- 











Tow Force correspon 

 12 knots in still wa 

 Tow Force correspon 

 6 knots in still wo 



ding to 



- 



ding to 



- 

























- 



















- 



~ v 



\ 











x/h=20 





- 





5 



















i i 





i 





i 



i 



i 



Figure 3a - \/h = 20 



160 200 240 

 Wavelength in feet 



Tow Force corresponding to 

 12 knots in still water 



Tow Force corresponding to 

 6 knots in still water 



A/h'30 



Figure 3b - \/h = 30 



160 200 240 

 Wavelength in feet 



- 











Tow Force corres 

 12 knots in stil 

 Tow Force corre. 



ponding to 



ponding to 



- 









V 













- 















X/h=40 





- 





\ 



\ 















- 







K -- 









l «* 





X 









- 



















Figure 3c - \/h = 40 



40 80 120 160 200 240 280 320 360 



Wavelength in feet 



Figure 3 - Reduction of Speed with Constant Tow Force and Wavelength/Waveheight Ratio 



Length of ship equal to 170 feet. 



