                                                                                                  • Take of has been no problem even with nine people onboard.
                                                                                                                                                                                  • So I guess a 6 cyl engine 4.3 ltrs would have been sufficient
                                                                                                                                                                                  • power – or a bit higher gear.
                                                                                                                                                                                  • Regards Jan Wennerstr?

                                                                                                                                                                              [Date/Time=09-22-2003 – 6:48 PM]

                                                                                                                                                                              Name:Jan Wennerstrom volga.stockholm@bredband.net, [Msgid=512314]
                                                                                                                                                                              Volga pics

                                                                                                                                                                                  • VolgaVingen in port of Stockholm Oct.2003. 2 pics.

                                                                                                                                                                              [Date/Time=10-15-2003 – 4:53 PM]

                                                                                                                                                                              Name:Jan Wennerstrom jan.wennerstrom@bredband.net, [Msgid=525908]
                                                                                                                                                                               Image Attached:  “Loudden.JPG”   Click Here To View
                                                                                                                                                                              Volga pics

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • VolgaVingen in Stockholm

                                                                                                                                                                              [Date/Time=10-15-2003 – 5:00 PM]

                                                                                                                                                                              Name:Jan Wennerstrom jan.wennerstrom@bredband.net, [Msgid=525914]
                                                                                                                                                                               Image Attached:  “WingLift.JPG”   Click Here To View
                                                                                                                                                                              Re; Volga pics

                                                                                                                                                                                  • Looks great, Jan… almost too nice to put into the water!

                                                                                                                                                                              [Date/Time=10-25-2003 – 7:48 PM]

                                                                                                                                                                              Name:Barney C Black webmaster@foils.org, [Msgid=532303]
                                                                                                                                                                              Power Ski?

                                                                                                                                                                                  • Found a personal watercraft with the name Power Ski on both sides, hydrofoil similar to early wetbike? Appears to have been powered by a small outboard located right behind seat. Great condition but motor is missing. Can anyone shed some light on who manufactured or how I can find more on Power Skis?

                                                                                                                                                                              [Date/Time=11-06-2003 – 2:48 PM]

                                                                                                                                                                              Name:Elton Hill hillhavenllc@yahoo.com, [Msgid=539070]
                                                                                                                                                                              Greatest Movie Gadgets – History Channel

                                                                                                                                                                                  • For hydrofoilers in the USA: The History channel has scheduled the show GREATEST MOVIE GADGETS, Featuring IHS Member Harry Larsen’s hydrofoil Bayliner TALARIA. It airs on the History Channel, Sunday, November 30, 2003 at 8pm EST.

                                                                                                                                                                              [Date/Time=11-21-2003 – 10:17 PM]

                                                                                                                                                                              Name:Barney C Black webmaster@foils.org, [Msgid=548415]
                                                                                                                                                                              Flying Car

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • You’re not going to belive this:

                                                                                                                                                                              http://www.rinspeed.ch/pages/cars/splash/prd-splash-fotos.htm
                                                                                                                                                                              [Date/Time=02-28-2004 – 1:02 AM]

                                                                                                                                                                              Name:Tom Speer me@tspeer.com, [Msgid=604866]
                                                                                                                                                                              Cruiser boat required on charter

                                                                                                                                                                                  • Our company is looking for a Cruiser boat enough for 250 passengers for around 20 days charter. Fo details please contact us immediately.
                                                                                                                                                                                  • Atrh
                                                                                                                                                                                  • ceo
                                                                                                                                                                                  • Golden Shippers

                                                                                                                                                                              ianduhere@yahoo.com
                                                                                                                                                                              [Date/Time=03-01-2004 – 8:32 AM]

                                                                                                                                                                              Name:Arthur ianduhere@yahoo.com, [Msgid=605824]
                                                                                                                                                                              asRe; Dynafoil Specifications Needed

                                                                                                                                                                                  • There are 2 of these for sale in San Luis Obispo, CA. They are nearly completely intact and are on their own side-by-side trailer.
                                                                                                                                                                                  • Very cool looking and I’d love to see one in action!

                                                                                                                                                                              [Date/Time=03-07-2004 – 11:24 PM]

                                                                                                                                                                              Name:Todd austinado16@cs.com, [Msgid=609505]
                                                                                                                                                                              asRe; Dynafoil Specifications Needed

                                                                                                                                                                                  • I would be interested in the two Dynafoils that are for sale, we have 4 now, one we have flying which is currently on display at the USS Aries Hydrofoil Memorial. Bob has mpegs showing her in flight on the Aries website,

                                                                                                                                                                              www.ussaries.org

                                                                                                                                                                                  • , follow the link “click here for more photos and footage” where you will see several video clip of hydrofoils including a couple on a Dynafoil.

                                                                                                                                                                              [Date/Time=03-08-2004 – 9:26 AM]

                                                                                                                                                                              Name:Eliot James esjames@cvalley.net, [Msgid=609646]
                                                                                                                                                                              STEVENSON SPORTFOIL PLANS

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • I HAVE A COPY OF THE STEVENSON SPORTFOIL PLANS IF ANY ONE IS INTERESTED.
                                                                                                                                                                                  • THANKS CHRIS

                                                                                                                                                                              [Date/Time=03-12-2004 – 12:37 PM]

                                                                                                                                                                              Name:CHRIS HALL HALLBOYS@BELLSOUTH.NET, [Msgid=612416]
                                                                                                                                                                              Re; STEVENSON SPORTFOIL PLANS

                                                                                                                                                                                  • Chris, IHS has had several inquiries about plans for the Sportfoil over the years. The Back Yard Yacht Club sold out of these several years ago and decided not to print another batch, so they have been completely unavailable. I have not even seen any for auction on eBay. I would be very interested to know, first, whether you actually built a Sportfoil from the plans. If so, a description of your experience and some fotos would be a great feature for the IHS newsletter. Second, perhaps you could describe the plans so I could gauge the feasibility of reproducing copies of them for a reasonable price, i.e. how many drawing sheets and what size? Is there an instruction book, and if so how many pages and what size? It is quite possible the Mike Stevenson would give his permission to reprint the design so that you could then sell several copies.

                                                                                                                                                                              [Date/Time=03-12-2004 – 7:18 PM]

                                                                                                                                                                              Name:Barney C Black barney@alum.mit.edu, [Msgid=612678]
                                                                                                                                                                              Re; Flying Car

                                                                                                                                                                                  • I saw this on the Discovery Channel either 3/13/04 or on 3/14/04. The car goes over 100mph on land, about 30 mph on the water on its foils or just putters along IN the water slowly until enough power is supplied. It all runs on the same engine, which is not particularly powerful. They’re not for sale unfortunately, but the design of the stern foil and side retracting v-shaped surface-piercing foils are exactly what I would like to do, on a larger scale, on my 28′ Trojan. Yours, David W. Rynders

                                                                                                                                                                              [Date/Time=03-15-2004 – 2:15 PM]

                                                                                                                                                                              Name:David W Rynders, Naples, FL drynders@earthlink.net, [Msgid=614278]
                                                                                                                                                                              asRe; Dynafoil Update

                                                                                                                                                                                  • Hi again,
                                                                                                                                                                                  • My brother and I finally bought the Dynafoils and it turns out there were actually 3 of them. 1 is an “early” 340cc model without trim tabs and the other 2 are the later 440cc models with trim tabs.
                                                                                                                                                                                  • If anyone would like to share info on them, we’d sure appreciate it. We’d ultimately like to get all 3 up and flying, but they need quite a bit of engine repairs, all 3 carburetors and air cleaners are missing, and 2 of the rubber ring drive-shaft couplings are missing.
                                                                                                                                                                                  • We’d sure be thankful for a copy of a repair manual and an owner’s manual if anyone would be interested in doing that. We’d also like any info on parts sources for the Chaparral (Fuji Motor Co.) engines.
                                                                                                                                                                                  • I was just reading on another guy’s site that only about 500 of these were ever made and they were around $3,500.00 brand new in the mid/late 70’s. Pretty amazing!

                                                                                                                                                                              [Date/Time=04-26-2004 – 2:07 AM]

                                                                                                                                                                              Name:Todd Miller austinado16@cs.com, [Msgid=637007]
                                                                                                                                                                              Dynafoil Information

                                                                                                                                                                                  • I replied to your message personally, but I would like anyone else out there looking for Dynafoil info to know I am here to help. I’m not selling anything, but I do have several models from different years, all the manuals, some pictures and video. I also have access to a full machine shop. If there is something you need, I’ll do what I can to help. There is nothing quite like a Dynafoil, it would be a shame to let them rot. Drop me a line If I can help, Scott.

                                                                                                                                                                              [Date/Time=04-26-2004 – 8:53 AM]

                                                                                                                                                                              Name:Scott Smith ssmith@veinrxinc.com, [Msgid=637078]
                                                                                                                                                                               Image Attached:  “IMG_0115.jpg”   Click Here To View
                                                                                                                                                                              Re; Dynafoil Information

                                                                                                                                                                                  • Hi Scott,
                                                                                                                                                                                  • Thank you very much for all the fantastic photos you sent of your Dynafoil in action. Amazing and you Dynafoil is beautiful! I appreciate your fast response and I’m looking forward to talk with you more.
                                                                                                                                                                                  • I agree, it’s a shame to see them rot and my hope is that we can get all 3 flying again.

                                                                                                                                                                              [Date/Time=04-26-2004 – 12:18 PM]

                                                                                                                                                                              Name:Todd Miller austinado16@cs.com, [Msgid=637201]
                                                                                                                                                                              Project in Western Carolinas

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • I’m picking up again on my pontoon boat/foil again and wonder if there is anyone nearby who might be interested in “pounding heads” on the various design tradeoffs. Not looking for financial support or an ownership partner. I am in Seneca, SC, near Greenville, Spartanburg and Anderson, SC and 2 hours from Atlanta.

                                                                                                                                                                              [Date/Time=04-26-2004 – 6:05 PM]

                                                                                                                                                                              Name:Barry Steele bsteele971@hotmail.com, [Msgid=637369]
                                                                                                                                                                               Image Attached:  “020715_Engine_Install.jpg”   Click Here To View
                                                                                                                                                                              1961 Grumman Hydrofoil found

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • Hi,
                                                                                                                                                                                  • I just bought a 1961 14′ 6″ aluminum runabout that was pretty much stripped down for refurbishing and never finished. The previous owner said is was a “Hydro Ski”. He had used it without the skis.
                                                                                                                                                                                  • I am a fabricator and welder. I sure would like to find information
                                                                                                                                                                                  • so I could put this boat back into hydrofoil working order.

                                                                                                                                                                              covert_d@bellsouth.net

                                                                                                                                                                                  • Dana

                                                                                                                                                                              [Date/Time=05-09-2004 – 9:45 PM]

                                                                                                                                                                              Name:Dana Covert covert_d@bellsouth.net, [Msgid=644393]
                                                                                                                                                                              Re; 1961 Grumman Hydrofoil found

                                                                                                                                                                                  • Take a look at the manual at the following URL and see if it is of any help…

                                                                                                                                                                              http://www.exigent.info/seawings/Grumman%20Sea%20Wings%20Manual.pdf
                                                                                                                                                                              [Date/Time=05-13-2004 – 5:43 AM]

                                                                                                                                                                              Name:Barney C Black bblack11@cox.net, [Msgid=646467]
                                                                                                                                                                              Re; Project in Western Carolinas

                                                                                                                                                                                  • Barry,
                                                                                                                                                                                  • I am most interested to hear what you are doing with a pontoon boat,
                                                                                                                                                                                  • which might have hydrofoils on it. I am interested in doing the
                                                                                                                                                                                  • same thing on Lake Lanier.
                                                                                                                                                                                  • Please call 404-754-0030 or email

                                                                                                                                                                              jjboff@adelphia.net

                                                                                                                                                                                  • Thanks
                                                                                                                                                                                  • jim

                                                                                                                                                                              [Date/Time=05-31-2004 – 2:19 PM]

                                                                                                                                                                              Name:Jim Boff jjboff@adelphia.net, [Msgid=656458]
                                                                                                                                                                              Re; Project in Western Carolinas

                                                                                                                                                                                  • Hi Barry, I will remind you that your original correspondence with IHS on this subject in 2001 is posted in the archives at

                                                                                                                                                                              http://www.foils.org/motofoil.htm

                                                                                                                                                                                  • . I believe that most or all of the people that responded to you are still reachable, in case you want to follow up with them now.

                                                                                                                                                                              [Date/Time=06-02-2004 – 8:08 PM]

                                                                                                                                                                              Name:Barney C Black bblack11@cox.net, [Msgid=657942]
                                                                                                                                                                              Dynafoil Restoration Update

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • Just thought I’d give an update on how my brother and I are coming with the 3 Dynafoils that we found about 2 months ago.
                                                                                                                                                                                  • He’s decided to put a Kawasaki Jetski powerplant in his and has purchased a really early stand up Jetski that he can gut. This will give him electric start, more modern ignition, and an easier source of parts, as well as access to performance parts.
                                                                                                                                                                                  • I’ve decided to go with the original set up and have found a source for NOS (New Old Stock) Chaparral/Xenoah engines. I’ve got one on the way right now. I’ve also contacted (thanks to this site and fellow Dynafoil owner Scott Smith) the lady who’s the goddess of the Walbro WDA-6 carb that were used on the Dynafoils. She’s building one for me this week. I decided to go the “simple” stock route hoping it would speed up the process and give me more of a drop in installation.
                                                                                                                                                                                  • I’m hoping to have the engine and carb here by next week and then start putting it all back together. I’ll provide another update as things progress.

                                                                                                                                                                              [Date/Time=06-09-2004 – 11:45 PM]

                                                                                                                                                                              Name:Todd Miller austinado16@cs.com, [Msgid=662061]
                                                                                                                                                                              Re; Dynafoil Restoration Update

                                                                                                                                                                                  • Thanks Todd, this is a most interesting restoration project. I look forward to seeing photos of the finished machines in action!

                                                                                                                                                                              [Date/Time=06-14-2004 – 8:50 PM]

                                                                                                                                                                              Name:Barney C Black bblack11@cox.net, [Msgid=664292]
                                                                                                                                                                              Re; Re; Dynafoil Restoration Update

                                                                                                                                                                                  • Brought the 2 trailer mounted ones home tonight and will start cleaning up the engine compartment on the one I’m doing tomorrow in preparation for the engine which will be here on Wednesday.
                                                                                                                                                                                  • I’ve already reupolstered the and put that back on tonight just to get a glimpse of the completed look.
                                                                                                                                                                                  • Spent Sunday at the lake with my brother being beaten to death by a couple of old school stand-up jetski’s. All I could think of the whole time was, “Man, wouldn’t it be nice to be up above all this wind chop and boat wakes!”

                                                                                                                                                                              [Date/Time=06-15-2004 – 12:47 AM]

                                                                                                                                                                              Name:Todd Miller austinado16@cs.com, [Msgid=664352]
                                                                                                                                                                              Re; Re; Dynafoil Restoration Update

                                                                                                                                                                                  • Time for another update:
                                                                                                                                                                                  • The Dynafoil I’m working on has turned into quite a project. The PTO drive (gearbox unit) that is located just aft of the engine was full of water instead of 90w gear oil. The seals and bearings are all shot, but the gears and other drive components, as well as the water pump, are all fine. The gear housing for the prop was also full of mostly water and the upper bearings for the long vertical driveshaft were also bad due to water contamination.
                                                                                                                                                                                  • The good news is that all of the seals and bearings are fairly standard items and the local bearing/seal place can get them. Some they had in stock, others will be here in a week.
                                                                                                                                                                                  • The fuel filler cap mounted to the starboard side bow was seized, but the entire assembly turns out to be a common boat part, so I purchased a new one locally and have it riveted back in place.
                                                                                                                                                                                  • The NOS engine and carb are sitting here waiting to go in. Even have a new “saga” coupler that joins the engine to the PTO drive sitting here. A company call “Lovejoy” in Illinois is still making them.
                                                                                                                                                                                  • While I wait for bearings and seals I’ll attend to the cosmetics and make new bunks for the trailer to replace the existing rotted ones.
                                                                                                                                                                                  • That’s about it for now.

                                                                                                                                                                              [Date/Time=06-17-2004 – 8:43 PM]

                                                                                                                                                                              Name:Todd Miller austinado16@cs.com, [Msgid=665724]
                                                                                                                                                                              Dynafoil update! In the water!

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • Hi All,
                                                                                                                                                                                  • The Dynafoil is done and I’ve just returned from a quick float and fire-up at a nearby lake. Didn’t leave the dock at the boat ramp, but did get it running, but it won’t idle. Minor adjustment there I’m sure. I brought tools, but was under a time crunch, I couldn’t play with much tuning/tweaking.
                                                                                                                                                                                  • The bilge pump didn’t work but I just got it working and put back in. No leaks that I could find, boat wise. The radiator cap is letting water squirt out of the little overflow tube for some reason. The cap looks perfect and I can see the line where it seals against the filler neck, so I don’t know why it’s doing that.
                                                                                                                                                                                  • I lowered the rear strut/outboard drive, but couldn’t get the prop to spin so maybe the drive wasn’t all the way down to engage the 2 fingered cogs with each other. I am getting drive through to the cog in the bottom of the hull where the outboard meets, so I’ll have to investigate that further too.
                                                                                                                                                                                  • I’m doing some little tweaking now and will probably go back up in a bit.

                                                                                                                                                                              [Date/Time=06-25-2004 – 4:46 PM]

                                                                                                                                                                              Name:Todd Miller austinado16@cs.com, [Msgid=669968]
                                                                                                                                                                               Image Attached:  “Dynafoilsinwater.jpg”   Click Here To View
                                                                                                                                                                              Re; Dynafoil update! In the water!

                                                                                                                                                                                  • Very nice… they look like new!

                                                                                                                                                                              [Date/Time=06-29-2004 – 8:08 PM]

                                                                                                                                                                              Name:Barney C Black bblack11@cox.net, [Msgid=672135]
                                                                                                                                                                              Re; Dynafoil update! In the water!

                                                                                                                                                                                  • Thanks Barney,
                                                                                                                                                                                  • Just the one with the black handle bars and seat is completed. The other one is still “as found,” so it’s pretty rough, but should polish and paint up nicely.
                                                                                                                                                                                  • I’ve had mine in the water 3 times now. Still no joy as far as riding it goes. I appear to be battling a carburetor issue because any amount of throttle just makes the engine bog and then it dies. All 3 of our Dynafoils were missing their carbs and airfilter assemblies, so we’ve had to start from scratch. I found an NOS Walbro WDA-6 (41mm) which is what the 440cc engine model came with. However, I’ve installed an NOS 340cc engine, so this may be too much carburetor.
                                                                                                                                                                                  • I’ve just found an NOS WD-6 (38mm) and am installing that, so that may make a difference. The carb for the 340cc model is apparently a WRA-30, but I don’t know what size that carb is, nor do I have a source for one.
                                                                                                                                                                                  • I’m also still battling a power supply problem to the bilge pump. I hope to have that handled by tomorrow.

                                                                                                                                                                              [Date/Time=06-30-2004 – 12:35 AM]

                                                                                                                                                                              Name:Todd Miller austinado16@cs.com, [Msgid=672262]
                                                                                                                                                                              RETRO FIT

                                                                                                                                                                              ViewThread

                                                                                                                                                                                  • I have just taken delivery of a new Lagoon Power 43 and I am looking to install hydrofoil(s) to improve performance. The boat is 11.2 tonnes and is powered by 2 x 285hp volvo pentas. Current cruising speed is 19 knots and flat out 23 knots. What is involved in design and retro fit of foils ? and who in the UK can help me ?

                                                                                                                                                                              [Date/Time=06-30-2004 – 7:12 AM]

                                                                                                                                                                              Name:TIM GRAY TIM@DAIRI-PAK.CO.UK, [Msgid=672323]
                                                                                                                                                                               Image Attached:  “A725184_1.JPG”   Click Here To View
                                                                                                                                                                              Dynafoil update! First Flight!

                                                                                                                                                                                  • Hi all,
                                                                                                                                                                                  • The dynafoil took flight for the first time this afternoon.
                                                                                                                                                                                  • Still a bit slow on the take off, but with a the smaller Walbro WD-6 (38mm)carb there was a noticeable difference and I was able to get up to flying speed. Once out of the water, the engine performed great and throttle response was fine. I have a bit of tweaking to do with the carb adjustments and hopefully that will make all the difference.
                                                                                                                                                                                  • It was really fun to ride. Very stable like a Seadoo/Waverunner, but with sort of a motorcycle feel.
                                                                                                                                                                                  • It was late in the afternoon so the light was bad for photos, but here’s a shot at speed.

                                                                                                                                                                              [Date/Time=07-02-2004 – 12:56 AM]

                                                                                                                                                                              Name:Todd Miller austinado16@cs.com, [Msgid=673541]
                                                                                                                                                                               Image Attached:  “Ridingatspeed.jpg”   Click Here To View
                                                                                                                                                                              Re; RETRO FIT

                                                                                                                                                                                  • Tim
                                                                                                                                                                                  • Great Cat.
                                                                                                                                                                                  • You might contact Maritime Dynamics of Maryland, USA. They are a subsiduary of Vosper Thorneycraft UK. at the below addresses.
                                                                                                                                                                                  • Email:

                                                                                                                                                                              sales@maritimedynamics.com

                                                                                                                                                                                  • Corporate Headquarters
                                                                                                                                                                                  • Maritime Dynamics, Inc.
                                                                                                                                                                                  • 21001 Great Mills Road
                                                                                                                                                                                  • Lexington Park, MD 20653 USA
                                                                                                                                                                                  • Tel: ? (301) 863-5499
                                                                                                                                                                                  • Fax: 1 (301) 863-0254
                                                                                                                                                                                  • Cell: 1 (240) 925-9787
                                                                                                                                                                                  • email:

                                                                                                                                                                              sales@maritimedynamics.com

                                                                                                                                                                                  • Directions to MDI (PDF)
                                                                                                                                                                                  • European Sales Office
                                                                                                                                                                                  • Vosper Thornycroft Marine Products, Ltd. Hamilton Road Cosham
                                                                                                                                                                                  • Portsmouth P06 4PX UK
                                                                                                                                                                                  • Tel: ?4 (0) 23 9253 9750
                                                                                                                                                                                  • Fax: 44 (0) 23 9253 9764
                                                                                                                                                                                  • email:

                                                                                                                                                                              scolliss@vtmp.co.uk

                                                                                                                                                                                  • They specialize in ride control, but can also put lift into the foil system.
                                                                                                                                                                                  • There are others who can probably help, but MDI has a solid reputation for over 20 years.
                                                                                                                                                                                  • Bill White

                                                                                                                                                                              [Date/Time=07-12-2004 – 2:43 PM]

                                                                                                                                                                              PRE 2002:

                                                                                                                                                                              International Hydrofoil Society Correspondence Archives…

                                                                                                                                                                              One- or Two-Person Sports Hydrofoils: Yamaha OU-32 Prototype, Tom Cat Wet Bike, Dynafoil, Others
                                                                                                                                                                              Descriptions, Advice, Sources of Information, and Requests For Help(Last Update: 9 Sep 03)


                                                                                                                                                                              (For notice of hydrofoils “For Sale” and “Wanted to Buy,” see the Announcements)Go to Posted Messages Bulletin Board for more recent postings

                                                                                                                                                                               


                                                                                                                                                                              Correspondence

                                                                                                                                                                              Dynafoil Personal Watercraft For Sale SOLD!!

                                                                                                                                                                              [27 Feb 02] I have two Dynafoil Personal Water Craft for sale. SOLD!!! Built 1978, one is in good running condition, and only needs a clean up. Has fresh Orange/Blue Denver Broncos paint, and new seat cover. The other is complete, but engine is not mounted in hull. Could be easily remounted and used, or kept for parts. These units have the high output 440cc engine, and come with original owners manual, parts and repair manual, documented service history, and spare parts. $500 for both, or $1000 for foils and a new dual Jetski trailer. I can deliver in the western USA — Doc (mirror@interfold.com) phone: +1-303-885-2302

                                                                                                                                                                              DYNAFOIL For Sale Sold

                                                                                                                                                                              [27 Dec 01, updated 30 Apr 02] For Sale Sold: 1978 Dynafoil Personal Watercraft Manufactured in Newport Beach, CA. 2cyl. 2 Stroke watercooled engine Ran great before put into covered storage 4 years ago Comes with manual, trailer, and clean Missouri title. Very good condition $500.00 or best offer. Located in St. Louis Missouri USA. Call Chris at 618-345-6845 or email cheuer@cpicorp.com

                                                                                                                                                                              Follow-up…[30 Apr 02] Thank you so much for publishing the ad for the Dynafoil dated 12/07/01! I am happy to report it has sold and would like to ask that you would please remove the ad from your site at your earliest convenience. I greatly appreciate your service and thank you once again. Chris Heuer (cheuer@cpicorp.com)

                                                                                                                                                                              Response…

                                                                                                                                                                              [7 Jun 02] I just recently purchased the Dynafoils that were listed near yours. I hope I ‘m not bothering you but I would like to know if the person who bought your boat left any contact info. I am trying to find other dynafoil enthusiasts and owners. Also feel free to give out my address if anyone else contacts you looking for Dynafoil info. — Scott Smith (ssmith@syntheon.com).

                                                                                                                                                                              Junkyard Wars

                                                                                                                                                                              [11 Oct 01, updated 25 Feb 02] On Feb.13, 2002 a show called Junkyard Wars was broadcast on The Learning Channel. Sunday the 17th at 10pm PST. It was repeated on Saturday the 23rd at 9 pm PST. If you missed the show, keep an eye out on the TV listing; it will surely be shown again. This is the USA version of Scrapheap Challenge, broadcast in Britain Nov 18, 2001 by Channel 4. See www.channel4.com/science/microsites/S/scrapheap. As a participant in this breathtaking, already-a-cult series, (I outlined, developed and calculated a weird “scrap-craft”) I consulted to the British team “Catalysts” (3 Jaguar engineers) http://rotaryboy.screaming.net/ in their battle against time and to the mighty American team “The Mulewrights”. — Claus-C. Plaass, Pickert- 10, 24143 Kiel, West Germany (plaass@foni.net), phone: +49-431-36 800; USA showtime provided by Matt Kirk (matric39@gte.net)

                                                                                                                                                                              Personal Hydrofoil Watercraft Project

                                                                                                                                                                              [11 Nov 01] I am a final year Industrial Product Design student at Coventry University, West Midlands, England. I have recently began my final year individual design project which is to design a new breed of water jet-powered Personal Watercraft (PWC). My intention is to design a sports-recreational product to be used by hobbyists and enthusiasts, with a view to possible competition use. Having looked at the existing PWC market which is largely dominated by stand-up and runabout Jet Skis, one of the ideas that I have come up with is to use hydrofoil technology incorporated with jet power to create a new high speed, highly manouverable single (possibly two) seater watercraft. Currently in the early stages of research for the project, I have yet to determine whether such a proposal would be feasible – whether or not the two technologies could be combined in a craft at all. I discovered an article on personal hydrofoils on the IHS website – and then found that I wasn’t the first person to have the personal hydrofoil-jet drive idea! It seems that many people/companies have carried out some jet-drive hydrofoil PWC product design and development but haven’t been able to, or haven’t chosen to, put their crafts into production. I’m particularly interested in finding out something about the Yamaha OU-32 project that you mentioned – I’ll be contacting Yamaha about it ASAP. I would be very grateful if you could send me, or point me in the direction of, any sources of information on hydrofoil PWC design. Comments and suggestions would also be very welcome. As an undergraduate Product Designer with little marine experience I would be very grateful for anything received . I can be contacted at the following E-mail addresses, or alternatively by post at: 44 Bedford Street; Earlsdon; Coventry; West Midlands CV1 3EW — Richard Yates (ryates@coventry.ac.uk) or (richyates@breathe.com)

                                                                                                                                                                              Response…[21 Jul 02] I found the following Japanese page hosted by Yamaha. Besides having some good photos of the OU32, it also has a RealMedia movie! Hope you find this as much fun to view as I did. http://www.yamaha-motor.co.jp/cp/challenge/expansion/ou32/ou32.html. It’s a shame they never mass produced it. Even 14 years later, it still looks pretty darned sexy and fun! — Aaron Sakovich (aaron@alphant.com) [Unfortunately, Yamaha upgraded their site and in the process deleted the page on the OU32. – Webmaster, 8 Sep 03]

                                                                                                                                                                              Personal Sport Hydrofoils, Power and Sail

                                                                                                                                                                              [28 Apr 01] I have some of my hydrofoil work uploaded to the web for your interest. — John Slattebo (raptor16@sbcglobal.net) website: http://hydrovisions.com/

                                                                                                                                                                              Monofoil Sailboat by John Slattebo Prototype One-Person Hydrofoil with Outboard Motor
                                                                                                                                                                              Drawing of One-Person Hydrofoil Motorboat A variant of the one-person hydrofoil motorboat design

                                                                                                                                                                              Hot Personal Hydrofoil For Sale

                                                                                                                                                                              [15 Apr 01, Updated 11 Nov 01] I thought you might be interested in my hydrofoil which I built some years ago. Click Here for a video clip of the Manta in action (file format: mpg; file size: 1.6 meg.) I would be happy to send you lots more photos as I am selling it. The hydrofoil which I call the ‘Manta foil’ (as in the Manta Ray) was developed with the idea of selling the product or concept to a larger manufacturing company and claiming a royalty. We got a long way down the road and were involved with some financial backers ( some better than others ), but as the partners involved dissolved their partnership (amicably ) we all went our separate ways, Graeme Vanner was a partner as was Gavin Cawood and Myself. When the Partnership dissolved I took the debts and for that I took with me all the equity in the company – its products, prototypes, tooling, intellectual property and so on. I was intending to develop the Manta Foil to sell myself in small numbers but my wife and babies have got in the way. I am an industrial designer/ stylist and used to style cars but now design Motor Yachts from 50 – 200 feet (if you want one give me a call). At the moment I am selling the prototype because I haven’t really got time to look for a manufacturer. Any potential buyer would receive the benefits of the knowledge gained in the work and testing to date. — Steve Gresham (Stevegresham@btinternet.com)

                                                                                                                                                                              Manta with foils folded up and engines removed.Steve on the Manta in a turnManta nose view ready for actionGraeme, Gavin, and Steve - Manta Partners

                                                                                                                                                                              Manta on land with foils downGavin on the Manta in a straightaway"Grabbing some air" on the Manta
                                                                                                                                                                              • Top Photos (Left to Right)
                                                                                                                                                                                • Manta with foils folded up, engine removed and ready to be lifted onto car rook by 2 people.
                                                                                                                                                                                • Steve on the edge
                                                                                                                                                                                • Nose view ready for action.
                                                                                                                                                                                • The team from left to right Graeme Vanner, Gavin Cawood on Manta, Steve Gresham standing
                                                                                                                                                                              • Bottom Photos (Left toRight)
                                                                                                                                                                                • Sitting on land with foils folded down (usually one folds the foils down after the craft is in the water; this is just for show).
                                                                                                                                                                                • Gavin running well
                                                                                                                                                                                • Grabbing some air as they say

                                                                                                                                                                              Dynafoil Personal Hydrofoil

                                                                                                                                                                              [12 Jan 99] I’m trying to find info about a personal hydrofoil water craft known as the “Dynafoil”. It was produced in the U.S. probably back in the 70’s and/or 80’s. It was ridden like a motorcycle, much like today’s personal water craft. It was propeller driven and rode on two retractable foils, one fore and one aft. Have you heard of or have any info on? I remember seeing it at various boat shows. — Steve Ebbert (Steve.Ebbert@SeagullEnergy.com) [This email address is no longer valid as of 6 Jan 01  – webmaster]

                                                                                                                                                                              James Bond Introduces the Wet Bike

                                                                                                                                                                              [16 Jul 98] The WetBike was invented at the same time that the standup Jet Ski was introduced. It was unveiled in the James Bond movie “The Spy Who Loved Me” in 1978. It was a real popular water craft prior to the introduction of the WaveRunner and SeaDoo designs. Wet Bike was bought out by Ultranautics in 1988 and eventually went belly-up in 1992. The WetBike remained extremely popular, especially on the Racing Circuit until recently when SeaDoo and the others took over the market. Wet Bikes parts are continually available by a few water craft businesses. There still is no ride like a Wet Bike. It’s nozzle is fixed (500 lbs. thrust) and its hydrofoils are steered by body weight and front ski handlebars, just like a motorcycle, not like the steering nozzle on today’s jet craft. — Steve Benn [BennS1B1@aol.com)

                                                                                                                                                                              Responses…[9 Sep 03] I am hoping you might know the name of a small jet boat that was made or marketed buy the same company in the early 1990s. It was small around 12 feet I think. It had a Suzuki inboard 2 stroke, and I’m pretty sure it only had 3 seats. — Mad Mac (madmac@syd.eastlink.ca)

                                                                                                                                                                              [23 Sep 00, updated 1 Jan 02]] According to the now defunctWetbike website at http://www.wetbike.net, “The original Suzuki powered, 50 horsepower version of the Wetbike was introduced in 1978 by Spirit Marine, a division of Arctic Enterprises. Early advertisements marketed the product as the “Wetbike Watercycle”: A motorcycle on water with a combination of all the thrills and fun of motorcycling, boating and waterskiing. Throughout its production run, which lasted from 1978 through 1992, the Wetbike received various changes, up-grades, technical advancements, and additional safety features, the most notable changes being the introduction in 1985 of a strong, exceptionally lightweight Metton body unit and in 1986, the introduction of a 60 horsepower, 800cc Suzuki motor, which brought the performance of the Wetbike to the pinnacle level of being the fastest personal watercraft available at that time.” According to the Ian Fleming Foundation website, the Wetbike ridden by James Bond in the move The Spy Who Loved Me “is the actual engineering prototype of the first Wetbike ever built. This Wetbike was ridden by Roger Moore when Bond travels across the water from a nuclear submarine to Stomberg’s oceanographic laboratory Atlantis. The Wetbike was invented by Nelson Tyler (U.S. Patent #3,948,206) who made a name for himself in the film industry by inventing the most popular helicopter camera-mount system available. Nelson Tyler generously donated this vehicle to The Ian Fleming Foundation in the Fall of 1992…See Goldeneye Magazine, Fall 1992, Issue 1, Volume 1, p15.” — Barney C. Black (Please use the BBS to reply)

                                                                                                                                                                              Yamaha Personal Hydrofoil SINGLE LEGGER

                                                                                                                                                                              [23 Feb 01] Mr. Kotaro Horiuchi has a long and amazing career of boat building, much of it with Horiuchi Labs of Yamaha Motor. He sent me his book called A Locus of a Boat Designer, [ISBN4-8072-4201-6], in which there is great detail on SINGLE LEGGER and many of his other projects. He tells me there’s a new book coming out soon which will cover the HPB and engine-powered hydrofoils in detail. Unfortunately, the books haven’t been translated from Japanese yet, but the pictures and charts are still quite useful. He built the boat in 1955, it has a 350cc 18hp outboard with a 16″ extension, it’s manually “flown” (no surface sensor), and as you saw, he reports 1.4G turns! There were several versions made including a tandem, and eventually Yamaha built the OR-S1 with a fully enclosed cockpit in one-, two-, and 12-seat configurations, but couldn’t market them because of liability concerns. The design eventually found its way to production as the Yamaha Marine Jet with no foils. I’d already asked Mr. Horiuchi to contact you and peruse your site, and I believe he will do so soon. He’s an amazing engineer and designer, and very well versed on all aspects of foil technology. He’s still very busy building and writing, but I hope you get a chance to chat with him. — Ron Drynan (info@humanpoweredboats.com)

                                                                                                                                                                              Yamaha Personal Watercraft on Discovery Channel

                                                                                                                                                                              [24 Oct 97] Does anyone remember an experimental hydrofoil produced by Yamaha? It was featured on one of the “what’s new” television shows a few years back. The hydrofoil had water jet drive, two in-line foils, and a single person bullet shaped hull. I’d like to find any info to build this one! — Carl (cws@chem.ucsd.edu)

                                                                                                                                                                              Responses…[updated 23 Feb 01] You did not imagine the Yamaha hydrofoil “Personal Watercraft” , nor are you the first to inquire about it. It appeared on the Discovery Channel TV Show “Beyond 2000” in 1990. It also appears on the Discovery Collector’s Edition VHS videotape “Super Boats and High Speed Hydroprototypes” distributed in 1992 by Discovery Program Enterprises, Inc. Bethesda MD 20814. I have seen several copies of this video go up for auction on Ebay over the last couple of years. The following was submitted a couple of years ago by Carl Allison (allison1@llnl.gov): “Yamaha demonstrated an OU-32, which was a fully enclosed two-man hydrofoil and it appeared on, I believe, “Beyond 2000″ [Discovery Channel TV show]. That was the epitome of the personal hydrofoil, lacking only automated height control. This the market where hydrofoils might best be pushed for adoption. Price/performance in this area in more nearly comparable with other personal water craft vs. military vessels and large fast transports. I just wish that Yamaha had really released the OU-32. There were rumors out of Australia, then silence.” To my knowledge this never went into production, at least not in the USA. If you wish to pursue this further, you might find someone in the Yamaha company that would steer you to the people who worked on the project. I have searched the web (though not recently) without finding anything on this. Other comments:

                                                                                                                                                                              • There is a fellow Owen Morris (106027.3356@compuserve.com) in England who recently completed a marketing plan, design, and prototype mockup of a hydrofoil jet ski. He sent us quite a bit of material on his project when he was starting it up… maybe he would send you a copy of this stuff too… you can contact him by mail or email… OK to tell him I sent you.
                                                                                                                                                                              • The only kits for motor-driven personal hydrofoils I know of are offered by Mike Stevenson’s Back Yard Yacht Club, $15 for plans to build the SPORTFOIL. Go to www.stevproj.com/BYYCHome.html. You might also be interested to look at the info on this web site about BYYC’s experimental [not yet available] “Hydroflier” accessible from the same site. [Editor’s note: as of Feb 01, the SPORTFOIL plans were sold out with no intent to reprint them].

                                                                                                                                                                              Personally I thought that hydrofoil Jet Skis were a marketable idea; however everybody told me that I was missing the point… Jet Ski owners don’t want a smooth ride, they like to have their spines pounded into powder by bouncing from swell to swell. In recent years I seem to notice the emergence of the bigger family style craft that you can sit down on and ride with relative comfort, so maybe hydrofoils are an idea whose time has come for Jet Skis. — Barney C. Black (Please use the BBS to reply)

                                                                                                                                                                              [23 Aug 98, updated 11 Nov 01] I think you miss the point. Jet Ski (Kawasaki registered trademark) riders want to cut, jump and have a lot of control. I’d appreciate any suggestions… I am initially working on a towable hydrofoil with basically 3-axis aircraft-like control to allow the craft to jump without a wake to cross. (Jumping another boat’s wake can be dangerous and illegal.) Additionally, long rides in choppy water will really beat you up. Especially if you are 40+ like me. An adjustable foil would allow you to use your energy when you really want to perform vs travel. I am working on a recumbent seating system with dual front foils having individual spoileron controls and a separate rear skeg (rudder). The spoileron controls should allow bank control, counteract tow forces and control the height. The rudder should control yaw. If this works out well enough, the next version will be powered. I’d appreciate any suggestions. Such as: The front foils need control, should I rotate the entire horizontal surface of the foil? Can I instead have trailing control surfaces like an airplane’s flaps? I’m planning on building the foils in from flat aluminum. — Barry Steele (barry_steele@yahoo.com)

                                                                                                                                                                               


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                                                                                                                                                                              Military

                                                                                                                                                                              Military


                                                                                                                                                                              The International Hydrofoil Society (IHS) Hydrofoil Correspondence Archives

                                                                                                                                                                              Updated last August 20, 2006

                                                                                                                                                                              Hydrofoils: Military
                                                                                                                                                                               

                                                                                                                                                                              Hydrofoils: Military      Top

                                                                                                                                                                               

                                                                                                                                                                              Archived Messages

                                                                                                                                                                              Count,MessageID,category,ShortTitle,Message,Date,UserName,MsgPswd,Phone,Email,ParentMsgId

                                                                                                                                                                              “1”,”949402″,”6″,”Re; Re; pch 1||949402″,”PCH-1 Iss the USS High Point built in 1963 first used by the Coast Gaurd”,”2005-12-18″,”Marty”,”nopswd”,” “,”nomadness56@msn.com”,”942906″

                                                                                                                                                                              “2”,”944319″,”6″,”Re; pch 1||944319″,”HIGH POINT (PCH-1) is presently tied up in Astoria Oregon, where it has been for the last few years.

                                                                                                                                                                              “,”2005-12-07″,”S. Arima”,”theboard”,” “,”SA_IHS_1980@verizon.net”,”942296″

                                                                                                                                                                              “3”,”942907″,”6″,”Re; pch 1||942907″,”Which one is PCH-1? Peter Squicciarini”,”2005-12-05″,”Peter Squicciarini”,”nopswd”,” “,”pdsquicciarini@msn.com”,”942296″

                                                                                                                                                                              “4”,”942906″,”6″,”Re; pch 1||942906″,”Which one is PCH-1? Peter Squicciarini”,”2005-12-05″,”Peter Squicciarini”,”nopswd”,” “,”pdsquicciarini@msn.com”,”942296″

                                                                                                                                                                              “5”,”942296″,”6″,” pch 1||942296″,” Wheres PCH-1 Now?”,”2005-12-04″,”Marty”,”nopswd”,” “,”nomadness56@msn.com”,”6″

                                                                                                                                                                              “6”,”888235″,”6″,”Re; lycoming avco LVHX1||888235″,”Tom, you would likely find a ready market for it on eBay; however before listing it there, you should be prepared for the possibility that it is US Government property that was never properly surplused and disposed of. You may get a protest to eBay if someone thinks that is the case and wants to recover it for a government agency or museum. I can’t guess what the possibility of that happening is. It depends on who sees the listing. It wouldn’t hurt to go back to the house where you bought it during the garage sale and ask where it came from. This projects dates back quite a few years, so it is possible that the person who had it has died.”,”2005-09-04″,”Barney C Black”,”nopswd”,” “,” “,”886399”

                                                                                                                                                                              “7”,”886399″,”6″,”lycoming avco LVHX1||886399″,”I found at a garage sale a model with many moving parts of the LVHX1-1 mounted on a plat form board. Painted on the side is USMC 1 and 7321175 Plate on board says United States Marine Corps LVH X1 Bureau of Ships Lycoming Division,Avco Corporation Can take pics,and would like to sell it.”,”2005-08-31″,”Tom”,”nopswd”,” “,”tlambie@swfla.rr.com”,”6″

                                                                                                                                                                              “8”,”886398″,”6″,”lycoming avco LVHX1||886398″,”I found at a garage sale a model with many moving parts of the LVHX1-1 mounted on a plat form board. Painted on the side is USMC 1 and 7321175 Plate on board says United States Marine Corps LVH X1 Bureau of Ships Lycoming Division,Avco Corporation Can take pics,and would like to sell it.”,”2005-08-31″,”Tom”,”nopswd”,” “,”tlambie@swfla.rr.com”,”6″

                                                                                                                                                                              “9”,”882078″,”6″,”Re; Expanding Our Battle Space||882078″,”Peter. This is my second request for your telephone number. I do not want to chat with you on the website.

                                                                                                                                                                              My name is Gerry Levine. I’m located near Boca Raton Florida. My phone number is 561 734-0192.

                                                                                                                                                                              Please call me.”,”2005-08-23″,”Gerry Levine”,”nopswd”,” “,”gerrymega@adelphia.net”,”881219″

                                                                                                                                                                              “10”,”881219″,”6″,”Expanding Our Battle Space||881219″,”I saw a terrific 15 minutes of hydrofoil development segment on History
                                                                                                                                                                              Channel program “Mail Call”. That’s the show where the Gunny Sergeant
                                                                                                                                                                              takes letters for interesting questions and then broadcasts the spots. Now
                                                                                                                                                                              I know that most of you probably have seen this footage. But it was well
                                                                                                                                                                              done in a positive and interesting spotlight. Great footage of PEGASUS (my
                                                                                                                                                                              PHM experience) which still brought memories of excitement (tears too)!
                                                                                                                                                                              Other PHMs footage also. Developmental hydrofoils included. My point of
                                                                                                                                                                              sharing this with you is NOT hydrofoil technology (you guys invented and
                                                                                                                                                                              proved it!) but the point is to pass along that the hydrofoil is not
                                                                                                                                                                              forgotten and is now being shown to this new generation. The final
                                                                                                                                                                              interview/quote was that as things go around and around, hydrofoils will be
                                                                                                                                                                              back as the latest “new” idea (I said that before). Due and thanks to many
                                                                                                                                                                              of you. Legacy. Those who said you couldn’t do it were shown you could
                                                                                                                                                                              (and did!) accomplish it. Keep watching! How about THIS “creative” idea?
                                                                                                                                                                              The high-speed catamaran is being embraced lately. My “warfare view” would be
                                                                                                                                                                              to equip that CAT with a number of fast-fast-fast hydrofoil “vehicles”,
                                                                                                                                                                              either manned (like ASW LAMPS HELO) or unmanned with artificial
                                                                                                                                                                              intelligence, to act like multiple “stinger-bees” deployed from the CAT.
                                                                                                                                                                              Force “multiplier”. More battle space covered, more situational awareness,
                                                                                                                                                                              more intell, huge stay time, all weather, sensor platform (no weapons needed
                                                                                                                                                                              as long range weapons delivered by CAT/other forces), and more benefits.
                                                                                                                                                                              Think about it. A “hydrofoil Predator” both inshore (LCS?) and offshore.
                                                                                                                                                                              Maybe riverine too?. Crazy? OK–would any of you like to send me their
                                                                                                                                                                              (creative) thoughts, both technical and tactical?? If those inputs were
                                                                                                                                                                              well thought out and articulated, I might (repeat “might”) draft up a short
                                                                                                                                                                              article for NAVAL INSTITUTE /other submissions and perhaps their
                                                                                                                                                                              publication. NO MATH FORMULAS! NO CURVES! “Realm of the possible
                                                                                                                                                                              thinking ONLY”! Don’t want to hear about lift, laminar flow, how big it
                                                                                                                                                                              can be made–but rather how “small” it can be made! If any takers and
                                                                                                                                                                              interest, then Over To You Guys. Exchange of practical ideas and
                                                                                                                                                                              applications is the only way-ahead, as I see it. Despite USN fixation on
                                                                                                                                                                              mega-Defense Contractors “dinosaur solutions”, I think the time could be
                                                                                                                                                                              good to get a think-piece in front of the folks who have been ordered to
                                                                                                                                                                              think (wow, what a concept!). I know ADM Mike Mullen whom I’m somewhat
                                                                                                                                                                              close to, would be interested to see this. Applications with USCG/HLS could
                                                                                                                                                                              be foreseable despite their embalming circa 1939, pre-nuclear age. Q.E.D.
                                                                                                                                                                              Cheers to ALL,

                                                                                                                                                                              Peter Squicciarini”,”2005-08-22″,”Peter D. Squicciarini”,”nopswd”,” “,”pdsquicciarini@msn.com”,”6″

                                                                                                                                                                              “11”,”856778″,”6″,”Re; Congratulations on IHS Progress||856778″,”We need to talk. I’m a IHS member, my patents are starting to issue, and I’m almost ready to start cutting metal. My name is Gerry Levine, living in west Palm Beach Florida. Can you call me late Thursday afternoon. Your name is familiar, but I have not been reading BB messages in a long time. Do you know William O’Neill? He is somehat familiar with my work, however he is covered by an NDA.

                                                                                                                                                                              561 628 5940 or give me your number and I’ll contact you.

                                                                                                                                                                              levinega@galusmarine.com”,”2005-07-06″,”Gerry Levine”,”nopswd”,” “,”gerrymega@adelphia.net”,”0″

                                                                                                                                                                              “12”,”856036″,”6″,”Congratulations on IHS Progress||856036″,”All IHS Board Members and Hydrofoil friends,

                                                                                                                                                                              I want to personally congratulate each and every one of you. Your interest and willingness, not often found in a volunteer group, keeps hydrofoils alive. And hydrofoils should be kept alive. All of us has seen (and I’m a relative newcomer from the ’80s”the hydrofoil go around and around in the advanced technologies for the sea. Well, what with the rise of more and more high performance technologies now being built to go to sea for lots of purposes, I believe hydrofoils are about due–and very soon, at that. Navies want a down and dirty “Street Fighter”. Well, the Cats are bumble bees compared to the “killer bees” of hydrofoils. Give it a bit more time, and especially IHS keepers of the faith, and we’ll all see hydrofoils back again as a “great idea” by the “Establishment”—“invented here” paradigm. Stand by folks! Cheers to all, Peter Squicciarini. (JOHN–PLEASE pass this on to the website for all to see–THX, Peter)”,”2005-07-05″,”Peter Squicciarini”,”nopswd”,” “,”whitewn@speakeasy.net”,”0″

                                                                                                                                                                              “13”,”844511″,”6″,”Re; Lines/Plans for PHM Pegasus?||844511″,”You should visit http://www.foils.org/modelrc.htm and read the historical correspondence on PHM models that is archived there. Also see http://www.foils.org/models.htm . Here are some excerpts:

                                                                                                                                                                              “The Mariners’ Museum’s Scale Ship Model Competition and Exhibition 2000,” Scale Ship Modeler (ISSN 1066-0275), Nov/Dec 2000 (Vol. 23, No. 5), pp. 36-37, 62. Features a 1:48 scale model of PHM-1 USS PEGASUS. Modeler Dean Leary of Statesville NC was awarded the Gold Medal under the Division I (Scratchbuilt) Class B (Powered Ships) category. “The Scale Ship Model Competition and Exhibition 2000 ran from June 17 until October 28, 2000. During these dates, visitors were able to see the top ship models in the world and participate in various activities associated with the exhibition on the opening weekend. For more information about the competition and exhibition, call The Mariners’ Museum at (757) 596-222 or (800) 596-2222, or write to: The Mariners’ Museum, 100 Museum Drive, Newport, VA 23606, or visit their Web site: www.mariner.org”

                                                                                                                                                                              Marine Modeling Monthly, March 1991, contains photos and drawings of the PHM Class; purpose of the article is to provide details to modellers of the PHM Class.

                                                                                                                                                                              We have a pretty good set of plans from “Floating Drydock” now. Floating Drydock is a Plan service company. They now have a couple different scale plan drawings and sets of PHMs: Hull, faired lines and stations USS PEGASUS Builders plans outboard profile and plan view, and deckhouse details, model builders set showing main deck, outboard profile bridge superstructure deck, platforms, some hull sections, general arrangements, and longitudinal cross section

                                                                                                                                                                              White Ensign Models (WEM) offers a new 1:350 scale model kit for PHM 1 USS PEGASUS, and it’s a beauty. Click Here for details/photo. The company ships orders worldwide. Felix Bustelo has created a webpage devoted to this model with photos, hints, and reviewer comments. That page is at http://warship.simplenet.com/wem_pegasus.htm. [regrettably, Felix Bustelo’s site seems to have disappeared from the web. – Editor] Thanks to Steve Novell (steve.novell@av.com) for bringing this item to our attention. He notes that “The model thing is close enough that you can make just minor adjustments (adding H bits to the main deck, relocating the radar to the mast etc.)””,”2005-06-11″,”Barney C Black”,”poopdeck”,” “,” “,”0”

                                                                                                                                                                              “14”,”843267″,”6″,”Re; Lines/Plans for PHM Pegasus?||843267″,”Boeing Aircraft of Seattle, Washington designed the PEGASUS Class PHMs.
                                                                                                                                                                              Jerry Grasmick
                                                                                                                                                                              MK 75 Gun System Engineer”,”2005-06-09″,”Jerry R. Grasmick, E.E.”,”nopswd”,” “,” “,”0”

                                                                                                                                                                              “15”,”842578″,”6″,”Lines/Plans for PHM Pegasus?||842578″,”Dear Sirs,

                                                                                                                                                                              I have recently built the Italian Hydrofoil Sparviero as none working
                                                                                                                                                                              modell in 1/72nd. (see picture following).

                                                                                                                                                                              (See attached file: Sparviero_frontsideview2.jpg)

                                                                                                                                                                              I´d like to build next the PHM Pegasus also as none working display modell
                                                                                                                                                                              scale 1/72nd.

                                                                                                                                                                              Do you know where to get accurate plans / drawings including line drawings
                                                                                                                                                                              of the hull?

                                                                                                                                                                              Best regards

                                                                                                                                                                              Markus Schott
                                                                                                                                                                              Germany”,”2005-06-08″,”Markus Schott”,”nopswd”,” “,”Markus.Schott@LBBW.de”,”0″

                                                                                                                                                                              “16”,”792473″,”6″,”TUCUMCARI||792473″,”Hello,

                                                                                                                                                                              For the past 26 years I have served as a project supervisor creating museum exhibits in honor of U.S. vets and those of our allies. Some of the venues I have done work for include the USS Intrepid Sea Air Space Museum and the Museum of Polish Military Heritage in America, both in New York City. Load my name Mike Dobrzelecki into a Google Search Engine and you’ll see examples of some of my work on two continents over the years.

                                                                                                                                                                              I saw your name & email on the IHS website and hope you can provide some help on a research project concerning the Tucumcari PGH-2.

                                                                                                                                                                              I built the old Aurora kit when it first came out in the late 1960’s early 1970’s (?) and not too long ago picked up a derelict unpainted damaged built-up, as well as a pristine complete kit still in the original box. I even still have some parts from my original build model.

                                                                                                                                                                              My intent is to build one ‘flying’ and one in the water with its struts and foils folded up and possibly write a good article on the Tucumcari.

                                                                                                                                                                              I have everything available on the internet for this fascinating hydrofoil, as well as, the old Sea Clasics issue with the Tucumcari on the cover. Recently, I obtained a copy of the History Channel Mail Call episode with the world’s most famous D.I. narrating exquisite video of the this fast-fighting boat in action – great footage, BTW. I have even manage to track down some of its crew for personal interviews. Most frustratingly, the crew I talked to so far all stated that their photos went missing during moves over the years.

                                                                                                                                                                              I am looking for more photos including details of the interior, the exterior fit on the cockpit/bridge and upper surface of the hull and an answer to what’s in the large opening aft of the .50 cals and masts/antennae. I would also like to track down some more crew and any other books or naval history magazine articles on the the Tucumcari. Any leads would be appreciated.

                                                                                                                                                                              Mike Dobrzelecki
                                                                                                                                                                              3040 Clayton Street
                                                                                                                                                                              Easton PA 18045
                                                                                                                                                                              “,”2005-03-07”,”Mike Dobrzelecki “,”members”,” “,”Michael_Dobrzelecki@fwc.com”,”0″

                                                                                                                                                                              “17”,”779659″,”6″,”Re: Aries project?||779659″,”I suggest you contact Eliot James directly via the website at http://www.ussaries.org/ for an answer. I don’t think he monitors this BBS, and so would not see your question. If you find out anything, please come back and post it so the rest of us can have the update!”,”2005-02-10″,”Barney C Black”,”poopdeck”,” “,”bcblack@erols.com”,”0″

                                                                                                                                                                              “18”,”776047″,”6″,”Aries project?||776047″,”Is the Aries project going forward? The last update I can find was Aug 03. If not is there anything we can do to help?”,”2005-02-04″,”Chuck Shannon”,”nopswd”,” “,”ChuckE68@aol.com”,”0″

                                                                                                                                                                              “19”,”770610″,”6″,”Refueling PEGASUS Pictures- 20 March 78||770610″,”Pete

                                                                                                                                                                              Attached as a Adobe pdf file are the PHM Pegasus refueling at sea pictures I mentioned from my first post.

                                                                                                                                                                              Jill Baron”,”2005-01-25″,” Jim Baron”,”foilsadm”,” “,” “,”0”

                                                                                                                                                                              “20”,”770511″,”6″,”vs8 pictures||770511″,”I am looking for any pictures of the vs8 particularly on the prop rudder area – I can not contact challenge publications to see if they had an old copy of the scale modeler magazine from july 82 which showed photos of the 32nd parallel kit”,”2005-01-25″,”David Short”,”nopswd”,” “,”davidsh@internode.on.net”,”0″

                                                                                                                                                                              “21”,”770150″,”6″,”Re: PHM Pegasus Refueling Pics 20 Mar 78||770150″,”Any possible way to send me Pegasus pix refueling as simple attachment? Cheers, Peter Squicciarini (p.s.>>>the bbs@foils.com is superb!)”,”2005-01-25″,”pdsquicciarini@msn.com”,”nopswd”,” “,”Pete Squicciarini”,”0″

                                                                                                                                                                              “22”,”769886″,”6″,”PHM Pegasus Refueling Pics 20 Mar 78||769886″,” I was onboard USS OGDEN from 1978-1980.

                                                                                                                                                                              Looking in my Westpac 78 Cruisebook – page 6 is titled “20 March – Refueling PEGASUS.”
                                                                                                                                                                              I remember the day well. Was the strangest looking boat I ever saw!

                                                                                                                                                                              Attached is the page from the 1978 cruisebook showing the refuleing operations.

                                                                                                                                                                              Thanks – Jim. Happy to scan and send – Jim Baron (JOCS(SW), USN Ret.)

                                                                                                                                                                              “,”2005-01-24″,” Jim Baron”,”members”,” “,” “,”0”

                                                                                                                                                                              “23”,”746897″,”6″,”HMCS Brasd’or||746897″,”Thanks for the interesting webpage. Our Powers to be are making me laugh right now but cutting our forces down again even further and complaining of costs to outfit our fight forces with descent equipment. I suggested to them that they reconsider this design and get rid of the destroyers that require a staff of 250+. This little baby with today’s technology would be awesome for coastal patrols, even on the great lakes and for rescue.

                                                                                                                                                                              Say what you want, I agree with your article, just like the Avro Arrow, that ship will still out do anything around today…. Thanks again.”,”2004-12-03″,”Walter Argent Jr.”,”nopswd”,” “,”wargent@msn.com”,”0″

                                                                                                                                                                              “24”,”706035″,”6″,”Re: EX PLAINVIEW CREWMEMBER||706035″,”Did not know if you saw this…

                                                                                                                                                                              http://www.foils.org/plainvw.htm”,”2004-09-09″,”Dan Schmidt”,”nopswd”,” “,”gse2schmidt@hotmail.com”,”0″

                                                                                                                                                                              “25”,”703662″,”6″,”EX PLAINVIEW CREWMEMBER||703662″,”Just happened to stumble across this site trying to explain a hydrofoil to a co-worker. Most of the messages are extremely old but I do recognize several names.—-o to Skipper Hudson, Mr Bender and Mick and Sumi. I was the last Ship’s Yeoman of the mighty Plainview and one of the last to walk ashore. Seeing how she ended up was sad and I’m sure by now that is has been scrapped. One thing I will always remember that I was able to numerous things outside my rating, i.e. radar, plotting, and taking those darn soundings at 2 in the morning. YNCM(SW) Dennis Clark, USN, RET”,”2004-09-02″,”Dennis Clark”,”guest”,” “,”denbon@honeywell.com”,”0″

                                                                                                                                                                               

                                                                                                                                                                               

                                                                                                                                                                              Archive; USN PHM Hydrofoil Missile Ships

                                                                                                                                                                              Click below to Open.

                                                                                                                                                                              http://www.foils.org/restore.htm
                                                                                                                                                                              [Date/Time=03-24-2002 – 1:51 AM]

                                                                                                                                                                                Name:webmaster@foils.org [Msgid=237503]
                                                                                                                                                                                Archive; Sources of US Navy Photos
                                                                                                                                                                                Click below to Open

                                                                                                                                                                                http://www.history.navy.mil/faqs/faq22-1.htm
                                                                                                                                                                                [Date/Time=03-24-2002 – 4:23 PM]

                                                                                                                                                                                  Name:webmaster@foils.org [Msgid=237702]
                                                                                                                                                                                  PHM Interior Paint Color

                                                                                                                                                                                    ViewThread

                                                                                                                                                                                        • I have read the foils.org web site with great interest and have seen the responses that ET1 Desendi (USS Aquilla) was saying about the interior color of the Aries. Being stationed aboard her and being the lowest ranking member of the Combat Systems department (FC2) I did my fair share of painting. The interior color of the Aries, at decommissioning, was a color that Cmdr. Nichols had the Boats especially mix up. Boats called it Ticonderoga grey. It was white with just a tinge of Haze Grey mixed in. It wasn’t a bad color actually. The mess deck had the Rams Head. I don’t recall what happened to it after we decommissioned. I have some pictures of the Aries that might be of some help if you have specific questions. I also have some pictures of the running aground in Corpus Christie.

                                                                                                                                                                                    [Date/Time=05-04-2002 – 8:16 AM]

                                                                                                                                                                                      Name:Victor (Flo) Nightingale Victor_Nightingale@gbophb.org, [Msgid=255273]
                                                                                                                                                                                      PHM Interior Paint Color

                                                                                                                                                                                          • Victor
                                                                                                                                                                                          • Thanks for your input to the PHM history.
                                                                                                                                                                                          • We would love to acquire any photos or other information you have that we can add to our PHM files, newsletter and our Photo Albums.
                                                                                                                                                                                          • Bill White

                                                                                                                                                                                      [Date/Time=05-04-2002 – 9:11 PM]

                                                                                                                                                                                        Name:Bill White Asst Webmaster whitewn@speakeasy.net, [Msgid=255475]
                                                                                                                                                                                        Veteran of PHM-3 and HIGH POINT

                                                                                                                                                                                          ViewThread

                                                                                                                                                                                              • I am a Plank Owner on the

                                                                                                                                                                                          USS TAURUS

                                                                                                                                                                                              • (PHM-3). I worked in the engineering department a GSM2. I also worked on the

                                                                                                                                                                                          USS HIGHPOINT

                                                                                                                                                                                              • (PCH-1) — Henry Jakobson GSCS(SW)Ret

                                                                                                                                                                                          [Date/Time=06-02-2002 – 2:14 PM]

                                                                                                                                                                                            Name:Henry Jakobson jakobson@bellsouth.net, [Msgid=266590]
                                                                                                                                                                                            Veteran of PHM-3 and HIGH POINT

                                                                                                                                                                                                • Have you visited the foils.org/restore.htm part of the site? PHM-5 lives on PHM-3,4,6 hang in the balance…

                                                                                                                                                                                            [Date/Time=06-03-2002 – 10:36 PM]

                                                                                                                                                                                              Name:Dan Schmidt GSE2Schmidt@hotmail.com, [Msgid=267169]
                                                                                                                                                                                              Former Hydrofoiler

                                                                                                                                                                                                  • I just found this website so I haven’t had the opportunity to brouse through all of it. I’m pleased to see there are other “hydrofoil” sailors out there that were as proud to serve as I was. I had the pleasure of being one of the last crewmembers of the Boeing built Tucumcari PGH-2 which was assigned to the Little Creek Naval Amphibias base in Norfolk, VA. (We found out how hard a coral reef can be at 40 knots when operating down near Puerto Rico.) I was then assigned to be a member of the first crew of Pegasus PHM-1 and had the pleasure of being there to see it launched at the Boeing Plant in Renton, WA. What great duty! Thanks for the memories!!

                                                                                                                                                                                              [Date/Time=06-14-2002 – 3:37 PM]

                                                                                                                                                                                                Name:Fred Wieber fwieber@ionia-mi.net, [Msgid=271733]
                                                                                                                                                                                                High Speed Hydrofoil Assault Craft

                                                                                                                                                                                                  ViewThread

                                                                                                                                                                                                      • Need investors to back a project to design, build and present to the USN Special Warfare Group as an Unsolicited Proposal for a hydrofoil vessel that could deliver a Seal Team to the battle without breaking their bones or getting them deathly ill. Just attended the MACC, (Multi Agency Craft Conference at Little Creek. The timing is right. There were fast boats presented. None could perform their mission in anything other than a flat, calm sea. I am available to contribute my 10 years of hydrofoil experience through my company, American Marine Consultants, LLC
                                                                                                                                                                                                      • Ken Plyler, ENCM USN Ret.

                                                                                                                                                                                                  [Date/Time=06-20-2002 – 7:32 PM]

                                                                                                                                                                                                    Name:Kenneth F. Plyler kfppfk@aol.com, [Msgid=273911]
                                                                                                                                                                                                    High Speed Hydrofoil Assault Craft

                                                                                                                                                                                                        • MASTER CHIEF,
                                                                                                                                                                                                        • WASN’T THE WHOLE REASON BEHIND THE “PC” CLASS PROGRAM, LITTORAL WATERS BATTLE AND SEAL TEAM DELIVERY ?
                                                                                                                                                                                                        • THE PHM COULD DELIVER A SEAL TEAM IN LITTORALS AND IN ANY SEA STATE, OH, BUT THEY WERE TOO EXPENSIVE.
                                                                                                                                                                                                        • ROB DeSENDI, USS AQUILA PHM-4

                                                                                                                                                                                                    [Date/Time=07-15-2002 – 12:31 PM]

                                                                                                                                                                                                      Name:ROB DESENDI rdesendi@nsmayport.spear.navy.mil, [Msgid=282611]
                                                                                                                                                                                                      High Speed Hydrofoil Assault Craft

                                                                                                                                                                                                          • Master Chief,
                                                                                                                                                                                                          • I agree with Rob. I was onboard USS Gemini PHM-6. We were fast on the foils and did some test with SEAL Teams. The problems were encountered because we had to go “hullborne” vice “foilborne” to insert the teams. When hullborne, the seas rocked us around pretty good. Not much different than the current PC’s.

                                                                                                                                                                                                      [Date/Time=07-15-2002 – 1:03 PM]

                                                                                                                                                                                                        Name:ITC(SW) Rich Powell rpowe, [Msgid=282632]
                                                                                                                                                                                                        High Speed Hydrofoil Assault Craft

                                                                                                                                                                                                            • Master Chief,
                                                                                                                                                                                                            • I agree with Rob. I was onboard USS Gemini PHM-6. We were fast on the foils and did some test with SEAL Teams. The problems were encountered because we had to go “hullborne” vice “foilborne” to insert the teams. When hullborne, the seas rocked us around pretty good. Not much different than the current PC’s.

                                                                                                                                                                                                        [Date/Time=07-15-2002 – 1:04 PM]

                                                                                                                                                                                                          Name:ITC(SW) Rich Powell rpowe, [Msgid=282634]
                                                                                                                                                                                                          High Speed Hydrofoil Assault Craft

                                                                                                                                                                                                              • My two cents. I was a Naval Architect at the David Taylor Model Basin supporting the PHMS back in those days and my memory matches yours exactly.
                                                                                                                                                                                                              • A few years later in the mid 80s, I had the good fortune along with Cdr Dave Patch to work with the French Navy in Toulon Fr.
                                                                                                                                                                                                              • They showed us a Catamaran Hydrofoil design that they had experimented with that would be perfect for todays missions. The catamaran hull shape gave twice the volume inside as the PHMs on an equivalent length hull. This Catamaran Hydrofoil had a nice wide stern for carrying and launching RIBS etc. In addition, the craft was much more stable hullborne do to the wide beam and also could do 20+ kts hullborne with the foils up. The Foils were mounted in the four catamaran corners at the bow and stern. They could be raised and lowered vertically to dramatically reduce hullborne draft. I don’t remember if the height could be changed while they were foilborne for shallow water ops. With todays sophisticated control systems such a four foil system could be used while hullborne to reduce pitch and roll motions as well as when foilborne.
                                                                                                                                                                                                              • Other than possibly a Surface Effect Craft, nothing comes close in terms of performance (Speed, Maneuverability and Sea state) flexibility, Deck area and internal volume based on all my knowledge.
                                                                                                                                                                                                              • Most all the competion such as long slender hulls, Trimarans, Catamarans and other more exotic variants fail in one or the other military attributes. The problem is that none of the promotors ever let a one on one comparative analysis occur.
                                                                                                                                                                                                              • Even the US Navy’s own comparisons over the years have been no better. Though often the reason is a lack of knowledge rather than any particular bias of the participants. For an example, I can remember for years trying to convince people that just because the PHM was designed for under 10 kt hullborne on Diesels that there was no physical reason that said it had to be a true limitaion for all future Hydrofoils. And yet to this today a lot of people think that 20 kts is a very inefficient Hydrofoil speed. And this automatically eliminates them from consideration, since the Navy often cruises at that speed.
                                                                                                                                                                                                              • Anyway, Rob Best of luck. Wish I had the $ to help.
                                                                                                                                                                                                              • Bill White

                                                                                                                                                                                                          [Date/Time=07-15-2002 – 2:24 PM]

                                                                                                                                                                                                            Name:Bill White whitewn@speakeasy.net, [Msgid=282664]
                                                                                                                                                                                                            High Speed Hydrofoil Assault Craft

                                                                                                                                                                                                                • I think the issue would be the transition and noise factor, we were quiet till we got near someone with the FB engine but need an easy trans from H/b to F/b and a way to easily retract to give low draft!

                                                                                                                                                                                                            [Date/Time=07-16-2002 – 6:14 PM]

                                                                                                                                                                                                              Name:Mike Boyle EN1 USS Aquila mdboyle2@cox.net, [Msgid=283203]
                                                                                                                                                                                                              High Speed Hydrofoil Assault Craft

                                                                                                                                                                                                                  • Mike
                                                                                                                                                                                                                  • You make two good points.
                                                                                                                                                                                                                  • We tried underwater exhausts, for awhile. They worked, but reduced engine life due to increased back pressure.
                                                                                                                                                                                                                  • Bill White

                                                                                                                                                                                                              [Date/Time=07-16-2002 – 7:01 PM]

                                                                                                                                                                                                                Name:Bill White whitewn@speakeasy.net, [Msgid=283226]
                                                                                                                                                                                                                High Speed Hydrofoil Assault Craft

                                                                                                                                                                                                                    • I had no experience with the PHM. I do rememer the original PHM-2. It was never built. When the FRG, (Federal Republic of Germany). pulled out of the program, PHM-2 was cancelled and the whole program was put on the back burner. Our PHM fleet consisted of Pegasus PHM-1. The pile of aluminum that was to be PHM-2 was sold for scrap, as I remember.

                                                                                                                                                                                                                [Date/Time=07-17-2002 – 7:19 AM]

                                                                                                                                                                                                                  Name:Ken Plyler kfppfk@aol.com, [Msgid=283386]
                                                                                                                                                                                                                  High Speed Hydrofoil Assault Craft

                                                                                                                                                                                                                      • Actually, Ken, PHM-2 was eventually completed, delivering in about 1983, as I recall. We also built PHM-3,-4,-5 and -6 and operated the six ships out of Key West until their decommissioning in 1993.
                                                                                                                                                                                                                      • PHM-2 was actually the last PHM to deliver. For details on that strange arrangement and a summary of the whole six-ship program check out my article on the history of the PHM program on the main IHS website, at

                                                                                                                                                                                                                  http://www.foils.org/phmhist.pdf

                                                                                                                                                                                                                      • .
                                                                                                                                                                                                                      • You are right in saying that PHM-2’s construction was back-burnered for a while. But the “pile of aluminum that was to be PHM-2” was not sold for scrap. It was actually used (quietly) as a spare parts locker for PHM-1 until construction started up on PHM-2 again.
                                                                                                                                                                                                                      • All the best,
                                                                                                                                                                                                                      • George

                                                                                                                                                                                                                  [Date/Time=07-17-2002 – 10:55 AM]

                                                                                                                                                                                                                    Name:George Jenkins Georgejj@aol.com, [Msgid=283458]
                                                                                                                                                                                                                    High Speed Hydrofoil Assault Craft

                                                                                                                                                                                                                        • George, it appears that you have done your homework. Anyone interested in the real PHM story should, by all means, read your PHM History. WOW! I was glued to the article. Thanks.
                                                                                                                                                                                                                        • Ken Plyler

                                                                                                                                                                                                                    [Date/Time=07-17-2002 – 12:26 PM]

                                                                                                                                                                                                                      Name:Ken Plyler kfppfk@aol.com, [Msgid=283501]

                                                                                                                                                                                                                          • Thank you, Ken — glad you enjoyed the article. Good luck on your High Speed Assault Craft —
                                                                                                                                                                                                                          • George

                                                                                                                                                                                                                      [Date/Time=07-17-2002 – 12:55 PM]

                                                                                                                                                                                                                        Name:George Jenkins Georgejj@aol.com, [Msgid=283517]
                                                                                                                                                                                                                        HIGH POINT Update

                                                                                                                                                                                                                          ViewThread

                                                                                                                                                                                                                              • I just found out the web site is down or gone I’ll figure that out. I’ve been working on the electrical systems, what a mess, as I have
                                                                                                                                                                                                                              • no intention of replacing the military electronics or the monitoring systems for test purposes that were originally on board. Just figuring out what is needed and what is not is a pretty good size job. Most of my time hasn’t been spent working on the boat; due to other projects so my time is very thin right now. I’ll see what I
                                                                                                                                                                                                                              • can do to get the web site located or back up or whatever is wrong there and let you know.

                                                                                                                                                                                                                          [Date/Time=08-25-2002 – 7:35 PM]

                                                                                                                                                                                                                            Name:Bob Phillips rpstander@bigplanet.com, [Msgid=300986]
                                                                                                                                                                                                                            HIGH POINT Update

                                                                                                                                                                                                                                • Let me know if I can assist you with your website. I have worked with Mr. Barney Black.
                                                                                                                                                                                                                                • Regards.
                                                                                                                                                                                                                                • Vladimir Algin

                                                                                                                                                                                                                            [Date/Time=08-26-2002 – 3:27 AM]

                                                                                                                                                                                                                              Name:Vladimir Algin valgin@ltsu.net, [Msgid=301121]
                                                                                                                                                                                                                              Vietnam LPH-5 Info Needed

                                                                                                                                                                                                                                  • Do you know anything about the USS Princeton LPH-5 in the area of VietNam 1961-62-63-64? Please contact me…

                                                                                                                                                                                                                              [Date/Time=09-07-2002 – 6:31 AM]

                                                                                                                                                                                                                                Name:Mike Mikemarine4@aol.com, [Msgid=306491]
                                                                                                                                                                                                                                Tested HIGH POCKETS

                                                                                                                                                                                                                                    • I was on the crew that tested

                                                                                                                                                                                                                                HIGH POCKETS

                                                                                                                                                                                                                                    • at Little Creek in the 1950s. It was pretty basic at that time and had to be adjusted by hand-cranking a series of small wheels that were mounted across the cockpit. It was fast but not too stable. I can’t remember who was on the crew with me, but the ride was exciting. I remember we took a trip to Patuxent Naval Air sta. on the 63 ft. Avr’s and shortly thereafter

                                                                                                                                                                                                                                HIGH POCKETS

                                                                                                                                                                                                                                    • arrived at our base at Little Creek. We took her out in the bay just outside the jetty and opened her up. I don’t think I ever envisioned going that fast over water? “wow” she was fast! We hit a paper bag, and the foil on the starboard side got out of trim. The boat dug in and popped back like a cork. We got thrown around but no injuries, so we continued the run. It was a blast. I believe we had it on operations at Moorhead City also, although I don’t remember just how it was used there. This picture was included in an article I wrote for the Blast Magazine, October 2001 edition.


                                                                                                                                                                                                                                [Date/Time=09-14-2002 – 8:22 PM]

                                                                                                                                                                                                                                  Name:Jake McAndrew PLIERS2222@aol.com, [Msgid=309794]
                                                                                                                                                                                                                                  Pictures if you need them

                                                                                                                                                                                                                                    ViewThread

                                                                                                                                                                                                                                        • Hello, this is GSCS Brian Markey, I was stationed on USS GEMINI (PHM-6) from 89-92. I have pictures of the foils with the Coast Guard and the LCAC’s. I remember those crafts well. They did a hell of a job and it was a shame that they were retired. If you need any information on the SSPU’s or the LM 2500, let me know.

                                                                                                                                                                                                                                    [Date/Time=11-07-2002 – 7:34 PM]

                                                                                                                                                                                                                                      Name:Brian Markey bfm@carney.navy.mil, [Msgid=335073]
                                                                                                                                                                                                                                      Pictures if you need them

                                                                                                                                                                                                                                          • Senior,
                                                                                                                                                                                                                                          • I am in the process of putting together a short presentation on PHMs for the American Society of Naval Engineers. I would very much like to include some of your pictures of PHMs with the USCG, if they can be sent to me electronically. My email address is

                                                                                                                                                                                                                                      georgejj@aol.com

                                                                                                                                                                                                                                          • .
                                                                                                                                                                                                                                          • Thanks!
                                                                                                                                                                                                                                          • George Jenkins

                                                                                                                                                                                                                                      [Date/Time=11-08-2002 – 9:37 AM]

                                                                                                                                                                                                                                        Name:George Jenkins georgejj@aol.com, [Msgid=335242]
                                                                                                                                                                                                                                        Pictures if you need them

                                                                                                                                                                                                                                            • Senior,
                                                                                                                                                                                                                                            • I am in the process of putting together a short presentation on PHMs for the American Society of Naval Engineers. I would very much like to include some of your pictures of PHMs with the USCG, if they can be sent to me electronically. My email address is

                                                                                                                                                                                                                                        georgejj@aol.com

                                                                                                                                                                                                                                            • .
                                                                                                                                                                                                                                            • Thanks!
                                                                                                                                                                                                                                            • George Jenkins

                                                                                                                                                                                                                                        [Date/Time=11-08-2002 – 9:37 AM]

                                                                                                                                                                                                                                          Name:George Jenkins georgejj@aol.com, [Msgid=335243]
                                                                                                                                                                                                                                          Pictures if you need them

                                                                                                                                                                                                                                              • Found an GE YTF-39(experimental TF-39) on E-Bay

                                                                                                                                                                                                                                          http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1872694883

                                                                                                                                                                                                                                              • Might be possibility for engine on PHM5 restoration. Take a look at the pictures. Especially the oil system and fuel manifold. Tell me what you think.

                                                                                                                                                                                                                                          [Date/Time=11-23-2002 – 10:48 AM]

                                                                                                                                                                                                                                            Name:Dan Schmidt gse2schmidt@hotmail.com, [Msgid=342359]
                                                                                                                                                                                                                                            Attached File  “i-4_B_L~jpg.zip” – size 72081   Click Here To Download
                                                                                                                                                                                                                                            Replacement GTE for PHM-5

                                                                                                                                                                                                                                                • Thanks, Dan, I will pass this on to Eliot James to make sure they see it immediately for PHM-5

                                                                                                                                                                                                                                            [Date/Time=11-24-2002 – 8:43 AM]

                                                                                                                                                                                                                                              Name:Barney C Black webmaster@foils.org, [Msgid=342701]
                                                                                                                                                                                                                                              USS Plainview (AGEH-1)

                                                                                                                                                                                                                                                ViewThread

                                                                                                                                                                                                                                                    • re: USS Plainview (AGEH-1) in the mid to late 1970’s
                                                                                                                                                                                                                                                    • Wondering if anyone knows what ever happened to:
                                                                                                                                                                                                                                                    • (1) Sib Lebeau, the Puget Sound Naval Shipyard Pipefitter Foreman assigned to assist HYSTU and the Plainview during the overhaul / conversion that finally fixed the hydraulic system problems?
                                                                                                                                                                                                                                                    • (2) MS1 John DeRosa the Plainview’s cook?

                                                                                                                                                                                                                                                [Date/Time=11-26-2002 – 7:35 AM]

                                                                                                                                                                                                                                                  Name:Greg Bender glbender@erols.com, [Msgid=343547]
                                                                                                                                                                                                                                                  USS Plainview (AGEH-1)

                                                                                                                                                                                                                                                      • Hi Greg,
                                                                                                                                                                                                                                                      • Sib lost his eye sight and retired from PSNS. He died a few years after retirement.
                                                                                                                                                                                                                                                      • Sumi

                                                                                                                                                                                                                                                  [Date/Time=11-27-2002 – 3:38 PM]

                                                                                                                                                                                                                                                    Name:S. Arima arimas1@juno.com, [Msgid=344267]
                                                                                                                                                                                                                                                    Pictures if you need them

                                                                                                                                                                                                                                                        • Dan,
                                                                                                                                                                                                                                                        • —-o this is GSCS Brian Markey, I was on the USS GEMIN PHM 6 for 3 years. I am presently on the USS Carney DDG 64. The engine that you found looks fine. The egg oil system looks about right but it was mounted on the opposite side on the module wall. They might need more piping to accomodate this as an install. The fuel manifold looks fine from what I can tell in the picture.
                                                                                                                                                                                                                                                        • Respectfully,
                                                                                                                                                                                                                                                        • GSCS Brian Markey

                                                                                                                                                                                                                                                    [Date/Time=12-02-2002 – 3:25 PM]

                                                                                                                                                                                                                                                      Name:Brian Markey bfm@carney.navy.mil, [Msgid=345791]
                                                                                                                                                                                                                                                      HIGH POINT or HIGHPOINT

                                                                                                                                                                                                                                                        ViewThread

                                                                                                                                                                                                                                                            • Is the correct name of PCH-1

                                                                                                                                                                                                                                                        HIGH POINT

                                                                                                                                                                                                                                                            • (two words) or

                                                                                                                                                                                                                                                        HIGHPOINT

                                                                                                                                                                                                                                                            • (one word)? The IHS newsletter is not consistent on this.

                                                                                                                                                                                                                                                        [Date/Time=12-30-2002 – 8:20 AM]

                                                                                                                                                                                                                                                          Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=356665]
                                                                                                                                                                                                                                                          Re; HIGH POINT or HIGHPOINT

                                                                                                                                                                                                                                                              • High Point (PCH-1) is named for the city of High Point North Carolina and is two words. I retired from High Point in 1965 and recently donaterd to the city my plaque pictures etc. Dale K. Beresford, QMc, USN (ret)

                                                                                                                                                                                                                                                          [Date/Time=12-31-2002 – 2:57 PM]

                                                                                                                                                                                                                                                            Name:Dale Beresford dalkar1@msn.com, [Msgid=357211]
                                                                                                                                                                                                                                                            PEGASUS Crew During Development

                                                                                                                                                                                                                                                              ViewThread

                                                                                                                                                                                                                                                                  • I was wondering if you have or know someone who could provide me a crew list for the PHM-1 PEGASUS. My father Robert Sobota was a crew member during testing and development. Any information would help.

                                                                                                                                                                                                                                                              [Date/Time=01-29-2003 – 9:40 PM]

                                                                                                                                                                                                                                                                Name:Jamie E. Sobota Jamie.Sobota@edwards.af.mil, [Msgid=369328]
                                                                                                                                                                                                                                                                Re; PEGASUS Crew During Development

                                                                                                                                                                                                                                                                    • You should take a look at the correspondence on our page at

                                                                                                                                                                                                                                                                http://www.foils.org/restore.htm

                                                                                                                                                                                                                                                                    • and see if there are any individuals there that you could contact directly for information based on what they said in their posting. Also, you might be interested in the following unfortunate notice from our announcements page:
                                                                                                                                                                                                                                                                    • [22 Dec 02] It is with regret that IHS reports the death of CDR Erich H. Ashburn, USN [Ret]. CDR Ashburn was OINC of PEGASUS throughout the Operational Evaluation (OPEVAL) process.

                                                                                                                                                                                                                                                                [Date/Time=01-29-2003 – 9:42 PM]

                                                                                                                                                                                                                                                                  Name:Barney C Black webmaster@foils.org, [Msgid=369330]
                                                                                                                                                                                                                                                                  Want a ride on Hydrofoil

                                                                                                                                                                                                                                                                      • I have been studying HYDROFOIL designs, and think I have “nailed” it. Now need to ride on someone’s craft. I live in South Florida but am willing to go anywhere in NA for an extended ride. Any one have an operating Hydrofoil Boat who can accomodate my request?

                                                                                                                                                                                                                                                                  [Date/Time=06-03-2003 – 7:31 AM]

                                                                                                                                                                                                                                                                    Name:Gerry Levine gerrymega@adelphia.net, [Msgid=446221]
                                                                                                                                                                                                                                                                    Model of the VS-8( schell-1 )

                                                                                                                                                                                                                                                                        • New compamy with RC model of the Schell-1 hydrofoil!!
                                                                                                                                                                                                                                                                        • Als know as the VS-8!!
                                                                                                                                                                                                                                                                        • Look at:

                                                                                                                                                                                                                                                                    http://www.harhaus.de/neuheiten2003.htm

                                                                                                                                                                                                                                                                        • Good luck modelers!!

                                                                                                                                                                                                                                                                    [Date/Time=06-04-2003 – 6:16 AM]

                                                                                                                                                                                                                                                                      Name:Capt M van Rijzen dutchhydrofoils@wanadoo.nl, [Msgid=446821]
                                                                                                                                                                                                                                                                      Attached File  “schell05~jpg.zip” – size 50254   Click Here To Download
                                                                                                                                                                                                                                                                      USS Pegasus

                                                                                                                                                                                                                                                                          • Goto

                                                                                                                                                                                                                                                                      www.classmates.com

                                                                                                                                                                                                                                                                          • , you will find anumber of the old gang from various years listed under USS Pegasus

                                                                                                                                                                                                                                                                      [Date/Time=06-16-2003 – 4:35 AM]

                                                                                                                                                                                                                                                                        Name:steve novell (Jolly-OS1, PHM1) sjnovell@mindspring.com, [Msgid=453349]
                                                                                                                                                                                                                                                                        PHMRON 2 Veterans

                                                                                                                                                                                                                                                                            • This July 30th will be the 10th anniversary of the PHM squadron decommissioning. I wish to extend all best wishes to our shipmates, the veterans of the PHM crews, MLSG and PHM Squadron 2 staff. I look forward to raising a glass (splice the main brace)at Turtle Krawls in Key West on this date, to you all.

                                                                                                                                                                                                                                                                        [Date/Time=06-16-2003 – 4:59 AM]

                                                                                                                                                                                                                                                                          Name:steve novell (Jolly-OS1, PHM1) sjnovell@mindspring.com, [Msgid=453351]
                                                                                                                                                                                                                                                                          Titan Aluminum X-Craft Experiment

                                                                                                                                                                                                                                                                            ViewThread

                                                                                                                                                                                                                                                                                • According to a July 11, 2003 article in

                                                                                                                                                                                                                                                                            Financial Times Limited

                                                                                                                                                                                                                                                                                • , which was sent in by IHS member Nat Kobitz, Titan Corp is the US Navy’s Office of Naval Research (ONR) prime contractor in a USD 59.9m project to produce an all aluminum, 73 m catamaran X-Craft as a test platform. The vessel will be constructed by Nichols Brothers Boat Builders of Washington state. According to the article, the X-Craft will be “capable of making 50 knots at its full 1,100-ton displacement” and “will be capable of carrying its own weight in payload.” The article goes on to state that “The design philosophy is based on the requirement to carry heavy modular payloads,” and fuel for “a range of 4,000 nautical miles.”

                                                                                                                                                                                                                                                                            [Date/Time=07-25-2003 – 7:28 PM]

                                                                                                                                                                                                                                                                              Name:Barney C Black webmaster@foils.org, [Msgid=476274]
                                                                                                                                                                                                                                                                              Re; Titan Aluminum X-Craft Experiment

                                                                                                                                                                                                                                                                                  • I hope there is no expectation within ONR that the 50 knots speed AND
                                                                                                                                                                                                                                                                                  • 4000 nautical mile range will be achieved at the same time, not unless
                                                                                                                                                                                                                                                                                  • the payload is Helium!?

                                                                                                                                                                                                                                                                              [Date/Time=07-25-2003 – 7:30 PM]

                                                                                                                                                                                                                                                                                Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=476278]
                                                                                                                                                                                                                                                                                Re; Titan Aluminum X-Craft Experiment

                                                                                                                                                                                                                                                                                    • I’m fairly certain that the 4,000 n miles is at 20 knots or less. The only way you can make the 4,000 miles at about 30 knots in a small ship with a 10 to 20% payload, is with HYSWAS (esecially in any kind of a sea state). I believe MAPC’s 2200 ton HYSWAS design shows this.

                                                                                                                                                                                                                                                                                [Date/Time=07-25-2003 – 7:35 PM]

                                                                                                                                                                                                                                                                                  Name:John Meyer editor@foils.org, [Msgid=476280]
                                                                                                                                                                                                                                                                                  Re; Titan Aluminum X-Craft Experiment

                                                                                                                                                                                                                                                                                    ViewThread

                                                                                                                                                                                                                                                                                        • The HIGH L/B SES we developed after the 3Kses program in the mid 1980s (such as the Medium Dispacement Combatant MDC) came very close to this. I have studies and Model tests getting 4000 nm at 1100lt FLD at an average speed of 50 kts with two LM2500 GT or four Allison 571 GTs. This design was equipped for full ASW with LAMPS helos with hangar and Sonar system as well as Harpoon missiles. We were getting 5-6000 nm at 20 knots.
                                                                                                                                                                                                                                                                                        • It is doable at 1500lt as reports show. High L/B SES with proper attention to structure limits, respond very favorably to overloading with extra fuel that usually fits easily in the sidehulls.
                                                                                                                                                                                                                                                                                        • The SES 200 was modified and tested a couple of times to verify the MDC design numbers very successfully.

                                                                                                                                                                                                                                                                                    [Date/Time=07-25-2003 – 7:40 PM]

                                                                                                                                                                                                                                                                                      Name:Bill White Whitewn@speakeasy.net, [Msgid=476282]
                                                                                                                                                                                                                                                                                      re; Titan Aluminum X-Craft Experiment

                                                                                                                                                                                                                                                                                          • I’m sure that the selection of an SES (Raytheon-Umoe team) as one of the three LCS concepts chosen for further developement had something to do with the speed/range and draft requirements/objectives. The next phase should be interesting since it is highly likely that the other two concepts will incorporate dynamically assisted lifting technology – foils and/or lifting bodies – to try and meet the same overall performance objectives.

                                                                                                                                                                                                                                                                                      [Date/Time=07-28-2003 – 2:47 PM]

                                                                                                                                                                                                                                                                                        Name:Bill McFann bmcfann@islandengineering.com, [Msgid=477526]
                                                                                                                                                                                                                                                                                        Re; Titan Aluminum X-Craft Experiment

                                                                                                                                                                                                                                                                                            • Hi, Where can I pick up this article? Thanks Vincent

                                                                                                                                                                                                                                                                                        [Date/Time=07-30-2003 – 3:49 AM]

                                                                                                                                                                                                                                                                                          Name:vincent browne vincent_himself@hotmail.com, [Msgid=478643]
                                                                                                                                                                                                                                                                                          SIZING PROCEDURE OF HYDROFOIL SHIP

                                                                                                                                                                                                                                                                                            ViewThread

                                                                                                                                                                                                                                                                                                • Dear readers, I am doing my project on hydrofoil ship and really got stuck up in sizing of hydrofoil ship. Basically the hull. Please can somebody help me with it. If I can get a flow chart it would be wonderful, is it same as displacement ships, its really urgent so reply as soon as possible, you can also contact me at

                                                                                                                                                                                                                                                                                            shankar_navy@yahoo.com

                                                                                                                                                                                                                                                                                                • thank you.

                                                                                                                                                                                                                                                                                            [Date/Time=08-04-2003 – 11:59 PM]

                                                                                                                                                                                                                                                                                              Name:Shankar shankar_navy@yahoo.com, [Msgid=481857]
                                                                                                                                                                                                                                                                                              Re; SIZING PROCEDURE OF HYDROFOIL SHIP

                                                                                                                                                                                                                                                                                                  • Shankar,
                                                                                                                                                                                                                                                                                                  • It would be hard to describe the sizing / design process for a hydrofoil boat via correspondence on a bulletin board as a lot of parameters would be involved. Al the same, it would be helpful to anyone who may be able to reply if you provided more specific details about your project and identify particular areas of the design you need assistance with. For example, what speed, payload, range etc do you require for the project? Is it a passenger ferry or a military patrol craft? etc.
                                                                                                                                                                                                                                                                                                  • The process of sizing a hydrofoil is similar to a displacement ship. When a hydrofoil is hullborne, the hull displacement has to equal the weight of the ship and its load. When foilborne, the hydrofoils instead have to carry the weight of the ship. The performance of hydrofoil vessels is fairly sensitive to weight, so an accurate weight estimate is essential, and means of keeping weight to a minimum are very desirable.
                                                                                                                                                                                                                                                                                                  • Usually, the best starting point for a ship design process is to work from a design that already exists and is known to work well. This is often referred to as the “basis ship”. You can do the same for a hydrofoil. For example, if you wanted to develop a design for a 40 knot 250 passenger hydrofoil with a range of 200 nautical miles, you could get a copy of “Jane’s High-Speed Marine Transportation” and look through that until you found a hydrofoil with similar performance. For this example, the Rodriquez Foilmaster at 38 knots and seating 240 passengers would be a close match. To get the two knots extra speed, you now have to bump up the installed engine power from the 2x 2000 kW Diesels that are fitted to the “basis ship”. You also have to increase the passenger deck area a little to accommodate 10 extra passengers and so on. At least you have a starting point in terms of the overall dimensions and arrangement from which you can make changes as you find are necessary. Starting with a clean sheet of paper is far more difficult and means you will need to go around the “design spiral” far more times until you converge on a design that meets the requirements you set for it.
                                                                                                                                                                                                                                                                                                  • The nearest I can think of to a flow chart for a hydrofoil design process would be the code that is embedded in the “HANDE” program for development of hydrofoil concept designs which had been prepared by the US Defense Department. There is newer code than “HANDE” available now, but it wouldn’t be readily available. Some papers have been written about “HANDE” and how it works, but I guess you are not in the business of trying to re-write such a program in time to support your project?!
                                                                                                                                                                                                                                                                                                  • Good luck with the project.

                                                                                                                                                                                                                                                                                              [Date/Time=08-05-2003 – 8:49 AM]

                                                                                                                                                                                                                                                                                                Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=481992]
                                                                                                                                                                                                                                                                                                Sizing of Hydrofoil

                                                                                                                                                                                                                                                                                                  ViewThread

                                                                                                                                                                                                                                                                                                      • Actually I am doing my project in Hydrofoil Missile craft, I am at present stuck on the initial sizing of the hydrofoil craft. I would be really greatful if you can provide information on the weights of different weight groups of already built or designed hydrofoil crafts. The details of my project are
                                                                                                                                                                                                                                                                                                      • displacement : 250 t
                                                                                                                                                                                                                                                                                                      • max speed : 55 knots
                                                                                                                                                                                                                                                                                                      • endurance : 600 knotical miles in foil borne mode

                                                                                                                                                                                                                                                                                                  [Date/Time=08-08-2003 – 5:05 PM]

                                                                                                                                                                                                                                                                                                    Name:Shankar Swaminathan shankar_navy@yahoo.com, [Msgid=484412]
                                                                                                                                                                                                                                                                                                    Re; Sizing of Hydrofoil

                                                                                                                                                                                                                                                                                                        • The particulars of your hydrofoil are not very different to the Patrol Hydrofoil Missile (PHM) once operated by the US Navy. >From the 1978 issue of Jane’s Surface Skimmers, the following information is given regarding the PHM:
                                                                                                                                                                                                                                                                                                        • Full Load Displacement = 235 tonnes
                                                                                                                                                                                                                                                                                                        • Foilborne Range = in excess of 500 Nautical Miles
                                                                                                                                                                                                                                                                                                        • Speed = in excess of 40 knots in 8-12 ft seas.
                                                                                                                                                                                                                                                                                                        • More information about the PHM can be found in early copies of Jane’s Surface Skimmers which should be available in your library. Some details of the PHM are also contained on the IHS website.
                                                                                                                                                                                                                                                                                                        • As I have never designed a hydrofoil myself, I don’t have any weight breakdown for such a craft or anything similar. It is possible that there is some information about weight breakdowns for hydrofoils in the February 1985 issue of Naval Engineers Journal (see details below) which covered the features of hydrofoils in quite good detail, including design and production of the PHM. Perhaps you can obtain a copy of that Journal at your library? I don’t have it myself. To re-scale any weight data you find from one size of hydrofoil to another, I could suggest you use “Fundamentals of Naval Surface Ship Weight Estimating”, a technical paper which was also once published in a copy of Naval Engineers Journal. Unfortunately, I don’t know the names of the authors of that paper or which issue of the Journal that it appeared in.
                                                                                                                                                                                                                                                                                                        • Naval Engineers Journal, Volume 97, Number 2, February 1985. ISSN 0028-1425. Published by the American Society of Naval Engineers, Inc. (ASNE). This special edition features comprehensive reviews of a range of ‘advanced naval vehicles’, including hydrofoils, Surface Effect Ships (SES), Wing-in-Ground Effect (WIG) craft, Air Cushion Vehicles (ACV), Small Waterplane Area Twin Hulls (SWATH), planing hulls, and modern monohulls. This is an ideal source of background information in considering the merits of different craft types for particular roles.
                                                                                                                                                                                                                                                                                                        • Regarding design flow charts in your follow up message, I am sorry I do not have any such charts myself.

                                                                                                                                                                                                                                                                                                    [Date/Time=08-08-2003 – 5:07 PM]

                                                                                                                                                                                                                                                                                                      Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=484414]
                                                                                                                                                                                                                                                                                                      historical justification

                                                                                                                                                                                                                                                                                                          • Try connecting with boeing and their work on the Highpoint and the continued evolution the Tarus class represent. Also research the very active role the PHM’s had during the Hatian/Cuban boat people crisis. The exploits of the PHMs during the war on drugs until they were decommisioned. Don’t forget the role of coastal patrol around Grenada. Request deck logs from the Naval Arcives under the freedom of information act and you should be able to get enough information from these areas. Uther items of interest are the innovative use of electronic charts introduced with HYCATS. This is probably the precursor to the current use of digital charts on most commercial and military vessals in the US.

                                                                                                                                                                                                                                                                                                      [Date/Time=08-12-2003 – 2:34 AM]

                                                                                                                                                                                                                                                                                                        Name:Brian Stone stoneb001@hawaii.rr.com, [Msgid=486298]
                                                                                                                                                                                                                                                                                                        PHM-3 USS TAURUS

                                                                                                                                                                                                                                                                                                          ViewThread

                                                                                                                                                                                                                                                                                                              • The PHM’s were a proud and unusually tight-knit community of sailors. They were excellent ships, killed before their time by a short-sighted Navy bureaucracy. I was privileged to serve as XO of PHM-3, and think back on those days with great pride. USS TAURUS was a great ship, with a fantastic crew, and an enviable operational record. She was the best of the lot, more reliable than most and often called upon to pick up commitments missed by broken siblings. No brag, just fact. From 1988-1990, she busted a lot of dope, and quickly saved the five survivors of a USCS helicopter crash in bad weather at night during a high-speed pursuit (which she was engaged in at the time.) She subsequently acted as SAR On-scene Commander of an eight-ship and multi-aircraft search group for the next 16 hours, winning the USCG MUC for that excellent performance. She also rescued several Cuban refugees from the Florida Straits. In 1988, her forward foil nose cone broke off in heavy seas due to repeated overstressing of the mounting tangs, caused by an immature and rash CO frequently hard turning and rapid landing her in fits of boyish abandon. A new nose cone was fabricated at Runyan Shipyard, Pensacola, FL out of 4″ thick aluminum plate stock, and machined/welded/bent into shape. Other units of the class showed early symptoms of these stresses when inspected after the casualty, but it failed first on TAURUS for the reasons stated above. Ask any crew member from 1989 about being beaten severely by the anchor while foilborne at midnight off Panama in 15+ foot seas! She won the PHMRON-2 Battle “E” during that extended competitive cycle, and rightly so. Am I proud of her crew and her record? You bet.
                                                                                                                                                                                                                                                                                                              • David Lloyd
                                                                                                                                                                                                                                                                                                              • LCDR, USNR (ret.)

                                                                                                                                                                                                                                                                                                          [Date/Time=01-03-2004 – 6:02 AM]

                                                                                                                                                                                                                                                                                                            Name:David Lloyd KristiHdrx@aol.com, [Msgid=566066]
                                                                                                                                                                                                                                                                                                            Re; PHM-3 USS TAURUS

                                                                                                                                                                                                                                                                                                                • Oops, nose fairing casualty was 1989, not 1988.

                                                                                                                                                                                                                                                                                                            [Date/Time=01-03-2004 – 2:01 PM]

                                                                                                                                                                                                                                                                                                              Name:David Lloyd KristiHdrx@aol.com, [Msgid=566210]
                                                                                                                                                                                                                                                                                                              Re; Re; PHM-3 USS TAURUS

                                                                                                                                                                                                                                                                                                                  • FYI The Uss Aries still lives.

                                                                                                                                                                                                                                                                                                              http://ussaries.org/

                                                                                                                                                                                                                                                                                                                  • Pictures of PHM(3,4or6)conversion to Yacht

                                                                                                                                                                                                                                                                                                              http://blondiesmachinery.com/phm/5.html
                                                                                                                                                                                                                                                                                                              [Date/Time=01-04-2004 – 7:01 AM]

                                                                                                                                                                                                                                                                                                                Name:Dan Schmidt gse2schmidt@hotmail.com, [Msgid=566442]
                                                                                                                                                                                                                                                                                                                 Image Attached:  “Phm-5.jpg”   Click Here To View
                                                                                                                                                                                                                                                                                                                Re; PHM-3 USS TAURUS

                                                                                                                                                                                                                                                                                                                    • “Give me a fast ship for I intend to go in harm’s way.”
                                                                                                                                                                                                                                                                                                                    • John Paul Jones would have loved to have any one of the PHMs under his command! All the ships were a bit unique and tempermental, and each crew loved theirs the most. Being from the Gemini crew I am pretty partial to her, but IMHO serving on any of the PHMs was better than being on any other surface combatant.
                                                                                                                                                                                                                                                                                                                    • Besides a PHM, only the sight of one of the Battleships passing close aboard would pull the crew out of their racks to line the rails on whatever warship they were on, just to get a glimpse of a PHM flying past.
                                                                                                                                                                                                                                                                                                                    • It was a funny thing to encounter another PHM at sea. At first, all you could see would be a white smudge on the horizon. As she got closer slowly this gray form would take shape, perched atop this mountain of white froth. As she passed, the wake kicked up by the aft struts, combined with the main propulsor output, left a clear indication with the dramatic rooster tail of foam that something special had just flown by. Nothing else like them. Very sad that they are gone. If you served on a PHM you will really enjoy a visit to the last one left in Brunswick, MO.
                                                                                                                                                                                                                                                                                                                    • Very respectfully,
                                                                                                                                                                                                                                                                                                                    • Jon Coile
                                                                                                                                                                                                                                                                                                                    • former LT, USN
                                                                                                                                                                                                                                                                                                                    • Chief Engineer
                                                                                                                                                                                                                                                                                                                    • USS GEMINI (PHM 6)

                                                                                                                                                                                                                                                                                                                [Date/Time=01-05-2004 – 10:56 AM]

                                                                                                                                                                                                                                                                                                                  Name:Jon Coile jon@coile.com, [Msgid=566857]
                                                                                                                                                                                                                                                                                                                  RC PHM-1 Pegasus

                                                                                                                                                                                                                                                                                                                      • I am in the process of undertaking the construction of a 6′ Radio Controlled PHM-1 Pegasus. My father was a Chief (ETC Nosek was his rate I believe) on the first crew, and I stood on the pier as a 9 year old kid on her first arrival to Key West. (Man, how the Coast Guard scratched their heads when she broke the horizon!) I would like to know if anyone has a copy of schematics, or technical drawings for her or the others. Due to the fact that she’s gone and I’ll never see her fly again, I want to build one that will. Also, since some of the correspondance on your pages are dated, what ever came of the others that were due to be scrapped. Are there anymore out there. Feel free to contact me at

                                                                                                                                                                                                                                                                                                                  laseredgt01@aol.com

                                                                                                                                                                                                                                                                                                                      • . Thanks, TDM

                                                                                                                                                                                                                                                                                                                  [Date/Time=03-04-2004 – 3:54 PM]

                                                                                                                                                                                                                                                                                                                    Name:T.D. Mehl laseredgt01@aol.com, [Msgid=607826]
                                                                                                                                                                                                                                                                                                                    PHM-1 Pegasus

                                                                                                                                                                                                                                                                                                                      ViewThread

                                                                                                                                                                                                                                                                                                                          • Gentlemen,
                                                                                                                                                                                                                                                                                                                          • Progress has come along nicely on the 6’6″ PHM-1 Pegasus. I know have a 24″ wide 6’9″ block of foam in order to to start shaping the Pegasus. I have secured the required HydroJet engines to push the boat once she is 14.4″ out of the water. I will build her out of carbon fiber. If the real Pegasus would do 60-70mph, I won’t rest until mine will do at least that! I have the radar guns ready. I will supply pictures once ready of the boat as she progresses. If I get a RC hydrofoil to do 70mph she make the cover of magazines, everybody get ready for the stir! Anyone here remember my Dad? ETCS Lawrence Nosek, he was a Class in Bremerton, then picked up Cheif, and Snr Chf before we left Key West in approx.’83. Thanks, and all of your suggestions, and pointers have beem most helpful. Thanks, Troy Mehl

                                                                                                                                                                                                                                                                                                                      [Date/Time=03-17-2004 – 12:30 AM]

                                                                                                                                                                                                                                                                                                                        Name:T.D. Mehl laseredgt01@aol.com, [Msgid=615561]
                                                                                                                                                                                                                                                                                                                        Ships That Fly

                                                                                                                                                                                                                                                                                                                            • To All Fellow Hydrofoilers;
                                                                                                                                                                                                                                                                                                                            • About 10 years ago I collected a lot of material about hydrofoils and put it all together in a book called Ships That Fly. It became a story of the modern hydrofoil covering the early days of hydrofoil inventors and experimenters and taking the reader through over 150 pictures and illustrations of hydrofoils leading to those of recent years. I recently had the pages of the book scanned and put in a pdf file and placed on a CD that is being offered for sale.
                                                                                                                                                                                                                                                                                                                            • You will note that Chapter 6, The US Navy Fleet Hydrofoil-PHM, ends with a very optimistic view of PHMs in the current US Navy, and larger hydrofoils in its future. However, this was not to be. Several years following the completion of my book, Ships That Fly, there were events surrounding the US Navy PHM program that are described in an Addendum to Chapter 6. All six PHM ships were decommissioned on July 30, 1993. This was the only time the US Navy has decommissioned an entire class of ships on the same day. This addendum describes some of the events leading to this sad day for the US Navy and the hydrofoil community. Also, documented are the many attempts to save the Ship, the day of the ceremony, attempts to save the ships even after the decommissioning, and finally the subsequent disposal of the ships and their status today.
                                                                                                                                                                                                                                                                                                                            • I also collected a series of over 140 hydrofoil pictures and illustrations, and created a Hydrofoil Slide Show, entitled: A Century of Hydrofoil Development.
                                                                                                                                                                                                                                                                                                                            • All three of these files are on the CD. To find out more, log onto:

                                                                                                                                                                                                                                                                                                                        http://themeyers.org/ShipsThatFly/index.html

                                                                                                                                                                                                                                                                                                                            • Best regards,
                                                                                                                                                                                                                                                                                                                            • John Meyer

                                                                                                                                                                                                                                                                                                                        jr8meyer@comcast.net
                                                                                                                                                                                                                                                                                                                        [Date/Time=03-17-2004 – 4:57 PM]

                                                                                                                                                                                                                                                                                                                          Name:John R. Meyer jr8meyer@comcast.net, [Msgid=616016]
                                                                                                                                                                                                                                                                                                                          Re; PHM-1 Pegasus

                                                                                                                                                                                                                                                                                                                              • I knew your father. He was assigned to Training when I got to Key West in ’82. He taught classes on the PHM unique Electronics such as the SPS-63 radar. He was also the resident ACS expert(knew the ACS roadmap like the back of his hand).

                                                                                                                                                                                                                                                                                                                          [Date/Time=04-19-2004 – 3:24 PM]

                                                                                                                                                                                                                                                                                                                            Name:Chuck Shannon ChuckE68@aol.com, [Msgid=633466]
                                                                                                                                                                                                                                                                                                                            Plainview Vet

                                                                                                                                                                                                                                                                                                                                • I found this forum on a Google search after I came across the Plainview’s hulk on a recent vacation. As a member of the last active crew (Operations Specialist) I was shocked when I sighted the instantly recognizable hulk while driving west along the Columbia enroute to the Oregon coast. I pulled the car over and managed to get down a mud slick bank on a windy and rainy day to confirm that it was the Plainview. I was able to climb up the tail strut mount and board the ship, it is in sad shape. There are holes and tears in the aluminum hull and superstructure. The tail foil is laying on the mudflats aft of the ship. What a sad end to a once marvel of engineering. Although the Plainview suffered many problems as documented on this forum (mainly transmission and hydraulic systems) when it was fully operational it was an amazing ride. I personally can attest to experiencing 65 knots as a member of the navigation watch during one trail. It literally flew. Thanks for maintaining this website and answering my questions as to how this happened.

                                                                                                                                                                                                                                                                                                                            [Date/Time=04-22-2004 – 1:56 AM]

                                                                                                                                                                                                                                                                                                                              Name:Michael Temple onedog@nventure.com, [Msgid=634838]
                                                                                                                                                                                                                                                                                                                              GEH1 Plainview being scrapped

                                                                                                                                                                                                                                                                                                                                ViewThread

                                                                                                                                                                                                                                                                                                                                    • From the Chinook Observer, Wed. May 19 with permission:
                                                                                                                                                                                                                                                                                                                                    • Derelict Ship Being Scrapped
                                                                                                                                                                                                                                                                                                                                    • A landmark along WA SR 401 will soon be a thing of the past. The Giant Experimental Hydrofoil 1 (PlainView), at 200 feet, the world?s largest aluminum ship when it was launched in 1969, is being dismantled for scrap by its owners, the Stambaugh family.

                                                                                                                                                                                                                                                                                                                                [Date/Time=05-24-2004 – 1:48 PM]

                                                                                                                                                                                                                                                                                                                                  Name:Bob Cline clinewlt@pacifier.com, [Msgid=653124]
                                                                                                                                                                                                                                                                                                                                   Image Attached:  “hydrofoil_Plainview_scrapped.jpg”   Click Here To View
                                                                                                                                                                                                                                                                                                                                  Re; GEH1 Plainview being scrapped

                                                                                                                                                                                                                                                                                                                                      • Don’t know which is more painful…seeing the old battle-ready Plainview sitting in the mudflats or having it disappear entirely. With its passing, the memories of the Navy’s hydrofoil program will get a little dimmer. When will they go out entirely?
                                                                                                                                                                                                                                                                                                                                      • Greg Bender
                                                                                                                                                                                                                                                                                                                                      • Plainview Chief Engineer ’75-’77

                                                                                                                                                                                                                                                                                                                                  [Date/Time=05-25-2004 – 6:50 AM]

                                                                                                                                                                                                                                                                                                                                    Name:Greg Bender GBender@Noesis-Inc.com, [Msgid=653536]
                                                                                                                                                                                                                                                                                                                                    Re; GEH1 Plainview being scrapped

                                                                                                                                                                                                                                                                                                                                        • Thanks for providing this notice. For those who do not know, the IHS site has archived posted messages, photos, history, etc. about this ship at

                                                                                                                                                                                                                                                                                                                                    http://www.foils.org/plainvw.htm

                                                                                                                                                                                                                                                                                                                                        • .

                                                                                                                                                                                                                                                                                                                                    [Date/Time=05-31-2004 – 7:52 AM]

                                                                                                                                                                                                                                                                                                                                      Name:Barney C Black bblack11@cox.net, [Msgid=656319]
                                                                                                                                                                                                                                                                                                                                      AGEH-1 Plainview Plans

                                                                                                                                                                                                                                                                                                                                          • Hello, I am looking for ship builder plans, or scale views/profiles of the U.S.S Plainview hydrofoil ship. I have looked around alot, and have yet to even come across some simple line drawings of the hull. Can anyone help me please? I am considering doing a radio controlled model, but would like to look over a few of the ones that had been done. I was going to do a PHM-1, but it wasn’t very practical on such limited resources. The Plainview looks more practical, but I would like to see it in views/scale profiles to the scale(s) I would need before considering it completely. Any help please? Thank you much! -James H.

                                                                                                                                                                                                                                                                                                                                      [Date/Time=07-17-2004 – 10:49 PM]

                                                                                                                                                                                                                                                                                                                                        Name:James H. Valkyrie@whoever.com, [Msgid=681311]



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                                                                                                                                                                                                                                                                                                                                        Commercial

                                                                                                                                                                                                                                                                                                                                        Commercial

                                                                                                                                                                                                                                                                                                                                         

                                                                                                                                                                                                                                                                                                                                         

                                                                                                                                                                                                                                                                                                                                        The International Hydrofoil Society (IHS) Hydrofoil Correspondance Archives

                                                                                                                                                                                                                                                                                                                                         

                                                                                                                                                                                                                                                                                                                                         

                                                                                                                                                                                                                                                                                                                                        , 2006

                                                                                                                                                                                                                                                                                                                                        Hydrofoils: Commercial
                                                                                                                                                                                                                                                                                                                                         

                                                                                                                                                                                                                                                                                                                                        Hydrofoils: Commercial      Top

                                                                                                                                                                                                                                                                                                                                         

                                                                                                                                                                                                                                                                                                                                        Archived Messages

                                                                                                                                                                                                                                                                                                                                        Count,MessageID,category,ShortTitle,Message,Date,UserName,MsgPswd,Phone,Email,ParentMsgId

                                                                                                                                                                                                                                                                                                                                        “1”,”908704″,”5″,”Re; Re; Seaflight L.90 information||908704″,”The 1973-74 edition of Janes Surface Skimmers Hovercraft and Hydrofoils has a description and principal characteristics of the L.90 on pages 217-218, but no photo.”,”2005-10-06″,”Barney C Black”,”poopdeck”,” “,” “,”908701”

                                                                                                                                                                                                                                                                                                                                        “2”,”908701″,”5″,”Re; Seaflight L.90 information||908701″,”According to an article “Small Italians” in the April 2001 Classic Fast Ferries Cyberzine, Seaflight completed only the prototype L.90 (in 1973). www.classicfastferries.com/cff/pdf/cff_2001_3.pdf”,”2005-10-06″,”Barney C Black”,”poopdeck”,” “,” “,”902142”

                                                                                                                                                                                                                                                                                                                                        “3”,”902142″,”5″,”Seaflight L.90 information||902142″,”I would like to receive information on the Seaflight L.90 hydrofoil which was built in Messina in the ’70.
                                                                                                                                                                                                                                                                                                                                        One of this type(may be the only one produced) was named SQUALO BIANCO (White Shark).
                                                                                                                                                                                                                                                                                                                                        If someone, worldwide in the foilers community, has any info and/or pictures on the operational life of this beautiful hydrofoil, I will very much appreciate!
                                                                                                                                                                                                                                                                                                                                        Thanks in advance”,”2005-09-27″,”Lorenzo BONASERA”,”nopswd”,” “,”lbonasera@aeronautica.alenia.it”,”5″

                                                                                                                                                                                                                                                                                                                                        “4”,”888998″,”5″,”Small fast boat||888998″,”I am looking for a small fast boat that may be able to take 30 up to 50 passengers. My knowledge in boat is very low. This boat is needed to cross a fast stream river in Africa. We have a project of using this boat as a ferry boat.”,”2005-09-05″,”Okongo Justin “,”nopswd”,” “,”okongo@telus.net”,”5″

                                                                                                                                                                                                                                                                                                                                        “5”,”870718″,”5″,”Re; Re; JUDICIAL SALE – VosKod-2||870718″,”Hi Gerry, IHS does not have a current email address for you. If you want to stay in contact, please send current email address to: president@foils.org. Thanks!”,”2005-08-02″,”Barney C Black”,”poopdeck”,” “,” “,”5”

                                                                                                                                                                                                                                                                                                                                        “6”,”869664″,”5″,”Re; JUDICIAL SALE – VosKod-2||869664″,”Auction Date?
                                                                                                                                                                                                                                                                                                                                        Technical Details?
                                                                                                                                                                                                                                                                                                                                        Photograph?
                                                                                                                                                                                                                                                                                                                                        Status reports currently available?

                                                                                                                                                                                                                                                                                                                                        “,”2005-08-01″,”Gerry Levine”,”nopswd”,” “,”gerrymega@adelphia.net”,”0″

                                                                                                                                                                                                                                                                                                                                        “7”,”867548″,”5″,”JUDICIAL SALE – VosKod-2||867548″,”We have ac ourt order to sell an Hydrofoil 1977 Voskod-2 passenger ship.
                                                                                                                                                                                                                                                                                                                                        Its 26 Meter long. For mor info www.gestionprotec.com (28-07-2005)
                                                                                                                                                                                                                                                                                                                                        located in Montreal Canada and we are told its in very good working condition
                                                                                                                                                                                                                                                                                                                                        contact us now !”,”2005-07-27″,”Robert Boivin”,”nopswd”,” “,”rboivin@canada.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “8”,”867546″,”5″,”JUDICIAL SALE – VosKod-2||867546″,”We have ac ourt order to sell an Hydrofoil 1977 Voskod-2 passenger ship.
                                                                                                                                                                                                                                                                                                                                        Its 26 Meter long. For mor info www.gestionprotec.com (28-07-2005)
                                                                                                                                                                                                                                                                                                                                        located in Montreal Canada and we are told its in very good working condition
                                                                                                                                                                                                                                                                                                                                        contact us now !”,”2005-07-27″,”Robert Boivin”,”nopswd”,” “,”gespro@canada.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “9”,”863081″,”5″,”Re; comparison of jetfoil and catamaran||863081″,”Catamarans make a bigger wake than a hydrofoils.Some Russian hydrofoils are shalow draft, like the Voskhod type.See www.dutchhydrofoils.com for examples of high speed ships navigating on the NorthSee canal.
                                                                                                                                                                                                                                                                                                                                        And www.fastferry.nl for example of high speed catamarans navigating on
                                                                                                                                                                                                                                                                                                                                        a river.”,”2005-07-19″,”mark van Rijzen”,”nopswd”,” “,”dutchhydrofoils@wanadoo.nl”,”0″

                                                                                                                                                                                                                                                                                                                                        “10”,”862464″,”5″,”Re; comparison of jetfoil and catamaran||862464″,”Jetfoil is a specific model of hydrofoil initially designed and built by Boeing Marine. It uses a fully-submerged hydrofoil design and is ocean-going. The hydrofoils that I have heard about being used on rivers are the surface-piercing hydrofoil type, mostly designed and built in Russia. Some hydrofoils built by Helmut Kock are still in use on Lake Titicaca in Peru. There is info on these and other hydrofoils throughout the IHS site and elsewhere.”,”2005-07-18″,”Barney C Black”,”nopswd”,” “,” “,”0”

                                                                                                                                                                                                                                                                                                                                        “11”,”859475″,”5″,”comparison of jetfoil and catamaran||859475″,”Dear reader,

                                                                                                                                                                                                                                                                                                                                        Does anybody know why catamarans are not used on rivers for the commercial transport of passengers whereas jetfoils are? What are the functional differences between jetfoil and catamaran that provoke the catamaran not to be used on rivers or canals. Does anybody know examples of high speed ships navigating on rivers and canals? I know about jetfoils in the netherlands and on the danube but that is just about as far as my knowledge stretches. I would be grateful for any information!

                                                                                                                                                                                                                                                                                                                                        “,”2005-07-12″,”Chris Beghin”,”nopswd”,” “,”xris1510@hotmail.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “12”,”853110″,”5″,”LASTOCHKA-M HYDROFOIL NEWBUILDING CONTRACTING||853110″,”Dear sir,

                                                                                                                                                                                                                                                                                                                                        Pls contact me as I’m very interested by your offers.
                                                                                                                                                                                                                                                                                                                                        My e mail adress is : mamode@wanadoo.mg

                                                                                                                                                                                                                                                                                                                                        Regards
                                                                                                                                                                                                                                                                                                                                        Mamode”,”2005-06-29″,”mamode”,”nopswd”,” “,”mamode@wanadoo.mg”,”0″

                                                                                                                                                                                                                                                                                                                                        “13”,”852276″,”5″,”LASTOCHKA-M HYDROFOIL NEWBUILDING CONTRACTING||852276″,””VOLGA” SHIPYARD PROPOSING NEW-BUILDING CONTRACTING FOR ‘LASTOCHKA-M’ TYPE PASSENGER HYDROFOIL. 75-86 PASSENGERS / SERVICE SPEED 45 KNOTS. FOR MORE INFORMATION AND PHOTOS CLICK HERE http://www.volga-shipyard.com/index.php?lang=eng&section=products&catid=4&craft_id=24

                                                                                                                                                                                                                                                                                                                                        WE ALSO LOOKING FOR CUTOMERS TO DEVELOPE NEW PERSPECTIVE PROJECT SEA-GOING HYDROFOIL ‘KOMETA-120M’.
                                                                                                                                                                                                                                                                                                                                        http://www.volga-shipyard.com/index.php?lang=eng&section=projects&catid=4&craft_id=7

                                                                                                                                                                                                                                                                                                                                        FOR MORE INFORMATION PLS CONTACT VYACHESLAV FEDOROV:
                                                                                                                                                                                                                                                                                                                                        ‘VOLGA’ SHIPYARD – MOSCOW SALES OFFICE
                                                                                                                                                                                                                                                                                                                                        TEL/FAX:+7 095 254 04 43 OR
                                                                                                                                                                                                                                                                                                                                        E-MAIL: SLAVA@CIELO-TRADING.NET
                                                                                                                                                                                                                                                                                                                                        HTTP://WWW.VOLGA-SHIPYARD.COM/

                                                                                                                                                                                                                                                                                                                                        “,”2005-06-28″,”FEDOROV VYACHESLAV”,”nopswd”,” “,”SLAVA@CIELO-TRADING.NET”,”0″

                                                                                                                                                                                                                                                                                                                                        “14”,”832530″,”5″,”INVESTMENT OPPORTUNITY||832530″,”INVESTMENT OPPORTUNITY

                                                                                                                                                                                                                                                                                                                                        Calling For Investment in Passenger Fast Ferry Operation in West Coast of Africa.
                                                                                                                                                                                                                                                                                                                                        I am interested in a joint venture with a partner/s who might have or could finance 1 or 2 seagoing passenger hydrofoils or fast ferries for us to start a coastal operation in West Africa. He might need to invest as much as $1.7 M to buy and bring successfully to West Africa an hydrofoil not older than 6 years. Or as much as $5 – $10 M for a fast ferry in range of 0.1 to 8 years old. I am advised not to buy vessels that are too old in order to enjoy hitch free operations. Vessels capable of carrying 120 – 350 passengers together with 5 – 25 tons of cargo are good for the routes. Demand for such ferry service is high and there is non on the routes at present.
                                                                                                                                                                                                                                                                                                                                        This project can also be financed by preferential loan arrangement, repayable within 1 to 3 years of operation.
                                                                                                                                                                                                                                                                                                                                        I am 53 years old, born again Christian, a qualified Shipbroker, member of the Institute of Chartered Shipbrokers, London elected in 1983.
                                                                                                                                                                                                                                                                                                                                        For full details, Interested investors should contact me – Yinka Olaipe.
                                                                                                                                                                                                                                                                                                                                        Tel: 08055620933 or 08023154661 E-mail: lmhcoastal@yahoo.co.uk.
                                                                                                                                                                                                                                                                                                                                        Addresss: LMH Nig. Ltd (Shipping & Shipbroking) 6, Airways Road, Ijeshatedo, P. O. Box 6271, Surulere, Lagos, Nigeria.
                                                                                                                                                                                                                                                                                                                                        “,”2005-05-21″,”Yinka Olaipe”,”nopswd”,” “,”lmhcoastal@yahoo.co.uk”,”0″

                                                                                                                                                                                                                                                                                                                                        “15”,”832472″,”5″,”Commercial Jetfoils||832472″,”Does anyone know how many Jetfoils are still operating in the world? Also whatever happenned to the ones that went to Indonesia and sat there for all these years? “,”2005-05-21″,”Rod Clayards”,”nopswd”,” “,”rodbev@shaw.ca”,”0″

                                                                                                                                                                                                                                                                                                                                        “16”,”831700″,”5″,”Former Seajets Engineer Will Tell All||831700″,”Aloha-
                                                                                                                                                                                                                                                                                                                                        I am former Engineer/ Diver for the ill-fated Seajets Boeing 929 Florida to Bahamas operation . I will answer any inquiries regarding the experiences of hydrofoil ferry service in US waters as a member of the Maintenance Department. Feel free to contact me “Boatdoc@aol.com” Michael Berman”,”2005-05-20″,”Michael Berman”,”nopswd”,” “,”Boatdoc@aol.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “17”,”794438″,”5″

                                                                                                                                                                                                                                                                                                                                         

                                                                                                                                                                                                                                                                                                                                        “18”,”780611″,”5″,”Re: Hydrofoils – Vietnam||780611″,”No personal experience. Schedules posted at the following webpages:

                                                                                                                                                                                                                                                                                                                                        http://www.vietnamopentour.com/Transport/waterway.htm
                                                                                                                                                                                                                                                                                                                                        http://www.sinhcafetour.com/waterways.html

                                                                                                                                                                                                                                                                                                                                        A traveler posted a couple of photos of the vessels at this page:
                                                                                                                                                                                                                                                                                                                                        http://homepage.mac.com/wkaemena/Public/PhotoAlbum60.html”,”2005-02-12″,”Barney C Black”,”poopdeck”,” “,”bcblack@erols.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “19”,”780554″,”5″,”Hydrofoils – Vietnam||780554″,”We will be visiting Vung Tau, Vietnam, in late March as a part of a cruise to other places in Australia and SE Asia. We will have only one day in Vung Tau and I would like to travel by hydrofoil to Ho Chi Minh City for sightseeing and shopping. Does anyone have any experiences with the hydrofoil services from Vung Tau-HCMC and return? If there are companies recommended, or to be avoided, I would appreciate comments. If there are any other places in Australia, Singapore, or Thailand where we could have a hydrofoil or high-speed catamaran ride during a one-day tour stop, I would like to know about those also. Thanks.”,”2005-02-12″,”Ralph Patterson”,”nopswd”,” “,”RAPatterson.57@alum.dartmouth.org”,”0″

                                                                                                                                                                                                                                                                                                                                        “20”,”764235″,”5″,”METEOR-2000 HYDROFOIL FOR SALE||764235″,”ZELENODOLSK SHIPYARD, russia, OFFER NEW METEOR-2000 HYDROFOILS AND NEW FFF. 12 months – guaraties.
                                                                                                                                                                                                                                                                                                                                        PLEASE WRITE snikonov63@yahoo.com
                                                                                                                                                                                                                                                                                                                                        S.Nikonov
                                                                                                                                                                                                                                                                                                                                        marketing manager”,”2005-01-14″,”sergey nikonov”,”nopswd”,” “,”snikonov63@yahoo.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “21”,”750876″,”5″,”||||750876″,”We are investigating the possibilty of aquiring a small to medium size hydrofoil for commercial use on NE coast UK. Seating for 50/60 persons with shallow draft with foils retracted.
                                                                                                                                                                                                                                                                                                                                        “,”2004-12-13″,”Bob Roberts”,”nopswd”,” “,”enquiries@fibretalk.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “22”,”744252″,”5″,”Re: Disco Volate||744252″,”Are you aware that Disco Volate/volante was a fake that did not fly?

                                                                                                                                                                                                                                                                                                                                        I saw a TV program (was it Movie Magic?) that showed the special effects involved. They built a big model of the craft from the water line up. This was placed on a planing hull and was photographed at speed using a blue mat as a background. Then they inserted images of foils inplace of the planing hull.

                                                                                                                                                                                                                                                                                                                                        I saw this quite a while ago, so I may be reporting some of these details inaccurately, but I definately remember my disappointment that this improbable design did not really fly in the movie.”,”2004-11-27″,”Ray Vellinga”,”nopswd”,” “,”rvell@san.rr.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “23”,”738770″,”5″,”Investment Opportunity ||738770″,”Investment Opportunity in Passenger Fast Ferry Operation on West Coast of Africa
                                                                                                                                                                                                                                                                                                                                        I am interested in a joint venture with a partner who might have or could finance 1 or 2 Seagoing Passengers Hydrofoils or Fast Ferries for us to start a coastal operation in West Africa. He might need to invest as much as $500K – $1M in buying the hydrofoils, while I would offer the management side of the operation. The demand for such ferry services is high. There is no such service at the moment. I am a qualified Shipbroker, member of the Institute of Chartered Shipbrokers, London since 1983. And above all, I am a born again Christian.
                                                                                                                                                                                                                                                                                                                                        Interested investor should contact — Yinka Olaipe. Lagos. Tel: 08023154661
                                                                                                                                                                                                                                                                                                                                        E-mail: lmhcoastal@yahoo.co.uk

                                                                                                                                                                                                                                                                                                                                        “,”2004-11-16″,”Yinka Olaipe”,”nopswd”,” “,”lmhcoastal@yahoo.co.uk”,”0″

                                                                                                                                                                                                                                                                                                                                        “24”,”714918″,”5″,”Hydrofoils for sale||714918″,”Dear Mr. Whatley,

                                                                                                                                                                                                                                                                                                                                        attached you will find information regarding two hydrofoils. In order to give an estimate of the shipping costs to SE Asia we have to know to which place they are to be shipped. We normally advise the vessels to be shipped as deck cargo. Both vessels are owned by a Dutch Shipping Company and the sale will be conducted directly from the owner. Both ships are currently registered in the Neteherlands.
                                                                                                                                                                                                                                                                                                                                        All the documents you like to see are ready for your inspection and you are welcome to see those at your convenience.

                                                                                                                                                                                                                                                                                                                                        Kind regards,

                                                                                                                                                                                                                                                                                                                                        Marcel Roelofs
                                                                                                                                                                                                                                                                                                                                        Chevalier
                                                                                                                                                                                                                                                                                                                                        Voorplecht 15
                                                                                                                                                                                                                                                                                                                                        1186 WP Amstelveen
                                                                                                                                                                                                                                                                                                                                        The Netherlands
                                                                                                                                                                                                                                                                                                                                        Tel + 31 20 453 75 90
                                                                                                                                                                                                                                                                                                                                        Fax + 31 20 453 75 91
                                                                                                                                                                                                                                                                                                                                        Mobile + 31 6 22535406
                                                                                                                                                                                                                                                                                                                                        E-mail Marcel.Roelofs@12move.nl “,”2004-09-27″,”Chevalier Floatels”,”nopswd”,” “,”marcel.roelofs@12move.nl”,”0″

                                                                                                                                                                                                                                                                                                                                        “25”,”712040″,”5″,”Re: Purchase/Lease 2 Hydro Passenger Boats (used)||712040″,”We are in the process of narrowing the field of available crafts, can you forward any additional information regarding the two that you are offering.
                                                                                                                                                                                                                                                                                                                                        Who has the title to these crafts, availability for inspections, logs, references, bank references etc.
                                                                                                                                                                                                                                                                                                                                        We also wish to have your estimate of transfers of the two units to SE Asia.
                                                                                                                                                                                                                                                                                                                                        Best regards,
                                                                                                                                                                                                                                                                                                                                        R Whatley
                                                                                                                                                                                                                                                                                                                                        Reginatorw@netscape.net”,”2004-09-20″,”R Whatley”,”nopswd”,” “,”reginatorw@netscape.net”,”0″

                                                                                                                                                                                                                                                                                                                                        “26”,”710440″,”5″,”For sale MTU 12V 331, W6 overh.||710440″,”One (1) W6 overhauled MTU 12V 331 TC82 marine engine for sale.
                                                                                                                                                                                                                                                                                                                                        Rated 1050 HP at 2050 RPM.
                                                                                                                                                                                                                                                                                                                                        Engine has only 90 hours of operation after complete W6 overhaul (testing and adjustments).
                                                                                                                                                                                                                                                                                                                                        Ready to install. The engine can easily be converted to TC92 (1582 HP) or derated to TC81 version by adjustment of governor.
                                                                                                                                                                                                                                                                                                                                        A very common engine in Rodriquez hydrofoils.

                                                                                                                                                                                                                                                                                                                                        A W6 overhaul of a 12V 331 cost 80-100.000 EUR or more today.

                                                                                                                                                                                                                                                                                                                                        Price: 65.000 EUR or best offer.

                                                                                                                                                                                                                                                                                                                                        Contact:
                                                                                                                                                                                                                                                                                                                                        Bo Berglund
                                                                                                                                                                                                                                                                                                                                        Rickenbacker Sweden Phone: +46-708-37 23 58, Fax: +46-708-37 33 58
                                                                                                                                                                                                                                                                                                                                        Email: calibrator@telia.com
                                                                                                                                                                                                                                                                                                                                        “,”2004-09-17″,”Bo Berglund”,”nopswd”,” “,”calibrator@telia.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “27”,”706667″,”5″,”Re: Disco Volate||706667″,”There is info on the Disco Volante in several areas of the IHS correspondence archives. Most of the interest is from people who want to model the vessel. Go to each of the following pages and scroll down in the correspondence or search on the page for Disco Volante. Also feel free to try to contact any of the people who has corresponded on this subject to see if they have more recent information:
                                                                                                                                                                                                                                                                                                                                        http://www.foils.org/modelrc.htm
                                                                                                                                                                                                                                                                                                                                        http://www.foils.org/media.htm
                                                                                                                                                                                                                                                                                                                                        http://www.foils.org/pioneers.htm
                                                                                                                                                                                                                                                                                                                                        http://www.foils.org/gallery/badges.htm
                                                                                                                                                                                                                                                                                                                                        http://www.foils.org/postmisc.htm
                                                                                                                                                                                                                                                                                                                                        http://www.foils.org/models.htm

                                                                                                                                                                                                                                                                                                                                        A newspaper ad offering the vessel for sale is at:
                                                                                                                                                                                                                                                                                                                                        http://www.foils.org/ffishad.jpg

                                                                                                                                                                                                                                                                                                                                        Note that Jean Buhler of Miami Shipbuilding is still alive and well, so you could call him if you want to chat about this vessel or any other MSC projects.
                                                                                                                                                                                                                                                                                                                                        “,”2004-09-10″,”Barney C Black”,”poopdeck”,” “,”bcblack@erols.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “28”,”705949″,”5″,”amphibian hovrcraft(10T-20T)Russian||705949″,”I would like to take lease amphibian hovercraft for long tram basis for cargo purpose.If you are interested please inform me as soon as possiable.”,”2004-09-09″,”Ruman Barua”,”nopswd”,” “,”rum27m@yahoo,com”,”0″

                                                                                                                                                                                                                                                                                                                                        “29”,”705497″,”5″,”LOOKING TO BUY HYDROFOILS.||705497″,”I am interested in receiving information on new (or not too old) foils for passengers for sale and/or lease. They have to hold at least 100pp.

                                                                                                                                                                                                                                                                                                                                        Please send price, photos, characteristics and conditions of sale.

                                                                                                                                                                                                                                                                                                                                        Anyone with this kind of foils for sale, please contact me at
                                                                                                                                                                                                                                                                                                                                        kikeolarte@yahoo.com

                                                                                                                                                                                                                                                                                                                                        Thank you

                                                                                                                                                                                                                                                                                                                                        Enrique”,”2004-09-08″,”Enrique”,”nopswd”,” “,”kikeolarte@yahoo.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “30”,”703351″,”5″,”Re: seeking old russian high speed hydrofoils ||703351″,”We currently have an older Meteor Hydrofoil available. It is not offered for lease but for sale. However the asking price is only
                                                                                                                                                                                                                                                                                                                                        170000 euro and we are open for offers. I will send you additinal information by email
                                                                                                                                                                                                                                                                                                                                        Kind regrads,

                                                                                                                                                                                                                                                                                                                                        Marcel Roelofs”,”2004-09-02″,”Chevalier Floatels”,”nopswd”,” “,”marcel.roelofs@12move.nl”,”0″

                                                                                                                                                                                                                                                                                                                                        “31”,”703339″,”5″,”Hydrofoils for sale||703339″,”We currently have 2 hydrofoils for sale which are very reasonably priced. Both are Meteoor and have been in service until recently. Both vessels are still in class.

                                                                                                                                                                                                                                                                                                                                        I will send you some pictures and some information per seperate email”,”2004-09-02″,”Chevalier Floatels”,”nopswd”,” “,”marcel.roelofs@12move.nl”,”0″

                                                                                                                                                                                                                                                                                                                                        “32”,”702063″,”5″,”Disco Volate||702063″,”I am looking for the Flying Fish Hydrofoil used in the James Bond movie Thunderball. Its movie name was the Disco Volante. Any info would be appreciated.
                                                                                                                                                                                                                                                                                                                                        Thank You,
                                                                                                                                                                                                                                                                                                                                        Dick Henry”,”2004-08-30″,”Dick Henry”,”nopswd”,” “,”mrdr0590@comcast.net”,”0″

                                                                                                                                                                                                                                                                                                                                        “33”,”699313″,”5″,”Purchase/Lease 2 Hydro Passenger Boats (used)||699313″,”We represent a concern wishing to lease/buy 2 used passenger boats, to be operated in SE Asia. Must have excellent log of maintenance etc. 35+ mph, 240+ PAX. We are quite serious and will consider serious opportunities only. Please feel free to forward leads to our email as well.
                                                                                                                                                                                                                                                                                                                                        “,”2004-08-25″,”R Whatley”,”nopswd”,” “,”reginatorw@netscape.net”,”0″

                                                                                                                                                                                                                                                                                                                                        “34”,”694828″,”5″,”seeking old russian high speed hydrofoils ||694828″,”i am seeking russian old hydrofoils for long tarms lease any type of condition (rocket, cyclone,kometa7,vliegb,oly15,kara4,metrus)please contact by mail”,”2004-08-15″,”Ruman Barua”,”nopswd”,” “,”rum27m@yahoo.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “35”,”691580″,”5″,”Re; I Need some Help||691580″,”Hi Andreh
                                                                                                                                                                                                                                                                                                                                        I`m interested to buy your boats.Please contact me as soon as possible

                                                                                                                                                                                                                                                                                                                                        Best regards

                                                                                                                                                                                                                                                                                                                                        Captain Ali Jodat
                                                                                                                                                                                                                                                                                                                                        “,”2004-08-08″,”Captain Ali Jodat”,”nopswd”,” “,”jodat@technicon-tic.com”,”0″

                                                                                                                                                                                                                                                                                                                                        “36”,”691508″,”5″,”Re; I Need some Help||691508″,”andre,

                                                                                                                                                                                                                                                                                                                                        please take digital photos, send them to me or mail to

                                                                                                                                                                                                                                                                                                                                        jeffrey Phipps
                                                                                                                                                                                                                                                                                                                                        500 orchard Pond Rd.
                                                                                                                                                                                                                                                                                                                                        Tallahassee, FL 32312

                                                                                                                                                                                                                                                                                                                                        850-528-1459

                                                                                                                                                                                                                                                                                                                                        Hablo un poco de espanol, y trabaje in Brazil por dos meses en 1993, entonces puede comprehende un poco de portugues.

                                                                                                                                                                                                                                                                                                                                        I am going to Paraguay in six months, would love to look at your equipment with the idea to purchase all three craft, for conversion or to put into service.

                                                                                                                                                                                                                                                                                                                                        Please indicate where you are,

                                                                                                                                                                                                                                                                                                                                        sincerely,

                                                                                                                                                                                                                                                                                                                                        jeffrey Phipps,”,”2004-08-07″,”jeff phipps”,”nopswd”,” “,”jfipps@growthinnovations.com”,”0″

                                                                                                                                                                                                                                                                                                                                         

                                                                                                                                                                                                                                                                                                                                        Archive; Buy/Sell/Restore/Convert Hydrofoil

                                                                                                                                                                                                                                                                                                                                        Click below to Open

                                                                                                                                                                                                                                                                                                                                        http://www.foils.org/buyferry.htm
                                                                                                                                                                                                                                                                                                                                        [Date/Time=03-24-2002 – 3:12 PM]

                                                                                                                                                                                                                                                                                                                                        Name:webmaster@foils.org [Msgid=237684]
                                                                                                                                                                                                                                                                                                                                        Archive; Where To Buy Hydrofoil Work Boat
                                                                                                                                                                                                                                                                                                                                        Work Boat for Commercial Algae Harvesting

                                                                                                                                                                                                                                                                                                                                            • [3 Dec 97] I am a commercial harvester of a blue green algae on Upper Klamath Lake, Klamath Falls, Oregon, USA. The raw product is transported 10 to 14 miles to its drop-off point. We will be upgrading our transport system for the next harvest season. Our objectives are as follows: two (2) transport boats, each 24 to 26 ft. in length; payload of 2500 lb. ; transport speed 60 mph at 70% power. Klamath lake is 25 miles long, 5 miles wide and averages 9 ft. deep. The lake level will seasonally drop to 4.5 ft. in the shallower spots that we must cross. 2 to 3 ft. chop is to be expected when
                                                                                                                                                                                                                                                                                                                                            • sudden winds occur. We are currently talking with American Offshore (Grove Oklahoma – 26 ft. tunnel), Shoell Marine (24 ft. step hull, fiberglass, Ft. Lauderdale, Florida) and Wind River (step hull, 24-26ft. alum. Pasco Washington) All these folks claim to be able to get the job done with 400 to 550 hp. That works out to 20 to 24 gallons per hour in fuel, or US$432 per day, or US$43,000 per year.
                                                                                                                                                                                                                                                                                                                                            • Enter the foil– will it work, is it more economical, do they break away when you hit a solid object? OK folks, as you can see we are hunting. Look forward to your input, positive or otherwise.
                                                                                                                                                                                                                                                                                                                                            • — Mike Reynolds, Flos-Aquae llc (

                                                                                                                                                                                                                                                                                                                                        flosaqua@cdsnet.net

                                                                                                                                                                                                                                                                                                                                            • )
                                                                                                                                                                                                                                                                                                                                            • Response…
                                                                                                                                                                                                                                                                                                                                            • [21 Mar 98] Re: the Algae harvester, a Hydrofoils, Inc. craft to move (6) 462 lb. drums and two people at 70 mph @ 75% power two 4 hour shifts / day, with reasonable periodic down time for maintenance, will cost just over US$200,000. Flos-Aquae 11c wanted something in the $US50,000 price range, and I’m sure no boat will meet that criteria for that price. We did some heavy calculations and drawings, and the boat is basically designed. I would loved to have this project but I don’t think it’s going to fly at this time.
                                                                                                                                                                                                                                                                                                                                            • Ken Cook, Hydrofoils, Inc. (

                                                                                                                                                                                                                                                                                                                                        kencook@hydrofoil.com

                                                                                                                                                                                                                                                                                                                                            • )
                                                                                                                                                                                                                                                                                                                                            • _________________________________________________________________

                                                                                                                                                                                                                                                                                                                                        Click Below to Open related Archive.

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                                                                                                                                                                                                                                                                                                                                        [Date/Time=03-25-2002 – 3:54 PM]

                                                                                                                                                                                                                                                                                                                                        Name:Webmaster@foils.org [Msgid=238100]
                                                                                                                                                                                                                                                                                                                                        Want to Buy 2 Hydrofoils

                                                                                                                                                                                                                                                                                                                                        ViewThread

                                                                                                                                                                                                                                                                                                                                            • We are urgently in need to buy two (02) used passenger hydrofoil boats with the following requirements:
                                                                                                                                                                                                                                                                                                                                            • – Year of manufacture: 1992 or later
                                                                                                                                                                                                                                                                                                                                            • – Number of passengers: 65 – 85
                                                                                                                                                                                                                                                                                                                                            • – Speed: at least 60 km/h
                                                                                                                                                                                                                                                                                                                                            • Could you please help us locate reliable suppliers, thank you in advance.
                                                                                                                                                                                                                                                                                                                                            • Best regards,
                                                                                                                                                                                                                                                                                                                                            • Hong Duong
                                                                                                                                                                                                                                                                                                                                            • SECOIN CO., LTD.
                                                                                                                                                                                                                                                                                                                                            • Address: 59 Hang Chuoi Street, Hai Ba Trung District
                                                                                                                                                                                                                                                                                                                                            • Hanoi, Vietnam
                                                                                                                                                                                                                                                                                                                                            • Phone: 84-4-971 8899 (6lines) ; Fax: 84-4-971 8898
                                                                                                                                                                                                                                                                                                                                            • Mobile:84-913-207676
                                                                                                                                                                                                                                                                                                                                            • Email:

                                                                                                                                                                                                                                                                                                                                        mailto:secoin@fpt.vn

                                                                                                                                                                                                                                                                                                                                            • or

                                                                                                                                                                                                                                                                                                                                        mailto:secoin@hn.vnn.vn

                                                                                                                                                                                                                                                                                                                                            • URL:

                                                                                                                                                                                                                                                                                                                                        http://www.secoin-ltd.com

                                                                                                                                                                                                                                                                                                                                            • or

                                                                                                                                                                                                                                                                                                                                        http://www.seterra.com

                                                                                                                                                                                                                                                                                                                                            • SECOIN Import-Export Forum:

                                                                                                                                                                                                                                                                                                                                        http://secoin.go.to/

                                                                                                                                                                                                                                                                                                                                            • SECOIN Trade Bulletin Board:

                                                                                                                                                                                                                                                                                                                                        http://secoin.come.to/

                                                                                                                                                                                                                                                                                                                                            • SECOIN Photo Center:

                                                                                                                                                                                                                                                                                                                                        http://clik.to/secoin

                                                                                                                                                                                                                                                                                                                                        [Date/Time=05-04-2002 – 8:20 AM]

                                                                                                                                                                                                                                                                                                                                        Name:Hong Duong secoin@fpt.vn, [Msgid=255274]
                                                                                                                                                                                                                                                                                                                                        Hydrofoil FOR SALE

                                                                                                                                                                                                                                                                                                                                        ViewThread

                                                                                                                                                                                                                                                                                                                                            • I am writing on behalf of the owner of a 77 foot, 145 passenger, 32 knots, 550 miles-range catamaran ferry. It is available immediately: please contact me at

                                                                                                                                                                                                                                                                                                                                        hv1@lantic.net

                                                                                                                                                                                                                                                                                                                                            • .


                                                                                                                                                                                                                                                                                                                                        [Date/Time=05-04-2002 – 11:54 AM]

                                                                                                                                                                                                                                                                                                                                        Name:Hein Vogel