A.a junction with the preferred channel to the left
B.a sharp turn in the channel to the right
C.the starboard side of the channel
D.a wreck to be left on the vessel's port side
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A.are the same as their Light List number
B.are marked in 6 inch figures with retroreflective material
C.increase with the even numbers to starboard
D.decrease with the odd numbers to starboard
A.light characteristic
B.color of the uppermost band
C.shape of an unlighted buoy
D.color of the light
A.the shape of an unlighted buoy
B.the light color of a lighted buoy
C.the color of the topmost band
D.whether the number is odd or even
A.Errors due to unusual parallax are eliminated
B.The same body can be used for a fix from observations separated by several minutes
C.The declination is the only information needed from the almanac
D.The semidiameter correction of the sextant altitude is eliminated
A.Group flashing
B.Composite group flashing
C.Interrupted quick flashing
D.Fixed and flashing
最新試題
When a buoy marks a channel bifurcation，the preferred channel is NOT indicated by（）.
The four standard light colors used for lighted aids to navigation are red，green，white，and （）.
What is a lighted safe water mark fitted with to aid in its identification（）.
Which position includes the effects of wind and current（）.
When navigating a vessel，you（）.
When entering a channel from seaward，the numbers on buoys（）.
When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector（）.
（） is a circular traffic lane used at junctions of several routes，within which traffic moves counterclockwise around a separation point or zone.
You determine your vessel’s position by taking a range and bearing to a buoy.Your position will be plotted as a（n）（）.