单项选择题If a vessel takes a sudden,severe list or trim from an unknown cause,you should FIRST().

A.determine the cause before taking countermeasures
B.assume the shift is due to off-center loading
C.counterflood
D.assume the cause is environmental forces


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1.单项选择题If a vessel lists to port,the center of buoyancy will().

A.move to port
B.move to starboard
C.move directly down
D.stay in the same position

2.单项选择题Horizontal transverse motion of a vessel is known as().

A.pitch
B.surge
C.sway
D.heave

3.单项选择题Horizontal fore or aft motion of a vessel is known as().

A.pitch
B.surge
C.sway
D.roll

4.单项选择题Heave is motion along the().

A.longitudinal axis
B.transverse axis
C.vertical axis
D.centerline axis

5.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

7.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

8.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

9.单项选择题Broken stowage must be reduced to().

A.the minimum
B.to little amount
C.the maximum
D.to great amount

10.单项选择题Bilge keels are more effective at dampening rolls as the().

A.pitching increases
B.list increases
C.rolling increases
D.draft decreases