Application of Wavemaking Resistance Theory 



with -0.08 < ^ < and < ^ < l , where -q is the nondimensional distance from 

 the central plane as normalized by the local offsets of o -surface. 



The afterbody has been chosen as the mirror image of the forebody. This 

 model is denoted as Model 4996. 



.20 .25 .30 .35 



Fig. 14 - Theoretical C^ curve of Model 4996 



The theoretical C^ curve for this design is given in Fig. 14 and the body 

 plan and water line endings are shown in Fig. 15. Due to certain limitations in 

 the second computer program, we cannot obtain a true flat bottom. Some hand 

 fairing is necessary at the present time. However, such fairing is limited to 

 the bottom portion of a model only. In the case of Model 4996 as shown in Fig. 

 15, such fairing is done below the 0.3' W.L, An effort is being made to eliminate 

 this shortcoming in the computer program. 



Model 4996 has a B/H ratio of 2.64, a L/B ratio of 5.82, A/(L/100)3 ratio of 

 172.2, These proportions are very desirable, especially the large displacement- 

 length ratio which has a large influence on the per ton construction cost. The 

 experimental result of Model 4996 is anxiously awaited. 



1133 



