A.engaged on pilotage duty
B.in distress
C.at anchor
D.being overtaken in a narrow channel
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A.a vessel meeting another head-on
B.a vessel overtaking another in a narrow channel
C.a vessel crossing the course of another
D.the give-way vessel in a crossing situation
A.power-driven vessel following a traffic lane
B.pilot vessel enroute to a pilot station
C.law enforcement vessel
D.All of the above
A.stand-on vessel and would sound two short blasts
B.give-way vessel and would sound no whistle signal
C.stand-on vessel and would sound no whistle signal
D.give-way vessel and would sound two prolonged blasts followed by two short blasts
A.two all-round red lights in a vertical line
B.two yellow towing lights in a vertical line
C.two white masthead lights in a vertical line
D.two lights on the stern，one yellow and one white
A.Three short blasts
B.A long blast
C.A prolonged blast
D.No signal is required
最新試題
A vessel displaying three red lights in a vertical line is（）.
A 20-meter power-driven vessel pushing ahead or towing alongside will display（）.
Systems of inbound and outbound lanes to promote the safe flow of vessel traffic in certain areas around the world are known as（）.
Traffic separation schemes established by the International Maritime Organization（）.
A sailing vessel shall not impede the safe passage of a（）.
A vessel restricted in her ability to maneuver when engaged in an operation for the maintenance of safety of navigation in a traffic separation scheme is（）complying with this rule to the extent necessary to carry out the operation.
A vessel not using a traffic separation scheme shall avoid it by as wide a（）as is practicable.
A whistle signal of one prolonged，one short，one prolonged and one short blast，is sounded by a vessel（）.
A signal of one prolonged，one short，one prolonged，and one short blast，in that order is given by a vessel（）.
A vessel using a traffic separation scheme shall（）.