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
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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
A.making headway
B.making no headway
C.moored to a buoy
D.at anchor
A.Whether she is normally a fishing or a trawling vessel
B.Her gross tonnage
C.Her length
D.The type of gear she carries
最新試題
A power-driven vessel，when towing astern，shall show（）.
The prohibition against displaying lights which may be confused with required navigation lights applies（）.
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 red triangular daymark marks（）.
According to the Rules，when should lights be displayed?（）.
A vessel towing is showing three forward white masthead lights in a vertical line. This means that the length of the（）.
Entering from seaward，triangular-shaped daymarks are used to mark（）.
Environmental loading consists of the forces caused by wind，waves，and（）.
An all-round flashing yellow light may be exhibited by a(n)（）.
Approaching an anchorage in fog，you hear one short，one prolonged，and one short blast in that sequence on a ship’s whistle． This indicates（）.