A.Set
B.Frequency
C.Period
D.Function
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A.bottom contour only up to depths of 100 fathoms
B.depth underneath the keel against a time base
C.contour of the bottom against a distance base
D.depth of water against a distance base
A.Along the magnetic equator
B.Connected by the isoclinal line
C.The isopors
D.The magnetic poles
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
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)().
Depiction of TSS's on charts uses()as the primary color.
Which buoy will NOT display white retro reflective material().
What is an ebb current().
You should plot your dead reckoning position().
Which of the following are data layer categories to be displayed on ECDIS().
Which statement concerning current is TRUE().
When using a buoy as an aid to navigation which of the following should be considered?()
What describes a flood current().