单项选择题
A vessel sounding a fog signal of one short，one prolonged，and one short blast is indicating that the vessel is（）.
A.fishing
B.in distress
C.at anchor
D.not under command
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相关考题
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单项选择题
A vessel showing a yellow light over a white light at night is a vessel（）.
A.engaged in piloting
B.towing astern
C.engaged in fishing
D.in distress -
单项选择题
A vessel shall，so far as practicable，（）traffic lanes.
A.avoid cross
B.avoid to cross
C.avoid crossly
D.avoid crossing -
单项选择题
A vessel is approaching from dead ahead.Both of her sidelights are visible and her range lights are in line.Which of the following could you do first（）.
A.Sound one blast of the whistle
B.Alter course to starboard
C.Construct a radar plot
D.Sound the danger signal
