单项选择题
Horizontal fore or aft motion of a vessel is known as（）.
A.pitch
B.surge
C.sway
D.roll
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单项选择题
Heave is motion along the（）.
A.longitudinal axis
B.transverse axis
C.vertical axis
D.centerline axis -
单项选择题
For a vessel with list，a decrease in GMT will cause the angle of inclination to（）.
A.stabilize at an angle of loll
B.decrease
C.increase
D.remain constant -
单项选择题
For a vessel inclined by the wind，multiplying the buoyant force by the horizontal distance between the lines of action of the buoyant and gravity forces gives the（）.
A.righting moment
B.vertical moment
C.longitudinal moment
D.transverse moment
