A.DR plot
B.track line
C.heading
D.estimated course
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A.Lambert conformal
B.Mercator
C.azimuthal
D.gnomonic
A.total number of observations
B.average wind force on the Beaufort scale
C.average wind force in knots
D.percentage of calms
A.equal to the longitude expressed in time units
B.about 16 minutes
C.the difference between the GHA of mean sun and the first point of Aries
D.15°of arc
A.radar conspicuous beacon
B.circular radiobeacon
C.radar transponder beacon
D.radar calibration beacon
A.deviation
B.annual rate of variation change
C.precession
D.compass error
最新試題
Which information does the outer ring of a compass rose on a nautical chart provide（）.
（）is not a position-fixing system.
The revision date of a chart is printed on which area of the chart? （）
The short-long dashed，magenta lines parallel to York River Entrance Channel mark（）．
The shoreline on charts generally represents the mean（）.
Which information is found in the chart title（）.
On a Mercator chart，1 nautical mile is equal to（）.
What is NOT an advantage of the rhumb line track over a great circle track? （）
Which aid is NOT marked on a chart with a magenta circle? （）
The arrangement of charts in the catalogue is（）.