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
您可能感興趣的試卷
你可能感興趣的試題
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
A.The construction of the vessel
B.The experience of the vessel's crew
C.The location of vessels detected by radar
D.All of the above
A.The distance of visibility
B.1/2 the distance of visibility
C.A distance appropriate to the existing circumstances and conditions
D.The distance that it would require for the propeller to go from full ahead to full astern
A.to give/keep
B.giving/keeping
C.giving/keep
D.to give/keeping
最新試題
When shall the stand-on vessel in a crossing situation take action to avoid the other vessel（）.
When taking action to avoid collision，you should（）.
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 vessel is NOT to be regarded as restricted in her ability to maneuver（）.
When a vessel is in any doubt as to whether such a situation exists she shall（）that it does exist and act accordingly.
Your vessel is not underway when（）.
You are approaching another vessel and will pass starboard to starboard without danger if no course changes are made.You should（）.
When one of two vessels（）is required to keep out of the way the other must keep her course and speed.
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 （）.
Which statement is TRUE，according to the Rules（）.