Sharma 



The test cut was a height record for a nondimensional model length L = 20 (cor- 

 responds to F^ = 0.2236) at transverse location y = 8,01 in a tank of width b = 

 90, taken in 250 equal steps from x = -100 to +25. The theoretical heights were 

 computed by Dr. Klaus Eggers of the Institut fur Schiffbau der Universitat Ham- 

 burg by the usual linearized theory including all local effects and with a speci- 

 fied absolute error limit of ±0.0005. The data as used by the author are repro- 

 duced in Table 3. 



Table 3 

 List of Computed ^ (xlO^*) Values for Inuid S-201 

 (Parameters: y^ = 10, b = 90, y = 8.01; Variable, 

 X = 25 stepped -0.5 until -100) 



The amplitude spectra obtained from an analysis of this theoretical wave 

 profile for two different lengths of run (terminating at -x = 50.5 and 100.0) each 

 time with truncation correction are shown in Fig. 3 (open and solid dots re- 

 spectively), where the continuous curve represents the exact theoretical value 

 taken from Fig. 8 in Ref. 4. In the case of the longer run the amplitudes ob- 

 tained without truncation correction are also displayed as the third set of points 

 (crosses) in Fig, 3. The corresponding values of wave resistance are as fol- 

 lows: theory, 0.1165; long run, 0.1109 with and 0.0980 without truncation cor- 

 rection; and short run, 0.0964 with and 0.0800 without truncation correction. 



744 



