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
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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
A.making headway
B.making no headway
C.moored to a buoy
D.at anchor
最新試題
A safe water daymark has what shape? （）
An all-round flashing yellow light may be exhibited by a(n)（）.
A vessel being towed astern，where the length of the tow exceeds 200 meters，will exhibit （）.
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 is a yellow light having the same characteristics as a(n)（）
An occulting light is one in which（）.
A vessel towing is showing three forward white masthead lights in a vertical line. This means that the length of the（）.
At sea，you are approaching a small vessel and see that it has the signal flag P hoisted. What should you do?（）.
According to the Rules，when should lights be displayed?（）.
A vessel towing where the tow prevents her from changing course shall carry（）.