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GPSMAP 182/182C Owner’s Manual 105
APPENDIX > NAVIGATION TERMS
Pointer—an arrow pointing to your destination.
Speed—the current velocity at which you are travelling, relative to
a ground position. Also referred to as ground speed.
Sunrise—the current day’s time of sunrise.
Sunset—the current day’s time of sunset.
Time Of Day
—the current time.
Time To—the estimated time required to reach a Go To
destination, or the next waypoint in a route. Also known as
“estimated time en route.”
Time to Dest—the estimated time required to reach a Go To
destination, or the final waypoint in a route.
Time to Next—the estimated time required to reach a Go To
destination, or the next waypoint in a route.
To Course
—the recommended direction to steer to reduce course
error or stay on course. Provides the most efficient heading to get
back to the course and proceed along your route.
Track
—the direction of movement relative to a ground position.
Also referred to as “ground track.”
Trip Odometer
—a running tally of distance travelled since last
reset. See also “Odometer.”
Total Average Speed
—average speed of unit for both moving and
stopped speeds since last timer reset.
Total Trip Timer
—total time the unit has been in operation since
last reset of the trip timers.
Turn—the angle difference between the bearing to your destination
and your current track. “L” indicates you should turn left; “R”
indicates you should turn right.
VMG (Velocity Made Good)—the speed you are closing in on a
destination along a course. Also referred to as the vector velocity to
your destination.
Voltage
—current voltage reading being received by unit.
Water Speed—the speed through the water. This field is only
active if the GPSMAP 182/182C is receiving speed readings from a
NMEA device.
Water Temp—the water temperature. This field is only active if
the GPSMAP 182/182C is receiving speed readings from a NMEA
device.
Waypoint Destination—the final waypoint in the route, or the
destination waypoint.
Waypoint Next
—the next waypoint in the route.