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
An orange and white buoy with a rectangle on it displays（）.
Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? （）
Fishing stake，the position of which frequently（），exist in the area covered by this chart.
A plane that cuts the Earth’s surface and passes through the poles will always form（）.
A preferred-channel buoy will show a（）.
An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol? （）
A relative bearing is always measured from（）.
A special purpose buoy shall be（）.
An orange and white buoy marking a danger area will have what symbol on it?（）
How is the intensity of a light expressed in the Light Lists?（）.