A.Safe water mark
B.Isolated danger mark
C.Preferred channel mark
D.Daymark of no lateral significance
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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
A.A spherical topmark
B.Red and white retroreflective material
C.A sequential number
D.A red and white octagon
最新試題
The equator is（）.
When navigating a vessel，you（）.
You have been informed that dredging operations may be underway in your vicinity.Which buoy indicates the dredging area（）.
Restricted areas at locks and dams are indicated by（）.
（） is a defined area within which ships must use particular caution and should follow the recommended direction of traffic flow.
When using a buoy as an aid to navigation which of the following should be considered?（）
In very high latitudes，the most practical chart projection is the（）.
What is an ebb current（）.
You determine your vessel’s position by taking a range and bearing to a buoy.Your position will be plotted as a（n）（）.
Which statement concerning current is TRUE（）.