A.the intensity of the light
B.checking the period and characteristics against the Light List
C.the color，because the buoy will have only a red or a green light
D.Any of the above can be used to identify the light
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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
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
最新試題
When navigating a vessel，you（）.
（） is a circular traffic lane used at junctions of several routes，within which traffic moves counterclockwise around a separation point or zone.
A celestial body will cross the prime vertical circle when the latitude is numerically （）.
The recording fathometer produces a graphic record of the（）.
The time required for a lighted aid to complete a full cycle of light changes is listed in the Light List as the（）.
Which position includes the effects of wind and current（）.
You should plot your dead reckoning position（）.
You determine your vessel’s position by taking a range and bearing to a buoy.Your position will be plotted as a（n）（）.
The equator is（）.
When entering a channel from seaward，the numbers on buoys（）.