A.only when there is positive stability
B.only when there is negative stability
C.only when there is neutral stability
D.at all times
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A.height of the metacenter
B.height of the righting arm
C.height of the center of buoyancy
D.metacentric height
A.list to stabilize at an angle of loll
B.list to decrease
C.trim to decrease
D.list to increase
A.positive stability
B.negative stability
C.neutral stability
D.maximum stability
A.is found in the hydrostatic tables for a level vessel
B.multiplied by the displacement yields the righting moment
C.is always positive
D.is calculated by subtracting KG from KM
A.center of gravity
B.center of flotation
C.metacenter
D.metacentric height
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（）refers to the tendency of a body of the ship to return to its original position after it is displaced therefrom.
A wind has caused a difference between drafts starboard and port. This difference is（）.
A vessel with a large GM will（）.
If the cause of severe list or trim is off-center ballast，counterflooding into empty tanks will（）.
The geometric center of the waterplane area is called the（）.
For a ship with longitudinal inclination，an increase in GML causes（）.
A continual worsening of the list or trim indicates（）.
Deballasting a double bottom has what affect on KG?（）.
A floating vessel will behave as if all of its weight is acting downward through the（）.
Semisubmersibles A and B are identical. However，A is more tender than B. This means that A relative to B has a（）.