00030 

 0,0025 

 0.0020 

 0.0015 

 0.0010 

 0.0005 









































/ 





























1 



























\ 



I 





























\ 



\ 

























/ 





\ 























y 



/ 





\ 



^ 



^A 







^ 



o. 



"S 









^ 







0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 I.I 1.2 1.3 



FREQUENCY IN RADIANS PER SECOND 



.4 1.5 1.6 



Figure 7 - Power Density Spectrum of Heave Acceleration for Condition 1 

 in a Head State 4 Sea 



Figure 8 - Power Density Spectrum of Surge Acceleration for Condition 1 

 in a Head State 4 Sea 



■13- 



