A.Summary of Corrections
B.Local Notice to Mariners
C.Daily Memorandum
D.Chart Correction Card
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A.vertical distance from the chart sounding datum to the ocean bottom，plus the height of tide
B.vertical distance from the chart sounding datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
A.Gray lines on the uppermost inset chart
B.Red lines on the main body of the chart
C.In parenthesis on the lines of equal magnetic variation
D.Annual rate of change is not shown
A.Chart No.1
B.Catalog of Charts
C.IMO Practical Navigator
D.IMO Light List
A.points of equal variation
B.points of zero variation
C.the magnetic latitude
D.magnetic dip
A.magnetic latitudes
B.magnetic declinations
C.dip
D.isogonic lines
最新試題
The short-long dashed magenta line around Gardiners Island marks（）.
Which information does the outer ring of a compass rose on a nautical chart provide（）.
What information is found in the chart title? （）
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（）.
When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.
The description Racon beside an illustration on a chart would mean a （）.
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.
The soundings on the imperial chart are measured in（）.
Which aid is NOT marked on a chart with a magenta circle? （）
On chart，bearings to near objects should be used in preference to objects farther off，because（）.