單項(xiàng)選擇題A vessel proceeding along a narrow channel shall（）.

A.avoid crossing the channel at right angles
B.not overtake any vessels within the channel
C.keep as near as safe and practicable to the limit of the channel on her starboard side
D.when nearing a bend in the channel，sound a long blast of the whistle


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1.單項(xiàng)選擇題A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream. Which vessel has the right of way? （）

A.The vessel moving upstream against the current
B.The vessel moving downstream with a following current
C.The vessel located more towards the channel centerline
D.The vessel with the least amount of maneuverability

2.單項(xiàng)選擇題A tug’s horsepower available at the shaft is（）.

A.indicated horsepower
B.brake horsepower
C.dynamic horsepower
D.net horsepower

4.單項(xiàng)選擇題A towboat has the same draft as the barges it is pushing ahead. If the distance from the stern of the towboat to the head of the tow is 260m，where is the approximate location of the pivot point of the unit?（）

A.At the head of the tow
B.75m from the head of the tow
C.120m from the head of the tow
D.180m from the head of the tow

5.單項(xiàng)選擇題A tow that veers to the side on the end of the towline is said to（）.

A.yaw
B.surge
C.sway
D.swing