A.mean low water
B.mean lower low water
C.mean high water
D.mean high water springs
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A.Top center
B.Lower-left corner
C.Part of the chart title
D.Any clear area around the neat line
A.DR plot
B.track line
C.heading
D.estimated course
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
最新試題
When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.
Which information is found in the chart title（）.
Particular care is needed when navigating in the vicinity of（）as very few of these features have been fully surveyed to modern standards to determine their correct position，full extent，or the least depth over them.
The survey information upon which a chart is based is found （）.
The short-long dashed magenta line around Gardiners Island marks（）.
A chart position enclosed by a square is a（n）（）.
That the scale of any part of a chart to be larger than the scale of the survey is（）.
The short-long dashed，magenta lines parallel to York River Entrance Channel mark（）．
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（）.
Which chart symbol indicates the bottom is clay（）.