A.variation
B.true directions
C.magnetic directions
D.annual rate of variation change
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A.Cly
B.Cla
C.Cl
D.C
A.In the Coast Pilot
B.In the Nautical Almanac
C.In the List of Lights
D.In the Sailing Directions
A.Feet
B.Yards
C.Fathoms
D.Meters
A.fish trap areas
B.naval exercise areas
C.underwater cables
D.recommended track lines
A.A regulated anchorage
B.Fish trap areas
C.An area closed to the public
D.Underwater cables
最新試題
（）is not a position-fixing system.
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?（）
What defines a great circle? （）
The only cylindrical chart projection widely used for navigation is the （）.
What information is NOT found in the chart title? （）
The revision date of a chart is printed on which area of the chart? （）
Every chart is liable to be incomplete（）.
Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.
The description Racon beside an illustration on a chart would mean a （）.
When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.