A.Two masthead lights
B.One masthead light and a sidelight
C.Both sidelights
D.Stern light only
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A.Each vessel should show sidelights
B.Each vessel should show at least one white light
C.The barges should be lighted as separate units
D.The barges should be lighted as one vessel
A.Radiation fog
B.Frontal fog
C.Convection fog
D.Advection fog
A.One to another
B.One the other
C.Each the other
D.Each other
A.Situations when you can see vessels on radar that you cannot see visually
B.Visibility of less than half a mile
C.Any condition where visibility is restricted
D.Visibility where you cannot see shore
A.a blast of from five to seven seconds' duration
B.a blast of from five to six seconds' duration
C.a blast of from four to six seconds' duration
D.a blast of from six to seven seconds' duration
最新試題
You see a vessel displaying three lights in a vertical line.The highest and lowest lights are red and the middle light is white.She is also showing a white light at the stern，which is lower than the forward light.It could be a（）.
When two vessels are in sight of one another and NOT in or near an area of restricted visibility，any of the following signals may be given EXCEPT（）.
When a vessel is in any doubt as to whether such a situation exists she shall（）that it does exist and act accordingly.
You are underway in reduced visibility.You hear the fog signal of another vessel about 20° on your starboard bow.Risk of collision may exist.You should（）.
Vessel engaged in the launching or recovery of aircraft is called（）．
Your vessel is NOT making way，but is not in any way disabled.Another vessel is approaching you on your starboard beam.Which statement is TRUE（）.
Which vessel is the stand-on vessel when two vessels crossing in fog are NOT in sight of one another（）.
When ship at anchor she shall be deemed to be（）.
When one of two vessels（）is required to keep out of the way the other must keep her course and speed.
You are approaching another vessel and will pass starboard to starboard without danger if no course changes are made.You should（）.