Light Ship SWBS Weight Group Study Report, Masincup, Aug 84 (0113)
A study was undertaken to examine the relationships between three digit SWBS weight groups in groups 2, 3, 5, and 6, and various characteristics of a ship displacing less than 3600 tons. Of particular interest was a comparison of real ship data (i.e. data obtained from ships already built, already under construction, or of sufficiently detailed design as to make their weight reports reliable) to the algorithms currently being used in the SESDOC program to predict group weights. The eleven ships used as the database for this study range from the 135 LT SES-110 to the 3585 LT FFG-7 (Oliver Hazard Perry). With the exception of the SES-110, all of the ships are combatants, and all except the 3K SES and PCM have been built. The PCG-61is a ship which was built specifically for the Royal Saudi Naval Forces. The PG-92, FF1049, FF1059, and PF 103 are all older ships which have not benefited from the latest in lightweight materials and technology. However, they were still considered useful for this study. Two basic types of plots were created using these ship's data: SWBS group weight vs. ship displacement and SWBS group weight vs. the SESDOC algorithm's driving variable. Only a few of the SESDOC algorithms were plotted since there was limited information readily on SESDOC variables such as ship volume, complement breakdown (number of CPOs, etc.), and installed kW.