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
Vessel engaged in the launching or recovery of aircraft is called（）．
When underway in a channel，you should keep to the（）.
Which statement correctly applies to a situation where a sailing vessel is overtaking a power-driven vessel（）.
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 （）.
When one of two vessels（）is required to keep out of the way the other must keep her course and speed.
When you doubt the existence of risk of collision,（）.
You hear the fog signal of another vessel forward of your beam.Risk of collision may exist.You MUST（）.
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（）.
You are on a vessel that cannot comply with the spacing requirement for masthead lights.What is required in this situation（）.
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（）.