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單項(xiàng)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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單項(xiàng)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

單項(xiàng)選擇題

In ballasting to survival draft，while in transit，due to extreme wind and wave loads，thrusters or propulsion，if available，should be used to（）.

A.reduce windward mooring tensions
B.maintain vessel heading
C.maximize accelerations
D.increase speed of advance