单项选择题
A change of trim may be simply defined as（）.
A.the change in difference between the forward and aft drafts
B.the sum of free communication，free surface and pocketing
C.the moment of inertia of the ship's waterline plane about the athwartship axis
D.rolling and listing
点击查看答案&解析
相关考题
-
单项选择题
A neutral equilibrium position for a vessel means that the metacenter is（）.
A.lower than the keel
B.at the same height as the center of gravity
C.exactly at midships
D.at the center of the waterplane area
