A.Dead reckoning position
B.Leeway position
C.Estimated position
D.Set position
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A.ECDIS warnings and messages
B.Hydrographic Office data
C.Notice to Mariners information
D.All of the above
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
最新試題
When latitude and longitude are used，these shall be expressed in（）（and decimals of a minute if necessary），north or south of the Equator and east or west of Greenwich.
The four standard light colors used for lighted aids to navigation are red，green，white，and （）.
（） is a circular traffic lane used at junctions of several routes，within which traffic moves counterclockwise around a separation point or zone.
When entering a channel from seaward，the numbers on buoys（）.
The recording fathometer produces a graphic record of the（）.
What is an ebb current（）.
Depiction of TSS's on charts uses（）as the primary color.
Which buoy will NOT display white retro reflective material（）.
Which position includes the effects of wind and current（）.
In very high latitudes，the most practical chart projection is the（）.