单项选择题
In reduced visibility，you hear two prolonged blasts of a whistle. This signal is sounded by a （）.
A.power-driven vessel dead in the water
B.sailing vessel on the port tack
C.vessel not under command
D.vessel fishing with nets
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相关考题
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单项选择题
In order to maintain speed while changing course from a close reach to a broad reach，the sails should be（）.
A.lowered
B.reefed
C.hauled in
D.eased out -
单项选择题
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 -
单项选择题
In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should（）.
A.stop your engines
B.sound the danger signal at two-minute intervals
C.hold course and speed until the other vessel is sighted
D.take avoiding action as soon as possible
