Uram and Numata 



20 30 40 



SHIP SPEED, KNOTS 



Fig. 10 - Effective horsepower comparison calm water 



other ships; the conventional destroyer is next best, followed by the Semi- 

 Submerged Ship and the Large Bulb Ship, in that order. The Shark Form would 

 be higher than all of the ships over the entire speed range. 



Figures 11 and 12 present an EHP comparison in regular waves. As in 

 calm water, the Hydrofoil Semi -Submarine shows to best advantage at speeds 



728 



