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To edit the route on the map:
1. Highlight the Route tab on the Main Menu.
2. Select a route, and press ENTER. Press MENU to open the
Route Review Page options menu.
3. Highlight Edit on Map, and press ENTER.
4. Select a location on the route (the route turns red when the
arrow is over the route), and press ENTER.
5. Use the ROCKER to drag the route to the new point location,
and press ENTER.
Editing the route on the map
6. If the New Waypoint Page opens, edit the waypoint as
needed, highlight OK, and press ENTER.
7. Repeat steps 4 through 6 until all points are added to the
route. Press QUIT when nished.
You can enter information about your trip so the GPSMAP 378/478
can estimate information about your trip.
To plan your route:
1. Open the Route Review Page options menu.
2. Highlight Plan Route, and press ENTER.
Entering Speed and Fuel Flow for trip planning
3. Enter the data for Speed and Fuel Flow. You also can enter
the date and time of your departure. Press QUIT to return to
the Route Review Page.
NOTE: Fuel ow rates are measured in “units per hour.” System
setting changes for units of measure (statute, nautical or metric)
do not affect the fuel ow measure. You should enter fuel ow
rates based on information for your vehicle/vessel (such as the
operator’s manual or performance specications), and make note
of the units of measure (gallons or liters).
GPSMAP 378/478 Owner’s Manual 23
MArIne Mode > creAtIng And usIng routes