單項(xiàng)選擇題

While moving ahead，a twin-screw ship has an advantage over a single-screw ship because （）.

A.correct trim will be obtained more easily
B.drag effect will be cancelled out
C.side forces will be eliminated
D.speed will be increased

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單項(xiàng)選擇題

When towing astern，one way to reduce yawing of the tow is to（）.

A.trim the tow by the stern
B.trim the tow by the head
C.have the tow on an even keel
D.list the tow on the side it is yawing

單項(xiàng)選擇題

When a vessel navigates in an area with a small underkeel clearance but with adequate space to take avoiding action she（）.

A.should not be regarded as a vessel constrained by her draught
B.should be regarded as a vessel constrained by her draught
C.shall be regarded as a vessel restricted in her ability to maneuver
D.should be regarded as a non-displacement vessel

While moving ahead，a twin-screw ship has an advantage over a single-screw ship because （）.

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When towing astern，one way to reduce yawing of the tow is to（）.

When a vessel navigates in an area with a small underkeel clearance but with adequate space to take avoiding action she（）.

While moving ahead，a twin-screw ship has an advantage over a single-screw ship because （）.

When towing astern，one way to reduce yawing of the tow is to（）.