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
When a vessel is in any doubt as to whether such a situation exists she shall（）that it does exist and act accordingly.
When one upbound vessel is overtaking another vessel and both are pushing a tow ahead，what reaction may you expect（）.
Under what condition are you allowed to depart from the rules of the road（）.
Which display indicates a vessel conducting mineclearance operations（）.
When taking action to avoid collision，you should（）.
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 NOT to be regarded as restricted in her ability to maneuver（）.
You see a vessel carrying a black diamond which indicates a（）.
When ship at anchor she shall be deemed to be（）.
Underway at night，a vessel displaying the lights shown is（）.