A.Along the magnetic equator
B.Connected by the isoclinal line
C.The isopors
D.The magnetic poles
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A.purple
B.orange
C.blue
D.yellow
A.the primary great circle of the Earth perpendicular to the axis
B.the line to which all celestial observations are reduced
C.the line from which a celestial body's altitude is measured
D.All of the above
A.Flashing red lights upstream and fixed red lights downstream
B.Yellow unlighted buoys
C.Signs and/or flashing red lights
D.Red daymarks upstream and green daymarks downstream
A.Indicates the limits of the navigable channel
B.Indicates a danger area
C.Is used to identify the characteristics of the light
D.Serves no significant purpose
A.Mercator
B.Gnomonic
C.Azimuthal
D.Lambert conformal
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When approaching a preferred-channel buoy,the best channel is NOT indicated by the().
When navigating a vessel,you().
The equator is().
() is a defined area within which ships must use particular caution and should follow the recommended direction of traffic flow.
When entering from seaward,a buoy displaying a single-flashing red light would indicate ().
You have been informed that dredging operations may be underway in your vicinity.Which buoy indicates the dredging area().
() is not likely to be a methods of Traffic Separation.
On a chart,the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector().
When using a buoy as an aid to navigation which of the following should be considered?()
Which position includes the effects of wind and current().