单选题If your vessel has a GM of one foot and a breadth of 50 feet，what will be your full rolling period? （）A11 secondsB15 secondsC20 secondsD22 seconds
单选题
If your vessel has a GM of one foot and a breadth of 50 feet，what will be your full rolling period? （）
A
11 seconds
B
15 seconds
C
20 seconds
D
22 seconds
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