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8
Getting Started
Main Pages/
Map Page
Main Pages
The Map Page is one of six main pages used in the GPSMAP 178C Sounder’s system. The six main
pages are the Map Page, Map/Sonar Split Page, Sonar Page, Compass Page, Highway Page, and Active
Route Page. All pages are linked together in a simple chain, which allows you to scroll through the
pages in either direction using the PAGE and QUIT keys.
Map Page
The GPSMAP 178C Sounder’s Map Page combines digital chartplotting with a user-selectable dis-
play of navigation data and a built-in worldwide database. It is also the page you use most to create and
edit waypoints and routes. Before we take off on our practice route, let’s take a brief look at its various
features and displays.
The map display shows your “boat” as a triangle marker on an electronically generated chart.
Geographic names, roads, markers and buoys that are provided by the optional BlueChart or
MapSource data are also shown. It also displays your track, routes and nearby waypoints. An on-screen
cursor lets you pan to other map areas, determine the range and bearing to a position, and perform
various waypoint and route functions.
The data window, located at the top of the page, provides a user-selectable display of various navi-
gation data, including speed over ground, distance to the next navigation point, compass ribbon, and
current position coordinates. The current map scale setting is located at the bottom right of the page.
PAGE
QUIT
Active Route Page
Highway Page
Map Page
Compass Page
Map/Sonar Split Page
Sonar Page
GPSMAP178CManual.indd 8 3/19/2004, 3:09:55 PM