Acronyms And Definitions - Si-tex Explorer Nav Pro User Manual

21. Acronyms and definitions

● ALT = Altitude
Altitude of GPS Antenna on the medium sea level.
● Alter = Alternate Solution (TD Coordinates System)
Parameter selected by the user that is applied in the conversion of TD values to geographical
coordinates Lat/Lon. It defines which of the two possible solutions can be used.
● AWA = Apparent Wind Angle
Angle from which the Wind appears to blow relative to a moving point (also called Relative Wind
Angle).
● AWS = Apparent Wind Speed
Speed at which the Wind appears to blow relative to a moving point (also called Relative Wind
Speed).
● Buoy
A floating object moored to the sea bottom in a particular (charted) place, as an aid to navigation.
● Buoys and Beacons
Buoys and Beacons are used to indicate to mariners recommended or established routes, under
water dangers, restrictions and regulations. They can be lighted or not and are colored according
to their international code.
● BRG = Bearing
Angle between the North (True or Magnetic) and a destination. The horizontal direction of one
terrestrial point from another referring to the North (True or Magnetic). It is often used to indicate
the direction to follow to reach the destination.
● COG = Course Over Ground
Direction of the path over ground actually followed by a vessel.
● Course Line (Time Line)
Graphical indication of the direction in which the Vessel is heading. The Course Line origin is the
vessel's position so the time line movement is synchronized with the vessels Icon. Course Line
"course" is given by the value of COG (Course Over Ground) and its length is proportional to the
SOG (Speed Over Ground).
● Default
Original factory setting for any menu selection. The default values are set after a factory settings
● Depth Area
Sea areas included in the user selectable range of minimum and maximum depth limits. The sea
area that is beyond the selected range is filled by a uniform white color, the sea area that is inside
the selected range is filled by ordinary multicolor shading. The Spot Soundings and Depth
Contours are displayed on the range only.
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Chart Plotter - User Manual