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單項(xiàng)選擇題

The step of a pilot ladder which prevents the ladder from twisting is the （）.

A.Proof bar
B.Shifting bar
C.Long bar
D.Spreader

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單項(xiàng)選擇題

THE SPEED OF A VESSEL ADJUSTED TO THAT OF A PILOT BOAT AT WHICH THE PILOT CAN SAFELY EMBARK is （）.

A.Ground speed
B.Boarding speed
C.Relative speed
D.Speed of the vessel

單項(xiàng)選擇題

The single letter G，sent by an icebreaker to an assisted vessel，means （）.

A.I require a pilot
B.Longitude follows
C.I am going ahead; follow me
D.Do not follow me