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
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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
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For a floating vessel，the result of subtracting KG from KM is the（）.
What should you apply to a fathometer reading to determine the depth of water?（）
During cargo operations，your vessel develops a list due to the center of gravity rising above the transverse metacenter. To correct the list，you should（）.
As the displacement of a vessel increases，the detrimental effect of free surface（）.
The volume of watertight spaces of a vessel above its waterline is the vessel’s（）.
The term that indicates how many tons of cargo a vessel can carry is（）.
Aboard a vessel，dividing the sum of the longitudinal moments by the total weight yields the vessel’s（）.
The upward pressure of displaced water is called（）.
To calculate the free surface correction，it is necessary to divide the free-surface moments by the（）.
A moment is obtained by multiplying a force by its（）.