Highway Page - Garmin GPSMAP 178C Owner's Manual

Highway Page

The GPSMAP 178C Sounder' s Highway Page also provides graphic steering guidance to a destina-
tion waypoint, placing greater emphasis on the straight-line desired course and the distance and direc-
tion you are off course. As you head toward your destination, the middle of the screen provides visual
guidance to your waypoint on a moving graphic "highway." Your present position is at the bottom
center of the highway display. The line down the middle of the highway represents your desired course.
As you navigate toward a waypoint, the highway actually moves, indicating the direction you're off
course. To stay on course, simply steer toward the center of the highway or "keep it on the road". The
default data fi elds at the top of the page indicate 'Speed' and 'Distance To Next' point, along with 'To
Course' which shows the bearing to get you back on course and 'Time To Next' point. Use the Highway
Page as your primary navigation page (in lieu of the Compass Page) when your main concern is follow-
ing a defi ned course.
Whenever the GPSMAP 178C Sounder is in simulator mode, you can also adjust your speed and
course from the Highway Page using the ARROW KEYPAD. As you head toward each waypoint
in the tour route, try adjusting your boat speed and course to get a feel for how the Highway Page
works.
To adjust the simulated boat speed/heading from the Highway Page:
1. Press the UP arrow of the ARROW KEYPAD to increase the speed in 10 knot/kph/mph increments.
Press the DOWN arrow to decrease the speed in the same increments. Press the LEFT and RIGHT
arrows of the ARROW KEYPAD to steer the boat (adjust the heading).
NOTE: In simulator mode, you may also change the simulated speed by pressing UP or
DOWN on the ARROW KEYPAD from the Compass page.
Getting Started
Highway Page
Data
Fields
Current
Destination
Desired
Course
Highway Page
Steer towards the center of the highway to get back
on course.
Present
Position
Zoom
Scale
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