单项选择题
The path that a vessel is expected to follow，represented on a chart by a line drawn from the point of departure to the point of arrival，is the（）.
A.DR plot
B.track line
C.heading
D.estimated course
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相关考题
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单项选择题
The only cylindrical chart projection widely used for navigation is the （）.
A.Lambert conformal
B.Mercator
C.azimuthal
D.gnomonic -
单项选择题
The numeral in the center of a wind rose circle on a pilot chart indicates the （）.
A.total number of observations
B.average wind force on the Beaufort scale
C.average wind force in knots
D.percentage of calms -
单项选择题
The maximum difference between mean time and apparent time is （）.
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
