A.Radiation fog
B.Frontal fog
C.Convection fog
D.Advection fog
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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
A.Whenever two vessels approach from opposite directions
B.If the bearing of an approaching vessel does not appreciably change
C.Whenever a vessel crosses ahead of the intended track of another vessel
D.If one vessel approaches another so as to be overtaking
A.not be regarded as a vessel
B.in general，keep well clear of all vessels
C.proceed at a slower speed than surrounding vessels
D.when making way，show the lights for a vessel not under command
最新試題
Vessels should maintain a sharp lookout，especially during December through March，when navigating the right whale’s only known calving grounds which lie off the coasts of（）.
Which display indicates a vessel conducting mineclearance operations（）.
When taking action to avoid collision，you should（）.
You are Master of a towing vessel engaged in towing three barges astern.The middle barge of the tow would be required to sound which of the following during restricted visibility （）.
You are on a vessel that cannot comply with the spacing requirement for masthead lights.What is required in this situation（）.
Underway at night，a vessel displaying the lights shown is（）.
Which one of the following rules is not regarding two power-driven vessels meeting end or nearly end on so as to involve risk of collision（）.
When one of two vessels（）is required to keep out of the way the other must keep her course and speed.
When one upbound vessel is overtaking another vessel and both are pushing a tow ahead，what reaction may you expect（）.
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（）.