A.negative GM
B.progressive flooding
C.structural failure
D.an immediate need to ballast
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A.center of gravity
B.center of buoyancy
C.center of flotation
D.metacenter
A.increase the trim
B.change the free surface effect
C.cause a serious list
D.decrease ship stability
A. dividing the total longitudinal moment summation by displacement
B.dividing the total vertical moment summation by displacement
C.multiplying the MT1 by the longitudinal moments
D.subtracting LCF from LCB
A.metacentric height
B.mean draft
C.moment to trim one inch
D.deadweight
A.lower than the center of gravity
B.at the same height as the center of gravity
C.higher than the baseline
D.on the longitudinal centerline
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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 vessel trimmed by the stern has a（）.
A serious loss of reserve buoyancy resulting from flooding any compartment of a ship will always（）.
A wind has caused a difference between drafts starboard and port. This difference is（）.
A continual worsening of the list or trim indicates（）.
Deballasting a double bottom has what affect on KG?（）.
A continual worsening of the list or trim indicates（）.
All of the following can be determined by use of a stabilogauge EXCEPT（）.
A ship is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is（）.
The height of the metacenter above the keel will vary depending on the（）.