单项选择题

The difference between the forward and aft drafts is（）.

A.list
B.heel
C.trim
D.flotation

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单项选择题

The center of flotation of a vessel is the point in the waterplane（）.

A.about which the vessel lists and trims
B.which coincides with the center of buoyancy
C.which，in the absence of external forces，is always vertically aligned with the center of gravity
D.which is shown in the hydrostatic tables as VCB

单项选择题

The angular motion of a ship in the athwartship is termed（）.

A.pitching
B.yawing
C.rolling
D.tracking