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AB
Now that were navigating to an actual destination, lets move on to the next
page of the GPSMAP 180 system, the Navigation Page:
1. Press the
J
key.
The Navigation Page provides graphic steering guidance to your destination.
The bearing (BRG) and distance (DIS) to the destination, with your current course
(COG) and speed over ground (SOG), are displayed at the top of the page, along
with a graphic compass to indicate your cardinal heading. The estimated time
enroute (ETE) and velocity made good (VMG, or the rate you are closing in on
your destination) are displayed at the bottom of the page.
As you head toward the destination, the middle section of the page gives you
visual guidance to your waypoint on a graphic highway, which displays the route
and nearby waypoints on screen. The moving arrow below the highway always
points to the destination waypoint relative to the direction youre moving. The
line down the center of the highway represents your desired track, while the bot-
tom of the page provides a graphic indication of your crosstrack error (the dis-
tance and direction you are off course) according to the scale at the bottom right
of the page.
12
GETTING STARTED
Navigation Page
A. In this example, our boat is off course to the
left by about 1/16th of a mile (the base of the
highway map is equal to the scale selected at
the bottom right of the page). To get back on
course, steer right.
B. In this example, our boat is off course to the
right. To get back on course, steer left. A digi-
tal readout of your exact crosstrack error can
be displayed in any of the six data fields (see
page 29).
Data
Fields
CDI
Scale
Graphic
Highway
Graphic
Compass Tape
Pointer to
Waypoint