[单选题]

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

参考答案与解析：

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