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單項選擇題

A twin-screw ship going ahead on the otarboard screw only tends to move（）.

A.in a straight line
B.to port
C.from side to side
D.to starboard

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單項選擇題

A vessel moored with two anchors,sometimes, at an exposed roadstead to（）.

A.aid turing the ship
B.obtain a fine bearing
C.increase ship swing to wind or tide
D.lighten the stress of anchor chains

單項選擇題

A vessel’s bottom will be subjected to tension when weight is concentrated（）.

A.amidships
B.aft
C.at both ends of the vesel
D.forward