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單項選擇題

The geometric center of the waterplane area is called the（）.

A.center of buoyancy
B.center of gravity
C.metacenter
D.center of flotation

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單項選擇題

Semisubmersibles A and B are identical. However，A is more tender than B. This means that A relative to B has a（）.

A.lower KG
B.smaller GM
C.smaller roll angle
D.larger GZ

單項選擇題

If the cause of severe list or trim is off-center ballast，counterflooding into empty tanks will（）.

A.increase the righting moment
B.increase the righting arm
C.increase list or trim
D.decrease list or trim

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