A.fixed red light
B.flashing light
C.white light
D.occulting light
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A.directions
B.dangers
C.exclusion areas
D.All of the above
A.danger
B.vessels are excluded from the area
C.the buoy is a mooring buoy
D.operating restrictions are in effect
A.an isolated danger mark
B.a hydrographic data collection buoy
C.a mooring buoy
D.marking a restricted area
A.submerged rock，not dangerous to navigation
B.sunken wreck，not dangerous to navigation
C.towed-under buoy
D.All of the above
A.underway
B.making way
C.dead in the water
D.a power driven vessel
最新試題
A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH OR WEST FROM A FIXED POINT，E.G. A WRECK is（）.
A rock and sand structure extending from the bank of the river toward the channel is known as a（）.
A nun buoy will（）.
A spherical buoy may be（）.
A yellow buoy may exhibit a(n)（）.
How is the intensity of a light expressed in the Light Lists?（）.
Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? （）
A parallel of latitude other than the equator is a（）.
A relative bearing is always measured from（）.
A V-shaped ripple with the point of the V pointing upstream in a river may indicate a（）.