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

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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

單項選擇題

In order for a vessel to be engaged in fishing she must be（）.

A.underway
B.using gear which extends more than 50 meters outboard
C.using a seine of some type
D.using gear which restricts her maneuverability

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

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

In order for a vessel to be engaged in fishing she must be（）.

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