A.yellow lights at each end
B.two red lights in a vertical line
C.a black ball
D.a diamond shape
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A.vessel not under command
B.air cushion vessel in the nondisplacement mode
C.vessel towing a submerged object
D.vessel engaged in diving operations
A.underway or making way
B.under sail or under tow
C.anchored or aground
D.not under command or restricted in her ability to maneuver
A.During the hours of darkness
B.At all times when underway
C.From sunset to sunrise and restricted visibility
D.Sunrise to sunset
A.only the lights for a vessel towing
B.only the lights for a vessel restricted in her ability to maneuver
C.the lights for a towing vessel and the lights for a vessel restricted in her ability to maneuver
D.the lights for a towing vessel and the lights for a vessel not under command
A.towing vessel is less than 50 meters
B.towing vessel is greater than 50 meters
C.tow is less than 200 meters
D.tow is greater than 200 meters
最新試題
An inconspicuous，partly submerged vessel or object being towed，where the length of tow is 100 meters，shall show（）.
A power-driven vessel underway shall keep out of the way of（）.
The prohibition against displaying lights which may be confused with required navigation lights applies（）.
If your vessel were proceeding down river (descending)，a green square marker with a green reflector border on the right bank would be a（）.
A tug is towing three manned barges in line in fog. The first vessel of the tow should sound （）.
A vessel is fishing at anchor on the high seas. Which of the following day signals should she display if she has gear extending out over 150 meters horizontally from the vessel?（）.
A towing light，according to the Rules，is a（）.
Daymarks marking the starboard side of the channel when going towards the sea are（）.
Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?（）
All fog signals shall be sounded every two minutes with the exception of a vessel（）.