While underway in thick fog you are on watch and hear the cry“man overboard”.Which type of maneuver should you make（）.

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  A . middle of the channel B . starboard side of the channel C . port side of the channel D . side of the channel that has the widest tur

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• When navigating in thick fog with the radar on，you should（）.

  A . station the look-out in the wheelhouse to keep a continuous watch on the radar B . secure the sounding of fog signals until a vessel closes within five miles C . station a look-out as low down and far forward as possible D . keep the radar on the shortest available range for early detection of approaching vessel

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• If your radiotelephone fails while underway,（）.

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• You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.

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• When underway in a channel，you should if safe and practicable（）.

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• You are underway in thick fog.You have not determined if risk of collision exists.Which statement is true?（）

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