单项选择题

A vessel showing a green light over a white light in a vertical line above the level of the sidelights is（）.

A.engaged in underwater construction
B.under sail and power
C.a pilot vessel
D.trawling

相关考题

A vessel servicing a pipeline during the day shall disp...

单项选择题A vessel servicing a pipeline during the day shall display（）.

A.three black shapes in a vertical line; the highest and lowest are balls，and the middle one is a diamond
B.three shapes in a vertical line; the highest and lowest are red balls，and the middle one is a white diamond
C.three black balls in a vertical line
D.two black balls in a vertical line

A vessel sailing shall keep out of the way of all of th...

单项选择题A vessel sailing shall keep out of the way of all of the following vessels except a vessel （）.

A.not under command
B.engaged on pilotage duty
C.restricted in her ability to maneuver
D.engaged in fishing

A vessel or object being towed astern shall display a(n...

单项选择题A vessel or object being towed astern shall display a(n)（）.

A.forward masthead light
B.after masthead light
C.stern light
D.All of the above

救助合同与救助公约

A vessel showing a green light over a white light in a vertical line above the level of the sidelights is（）.