«h 



J^ 











SERIES 



60 



Cb « 



0.70 























MODEL 4280 

 MODEL 4281 

 MODEL 4282 



60 % DISPLACEMENT 













PARENT FORM 

















— - 















1.50 











































[. 







r- 





_^ 



















1.30 



eh 









" 



^~^- 





^^ 





'^^'^ 



- 



- . 











1.20 













— 



, 















■— 











1.10 



































~ 







- 









1.10 













, 



^ ' 





— - 



. 

















^zr- 



==- 



1.00 

 0.90 

 0.70 



■ 









■= " 



"" ' 



















« 



•r 































































. 







=^^ 



^^ 



60 



























~ ~ 





























^P 







0.80 













= 



— 





- 







. 





- 









C.70 























~~ 





— 





^^;^ 



^ 



0.60 





Jt 

















































40 





^T 



















— ' 



1 



=^-1 

















— - 







— 





— 



- 



0.30 





















=^=*°^ 



^"^ 



_^ 





^^^ 



-' 















, 





















— 





0.10 













— — ' 













t 

























































10 



12 



14 



16 



18 



SPEED IN KNOTS 

 Figure 69 — Comparison of Coefficient Curves 



XI-14 



