The International Hydrofoil Society

The Hydrofoil Resource Site

Sustaining Members of the International Hydrofoil Society

(Last Update April 18, 2013 )

Joining with other hydrofoilers to support the IHS…




Island Engineering, formed in 1999, is dedicated to design and engineering support of high performance marine vehicles- primarily for the development of advanced ride control systems. These systems are analogous to an aircraft flight control system. Unlike traditional fin roll stabilization systems, a ride control system often reduces dynamic variations in pitch, roll, yaw and/or heave motions simultaneously- while concurrently maintaining list, trim, heading or height above the surface at user-defined values.  Proper design and implementation of the entire integrated system, from the effectors and their servo dynamics to the main control algorithm software, is essential in achieving the highest possible performance.

Island Engineering personnel employ 3D CAD/CAM, Algor FEMPRO FEA with MES, plus various vortex lattice and panel based CFD analysis tools to optimize the effectors for these systems. Sea-keeping simulations, model tests, a vast experience base and scientifically performed sea trials are also used to refine system parameters.

The most advanced IEI motion stabilization system, fielded jointly with Quantum Marine Engineering of Florida, is currently installed on the U.S. Navy’s LSC(X) ‘Sea Fighter’. The system consists of two actively controlled titanium ‘T’ foils mounted near the bow, two active transom interceptors, and two actively controlled flapped skegs for yaw control. System components are linked via an EMI resistant fiber optic LAN.

‘Spectrum’ systems can be provided for vessels of all types in the 50-300’ range. IEI recently installed yacht trim tab systems on a 56 Ft monohull, as well as a 65 Ft catamaran built by Multihull Technologies in Florida.

For more Information Click Here

Click Here to contact: Bmcfann@IslandEngineering.com


Maritime Applied Physics Corporation (MAPC) provides a mix of scientists, engineers, naval architects and technicians who are motivated to move ideas from concept through design and prototype. This work is performed for U. S. Government sponsors as well as commercial organizations. In most instances, MAPC works in the pre-competitive stage of development where the sponsor can use MAPC design materials and prototype hardware to obtain low cost production at low risk. MAPC maintains staff and facilities to prototype complex mechanical, electrical, thermal and electronic systems.

Advanced technology systems design and prototyping including naval architecture, marine, mechanical, aeronautical, electrical and automotive engineering.
Conventional and advanced marine vessel design and fabrication
Seakeeping and hydrodynamic performance prediction
Vessel motion control system design, fabrication, installation and testing
Electrical system design and fabrication
Welding, fabrication and machining of all materials
3D solid modeling and animations
Tow tank model design and construction
Composite structure and cast urethane fabrication

Click Here to contact Mark Rice: mrice@mapcorp.com


NAIAD DYNAMICS® combines Stabilizer and Ride Control System manufacturers Naiad Marine Systems®, Maritime Dynamics, Vosper Motion Control®, Vosper Stabilizers, VT Marine Products and KoopNautic Holland.  The full integration of these jointly-owned businesses occurred in early 2009 when NAIAD MARITIME GROUP, INC acquired all global operations and reorganized them as NAIAD DYNAMICS with interlinked facilities across the USA, in the UK and Netherlands.


Responsible for more than 10,000 stabilization systems in the luxury yacht, commercial ship and military ship markets—including 50 of the world’s Navies, most of the world’s fast ferries,  and more luxury yachts than any other company. The combined fielded experience and technical expertise of NAIAD DYNAMICS is unmatched in marine motion control.


Proven applications include displacement and planning monohulls, catamarans, trimarans, surface effect ships (SES), SWATH, SLICE, RHIBS and other advanced hull forms from 10 to 150m.  Recent military applications include the US Navy’s sophisticated 115m Freedom Class Littoral Combat Ships and Royal Norwegian Navy Skjold class SES.


Extensive FEA engineering design, CFD hydrodynamic  design, naval architecture  and structural analysis, highly correlated proprietary ship modeling and simulation, full CNC manufacturing to US military aerospace standards, fabrication, full scale assembly and testing, tear down and repair facilities,  dynamometer load testing, motion simulation hydraulic testing, electrical assembly and  testing laboratory, extensive software engineering and programming.


ToughSonic® Ultrasonic Sensors.  Tough. Smart.

ultrasonic sensors ToughSonic familySenix ToughSonic® ultrasonic sensors measure level and distance through air using ultrasonic sound waves, often replacing unreliable mechanical devices. They provide high reliability and fast, non-contact measurements at distances up to 50 feet (15.2 meters). Thousands are in use worldwide in many industries in both indoor and outdoor applications.

The Senix ToughSonic and ToughSonic CHEM product lines represent more than 25 years of ultrasonic innovation and engineering. Senix was the first company to introduce computer-controlled ultrasonic sensors in 1990 and we have been making them tougher and smarter ever since. Senix ultrasonic sensors are designed to handle even the most challenging liquid and distance measurement applications and environments. We make them tough and smart and we back them up with outstanding customer service and support.

What types of targets can sensors detect?

A wide range of materials can be measured, including hard or soft, colored or transparent, flat or curved.

Chart showing ultrasonic Distance Measurement with different objects at varying ranges

ToughSonic general purpose sensors


  • Type 316 stainless steel housings
  • Sealed epoxy potted construction
  • Ruggedized piezoelectric ultrasonic transducers, potted in place
  • Liquid tight IP68 immersion rating
  • IEC compliant electrical interface protection
  • Hardened ToughSonic internal electronics
  • UV-resistant, potted-in cable
  • CE compliant

Call or email us with your sensor challenges before or after you purchase our products.  We’ll help you get the most out of your ultrasonic sensors. +1 802 489 7585.

 Gig Harbor Marina and Boatyard is the home of the West Coast International Hydrofoil Society.

We have it all: central location, covered and uncovered slips, free parking and no long-term lease. We’re also the ONLY marina in Gig Harbor with a full service boatyard offering haulout and repairs to help you with all of your boat maintenance needs.

Just a few things we do very well:


  • Color matched gelcoat repairs
  • Fiberglass repairs above and below waterline
  • Structural fiberglass repairs
  • Non-skid deck repairs

Mechanical repairs

  • Tune ups (Gasoline inboard)
  • Oil and filter changes
  • Fuel filter changes
  • Coolant change
  • Circulation/Water pumps
  • Oil coolers and heat exchangers
  • Hot water heaters
  • Troubleshooting on gasoline and diesel engines
  • Plumbing repairs: Head systems/ Bilge pumps/Thru hulls and seacocks
  • Engine and gear box removal and installation
  • Engine alignments
  • Cutlass bearings
  • Transducer installations
  • Underwater hardware repair/replacement: props, shafts, trim tabs, etc
  • Dripless or traditional stuffing box replacement and service
  • Remove and replace worn hoses

General Vessel Maintenance and Repair

  • Pressure washing
  • Zinc replacement
  • Buff and wax hullsides
  • Clean underwater hardware and running gear
  • Hull stain removal
  • Prep and paint bottom with antifouling paint
  • Boot or sheer stripe/Painted application or tape
  • Outdrive prep and painting
  • Bilge pumps
  • Winterization
  • Mast Rigging

Electrical Repair

  • Troubleshooting
  • Charging, battery, inverter and Genset problems
  • Wiring/Panel upgrades and repair
  • Electronics installation
  • Boat trailer lighting
  • Shorepower repairs
  • Mast lights
  • Windless Installation

Forklift Service

  • Gasoline or small diesel engine removal and/or installation

This Page Prepared and Maintained By…

International Hydrofoil Society



Return to Front Page