Giddings and Wermter 



MAXIMUM ROLL ANGLE 2' 

 WATER LEVEL 



80- 



.0229 



0.2 0.3 0.4 



MODEL ROLL FREQ IN CPS 



.0459 .0688 .0918 



SHIP ROLL FREQ IN CPS 



.1147 



Fig. 22 - Phase lag of tank 

 moment relative to roll for 

 3, 4, and 5 foot water levels 

 at 2 degrees roll amplitude 



.1376 



TIME IN SECONDS 

 Fig. 23 - Comparison of stabilized and unstabilized roll 



774 



