A.true north
B.magnetic north
C.the vessel's beam
D.the vessel's head
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A.white light whose characteristic is Morse (A)
B.group-occulting white light
C.composite group-flashing (2 + 1) white light
D.composite group-flashing (2 + 1) red or green light
A.lettered
B.spherical
C.showing a white light
D.All of the above
A.the equator
B.a great circle
C.a small circle
D.a meridian
A.the equator
B.a loxodromic curve
C.a small circle
D.a meridian
A.Great circle
B.Equator
C.Small circle
D.Meridian
最新試題
Buoys which mark dredging areas are painted（）.
A white buoy with a blue band is（）.
A rock and sand structure extending from the bank of the river toward the channel is known as a（）.
A white buoy with an open-faced orange diamond on it indicates（）.
A mid-channel buoy，if lighted，will show a（）.
A preferred-channel buoy may be（）.
An orange and white buoy with a rectangle on it displays（）.
A preferred-channel buoy will show a（）.
A spherical buoy may be（）.
Fishing stake，the position of which frequently（），exist in the area covered by this chart.