单项选择题

In selecting a tug for moving a vessel，consideration should be given to its（）.

A.indicated horsepower，bollard pull，and displacement
B.indicated horsepower，maneuverability，and displacement
C.indicated horsepower，bollard pull，and maneuverability
D.bollard pull，displacement，and maneuverability

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In order to reduce your wake in a narrow channel you should（）.

A.apply enough rudder to counter the effect of the current
B.change your course to a zigzag course
C.reduce your speed
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In most cases，when a large merchant vessel enters shallow water at high speed the（）.

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If the situation arose where it became necessary to tow a disabled vessel，which statement is TRUE concerning the towing line?（）.

A.The towing line between the two vessels should be clear of the water
B.The towing line should be taut at all times between the vessels
C.There should be a catenary so the line dips into the water
D.None of the above