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
What is NOT an advantage of the rhumb line track over a great circle track? （）
When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.
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.
Which information is found in the chart title（）.
That the scale of any part of a chart to be larger than the scale of the survey is（）.
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
The only cylindrical chart projection widely used for navigation is the （）.
The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.
The arrangement of charts in the catalogue is（）.
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.