单项选择题
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 sailing vessel shall not impede the safe passage of a...
单项选择题A sailing vessel shall not impede the safe passage of a（）.
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 sailing vessel is overtaking a power-driven vessel in...
单项选择题A sailing vessel is overtaking a power-driven vessel in a narrow channel，so as to pass on the power-driven vessel’s port side. The overtaken vessel will have to move to facilitate passage. The sailing vessel is the（）.
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 power-driven vessel pushing aheador towing alongside ...
单项选择题A power-driven vessel pushing aheador towing alongside displays navigation lights and（）.
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
