A.need not show the lights for a vessel engaged in towing，if it is impractical to do so
B.may show the lights for a vessel not under command
C.must show a yellow light above the stern light
D.must show the lights for a vessel towing
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A.fishing
B.in distress
C.at anchor
D.not under command
A.engaged in piloting
B.towing astern
C.engaged in fishing
D.in distress
A.avoid cross
B.avoid to cross
C.avoid crossly
D.avoid crossing
A.Sound one blast of the whistle
B.Alter course to starboard
C.Construct a radar plot
D.Sound the danger signal
A.a tugboat
B.a sailing vessel
C.a power-driven vessel
D.a vessel propelled by machinery and under sail
最新試題
Which statement correctly applies to a situation where a sailing vessel is overtaking a power-driven vessel（）.
Which vessel is NOT classified as “restricted in her ability to maneuver” （）.
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,（）.
Which statement is TRUE，according to the Rules（）.
When underway in a channel，you should if safe and practicable（）.
You are underway and approaching a bend in the channel where vessels approaching from the opposite direction cannot be seen．You should sound（）.
You hear the fog signal of another vessel forward of your beam.Risk of collision may exist.You MUST（）.
When underway in a channel，you should keep to the（）.
Which vessel is NOT to be regarded as restricted in her ability to maneuver（）.