Navigation Data - Navman TRACKER 5100I Installation And Operation Manual

Navigation data

The boat is sailing from the start to the destination and has moved off the plotted course from the start to the
destination.
BRG Bearing to Destination
+BRG Bearing to cursor
CDI Course Deviation Indicator When the boat is navigating to a point, the chart and highway displays
COG Course Over Ground
CTS Course To Steer
DTG Distance To Go
ETA Expected Time of Arrival
+RNG Range to cursor
SOG Speed Over Ground
STR Steering
TTG Time To Go
XTE Cross Track Error
VMG Velocity Made Good
Destination
SOG (speed)
STR
CTS
Plotted
course
Start
40
Bearing to the destination from the boat.
Bearing to cursor from boat (cursor mode, see section 3-1-1).
show a parallel line on either side of the plotted course. These two
lines are called the Course Deviation Indicator (CDI) lines. The distance
from the plotted course to a CDI line is the CDI scale.
Set the CDI scale (see section 13-2) to the maximum distance that the
boat should deviate from the plotted course. The chart and highway
displays show the CDI lines, which are like a highway over the water
where the boat will move. The displays show how far the boat has
deviated from the plotted course and if the boat is approaching a CDI
line. If the XTE alarm is enabled (see section 13-6) an alarm will sound
if the boat reaches a CDI line.
Direction in which the boat is moving over the ground.
Optimum course to steer to return to the plotted course.
Distance from the boat to the destination.
At the destination, assuming that SOG and COG remain constant.
Distance from boat to cursor (cursor mode, see section 3-1-1).
Current boat speed over the ground. This is not necessarily the same
as the boat speed through the water nor the speed at which it is
approaching the destination.
The difference between COG and CTS.
The estimated time to reach the destination.
The distance from the boat to the nearest point of the plotted course.
XTE may have a letter: R means steer to the right to return to the plotted
course, L means steer to the left.
The speed at which the boat is approaching the destination.
DTG (distance)
VMG (speed)
BRG
COG
Boat position
Destination
Plotted
course
CDI scale
(distance)
Start
TRACKER 5100/5100i/5500/5500i Installation and Operation Manual
XTE
(distance)
Boat
position
CDI scale
(distance)