FX312 & FX412 VERSION 2.0
MLR ELECTRONIQUE
11
Abbreviations – Navigation
RNG = Range between your position and the position of the destination waypoint in the selected
unit. C-B segment on the diagram below.
BRG = Bearing, angle between your position and the position of the destination waypoint in
degrees. If your compass variation is zero, this angle is referenced in relation to true north.
Angle on the diagram below.
COG = Course Over the Ground of the vessel in relation to North. Angle .
XTE = Cross Track Error, the error between the vessels course being steered and the actual
course you are taking. An arrow indicates if you must go on the left or to the right to reduce the
error. C-D segment.
SOG = Speed Over the Ground. C-E vector.
VTD = This is the Velocity To Destination. If this figure is positive you are heading towards your
target waypoint but if it is negative you are heading away from the waypoint. C-F vector.
TTG = Time To Go to your destination waypoint. It is the VTD information that is used to
calculate the time to go.
ETA = Estimated Time of Arrival to your destination waypoint. It is calculated using the TTG
information and current time.
= COURSE over the ground or route
= BEARING to the waypoint of destination
A - B = direct line to the destination waypoint