Unstable Motion of Free Spar Buoys in Waves 



15— 



10__ 



f (H; 



HALF AMPLITUDE OF ROLLING VS FREQUENCY ( Sw = 0.340 m; 



$A 



HALF AMPLITUDE OF ROLLING VS HALF AMPLITUDE OF WAVES 



(f = 0.240 Hz) 



FIGURE 8 

 ROLLING OF TYPE 14 BUOY IN REGULAR WAVES 



1019 



