A New Appraisal of Strip Theory 



kh„ 



1.6 

 1.4 

 1.2 

 1.0 



0.81— 

 0.6 

 0.4 

 0.2 

 OO 



0.6 0.9 



1.2 

 X/L 



+150 

 + 100 

 + 50 S 



UJ 



S 



Q 



- 50 

 -100 

 -ISO 



1.5 



1.8 



1.6 



1.4 



1.2 



1.0 



^0.8 

 kho 



0.6 

 0.4 

 0.2 

 0.0 



+150 

 + 100 

 + 5oS 



UJ 



cc 

 ^ 



bJ 

 Q 



-100 

 -150 



0.6 



0.9 



1.2 

 X/L 



1.5 



1.8 



Fig. 12 - Model B in directly ahead seas, pitching 

 non-dimensional amplitude and phase angle vs 

 wavelength to shiplength ratio 



269 



