Giddings and Wermter 



180 



160 



140 



120 



100 



LEGEND 



O 3.5 FCX)T WATER HEIGHT 



^ 4.5 FOOT WATER HEIGHT 



□ 5.5 FOOT WATER HEIGHT 



;S 80 



M 



60 



40 



20 



0.100 



0.0224 



0.200 0.300 0.400 0.500 0.600 



Model Roll Frequency In cycles per second 

 0.0447 0.0671 0.0895 0.1119 0.1342 



Ship Roll Frequency in cycles per second 



Fig. 18 - Variation of phase angle between nnoment and roll 

 angle with roll frequency for three different water depths 



770 



