单项选择题
On a twin-screw，twin-rudder vessel，the most effective way to turn in your own water，with no way on，is to put（）.
A.one engine ahead and one engine astern，with full rudder
B.one engine ahead and one engine astern，with rudders amidships
C.both engines ahead，with full rudder
D.both engines astern，with full rudder
相关考题
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单项选择题
On a single-screw vessel the stern frame（）.
A.furnishes support to the rudder，propeller shaft，and transom frame
B.provides foundations for after mooring winches
C.provides foundations for the main propulsion engines
D.transfers the driving force of the propeller to the hull -
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 -
单项选择题
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
D.shift the weight to the stern
