Horizontal fore or aft motion of a vessel is known as（）.

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

单项选择题For a ship with longitudinal inclination，an increase in GML causes（）.

A.list to stabilize at an angle of loll
B.trim to stabilize at an angle of loll
C.trim to increase
D.trim to decrease

单项选择题During counterflooding to correct a severe list or trim aggravated by an off-center load，a ship suddenly takes a list or trim to the opposite side. You should（）.

A.continue counterflooding in the same direction
B.continue counterflooding，but in the opposite direction
C.immediately stop counterflooding
D.deballast from the low side