>0O5 



•a 0.1 

 B 0.2 



■^ 0-5 

 I 1 



I ^ 



i 5 

 : 10 



£ 15 

 S 20 



^ 30 

 S 40 

 •2 50 

 I 60 

 > 70 



o 80 



R, 85 

 bi) 

 5 90 



&. 98 



























, 





Lower 95% Confidence Limit 

 Upper 95% Confidence Limit- 













•k ' 











1 / 























^ 



A 



^ 























^ 



'fi 



r 























//i 



/ 

























^ 























A 



























M 



























w 

























/ 

























J 



r 

























/ 



























/ 

























ii 



r 

























/ 





o Acceleration Down | | 











^ 

























^ 

























/ 

























/ 

























/ 



























020 i .040 j. 060 ; .100 i .200 , .400i.600 \ 1.00 



.030 .050 .080 .150 .300 .500 .800 



Heave Acceleration in g's. Double Amplitude 



Level 



~r 



0.3 0.5 



Acceleration in g's 

 Heave Acceleration 



0.7 



Z. 0.05 

 I 0., 

 S. 0.2 



.u 05 



•2 1 



o 20 

 (I 



O 30 



40 















1 



1 1 



^ 



1 









Lower 95% Confidence Limit- 

 Upper 95 % Confidence LimitN 



-t~l 



1 









j 



i ' 

























// 





























/ 



/>/ 































/ 



/ 































































































f 





























































































i 

































f 































i 

































J 





































o Rolling to Starboard | 









X 



4 

































f 































f 































/ 



























































"OIO : .020 ■ .040 ;.060 ; .100 ; .200 : .4001 

 .015 030 050 .080 .150 .300 .500 



Roll Acceleration 

 2 

 in radians per second , Double Amplitude 



ffl 800- 



^ 400- 



Rolling to Starboard 



2 3 4 5 



Level 



— 1 1 1 1 r- 



10 20 30 



Double Amplitude in degrees 



Roll Angle 



Fig. 19 USCGC Casco— Statistical Distribution Patterns of Ship Motions 



(Data were measured during March and April, 1951, in the North Atlantic.) 



30 



