A.Triangular
B.Diamond
C.Circular
D.Octagonal
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A.the centerline of a navigable channel
B.the starboard side of a channel
C.a prominent object of navigational interest that has no lateral significance
D.area of a channel where passing another vessel is permitted
A.two towing lights in a vertical line
B.a towing light in a vertical line above the sternlight
C.two towing lights in addition to the sternlight
D.a small white light in lieu of the sternlight
A.a vessel restricted in her ability to maneuver
B.a vessel under command
C.a passenger ship
D.a seaplane on the water
A.three masthead lights in a vertical line instead of either the forward or after masthead light
B.two masthead lights in a vertical line instead of either the forward or after masthead lights
C.two towing lights in a vertical line at the stern
D.a small white light aft of the funnel
A.immediately stop
B.immediately maneuvering
C.immediately anchoring
D.immediately going astern
最新試題
Environmental loading consists of the forces caused by wind，waves，and（）.
A towing vessel 30 meters in length is pushing barges ahead. How many white masthead lights is the vessel REQUIRED to show at night?（）
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?（）
Navigation lights must be displayed in all weathers from sunset to sunrise. They also（）.
By night，you sight the lights of a vessel engaged in underwater operations. If an obstruction exists on the port side of the vessel，it will be marked by（）.
A towing light，according to the Rules，is a（）.
Lighted information markers show（）.
A red triangular daymark marks（）.
A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show （）.
A triangular daymark would be colored（）.