Data for Ships of Minimum Resistance 



AREA CURVE FOR OPTIMUM SYMMETRIC SHIP 

 GAMMAO = 5.00 H/L - 0.0500 B/H = 2.64 



OPTIMUM SYMMETRIC SHIP 



CSUBB - 0.455 



CSUBV : 0.003 



CSUBP = 0.613 



CSUBX = 0.743 



CSUBF - 0.00190 



CR-MIC = 0.62654E-03 



CR-VIS - 0.I2454E -01 



CR-TOT= 0.I308OE-OI 



LINES DRAWING OF OPTIMUM SYMMETRIC SHIP 

 Figure 2 



coefficient R^/y2pSv^ although convenient for working up model data, has several 

 obvious disadvantages as a figure of merit for comparing different hull shapes. 



Of the available standards of comparison, the two which have been used here 

 are Taylor's Standard Series and Series 60. The "equivalent" hull in each case 

 has been taken as the one with the same prismatic and volumetric coefficients 

 and the same ratio b/h. Other geometric parameters such as WL and the block 

 coefficient cannot be kept constant in this comparison. Furthermore, an equiv- 

 alent hull for the ship with prescribed afterbody did not seem to be available in 

 Series 60. Table 1 below gives various geometric parameters for the two opti- 

 mum hulls and the equivalent ones. The sources of data for Taylor's Standard 

 Series have been Gertler (1954) and for Series 60 have been Todd (1963). 



There is a second method by which a comparison can be made with Taylor's 

 Standard Series. One can try to carry out within the series the same minimiza- 

 tion problem as was formulated for the symmetric ships, i.e., with c^ = 0.003 

 and L/H = 20 fixed, one can look for a Taylor-Standard-Series hull which 



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