單項選擇題

In towing，heaving lines are used for（）.

A.passing a tow bridle to the tug
B.passing a messenger line
C.heaving in the tow bridle
D.service lines with rocket line throwers

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單項選擇題

In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.

A.shock loading on the tow line is reduce
B.towing speed is improved
C.the vessel is more visible from the tug
D.the catenary of the tow line is reduced

單項選擇題

In order to back a right-handed，single-screw vessel in a straight line，you will probably need to use（）.

A.very little rudder
B.some left rudder
C.some right rudder
D.full left rudder

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In towing，heaving lines are used for（）.

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In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.

In order to back a right-handed，single-screw vessel in a straight line，you will probably need to use（）.

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In towing，heaving lines are used for（）.

In order to back a right-handed，single-screw vessel in a straight line，you will probably need to use（）.