單項選擇題In heavy weather you notice buckling in the midships deck plating of your vessel. To relieve the strain you could().

A.pump fuel oil from midships to the ends of the vessel
B.reduce speed
C.take a course which most eases the vessel
D.All of the above


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4.單項選擇題If a vessel is sagging,what kind of stress is placed on the sheer strake?()

A.Compression
B.Tension
C.Thrust
D.Racking

5.單項選擇題Frames to which the tank top and bottom shell are fastened are called().

A.floors
B.intercostals
C.stringers
D.tank top supports