A.ECDIS warnings and messages
B.Hydrographic Office data
C.Notice to Mariners information
D.All of the above
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A.Safe water mark
B.Isolated danger mark
C.Preferred channel mark
D.Daymark of no lateral significance
A.The objects lie in a straight line
B.The vessel is inside of a triangle formed by the objects
C.The vessel is outside of a triangle formed by the objects
D.A circle will pass through your position and the three objects
A.Can always rely on a buoy to be on station
B.Can always rely on a buoy to show proper light characteristics
C.Should assume a wreck buoy is directly over the wreck
D.Should never rely on a floating aid to maintain its exact position
A.Fathoms and meters
B.Miles and kilometers
C.Arc and degrees
D.Degrees and minutes
A.A current at minimum flow
B.A current coming in
C.A current going out
D.A current at maximum flow
最新試題
When navigating a vessel，you（）.
You determine your vessel’s position by taking a range and bearing to a buoy.Your position will be plotted as a（n）（）.
Which buoy will NOT display white retro reflective material（）.
When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
When making landfall at night，you can determine if a light is a major light or an offshore buoy by（）.
How would you pass a red buoy in the maritime buoyage system“A” （）.
What is a lighted safe water mark fitted with to aid in its identification（）.
When using a buoy as an aid to navigation which of the following should be considered?（）
What area of the earth cannot be shown on a standard Mercator chart（）.
Which position includes the effects of wind and current（）.