G-PILOT 3100
Operation Manual
NAVMAN
19
The G-PILOT 3100 has three ways of steering the boat, compass, GPS and wind. To select an
appropriate mode, see section 2-4. In
GPS
mode, the G-PILOT uses data from a GPS to steer
the boat along a route or to a waypoint.
5-1 GPS navigation data
Example of navigating to a waypoint:
Destination
DTG (distance)
TTG (time)
BRG (bearing)
SOG (speed)
Course error (angle)
CTS (bearing)
Plotted course
Boat
XTE (distance)
Start
The boat is sailing from the start to the destination and has moved off the GPS plotted course
from the start to the destination:
BRG
Bearing to destination
The bearing to the destination from the boat.
Course error
The difference between CTS and the boat heading.
CTS
Course to steer
Optimum course to steer to return to the plotted course.
DTG
Distance to go
Distance from the boat to the destination.
SOG
Speed over ground
The current boat speed over the ground. This is not necessarily
the same as the boat speed through the water nor the speed
at which the boat is approaching the destination.
TTG
Time to go
The estimated time to reach the destination.
XTE
Cross track error
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.
5 GPS steering mode
COG (bearing)
Summary of Contents for G-PILOT 3100
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