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
When a buoy is in position only during a certain period of the year，where may the dates when the buoy is in position be found?（）
The soundings on the imperial chart are measured in（）.
（）is not a position-fixing system.
When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.
What information is NOT found in the chart title? （）
The short-long dashed magenta line around Gardiners Island marks（）.
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
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 arrangement of charts in the catalogue is（）.