FIGURES (Continued) 



Page 



19. Amplitude of the peak value of the steepness of the divergent waves 

 in the Kelvin wake for a simple ship bow form, with 3 = 12° and 



Y = 45° in the zeroth-order slender-ship approximation 16 



20. The Kelvin cusp line, the line along which the amplitude of the 

 divergent waves exhibits a peak, and the three lines along 

 which the steepness of the divergent waves is equal to 



1/20, 1/15 and 1/7 (chain line close to the track of 



the ship) for a simple ship bow form, with B = 12° 



and T = 45°, in the zeroth-order slender-ship 



approximation 16 



21. Lines along which the steepness of the divergent waves is equal to 

 1/20, 1/15 and 1/7 for a simple ship bow form, with 3 = 12° and 



y = 45°, in the Michell thin-ship approximation ( ) and the 



zeroth-order slender-ship approximation ( ) • 17 



22. Lines along vhich the cteepness of the divergent waves is equal to 

 1/15 for a simple ship bow form with B= 8°, 12°, 16° dnd 



Y = 45° (top) and r = 0, 25°, 45° and 6 = 12° (bottom) 



in the zeroth-order slender-ship approximation 17 



