Lowrance electronic GlobalMap Baja 840C - Manual (Page 41)

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Map Page opening screen (left). Zoomed to 100 miles (center) and
zoomed to 15 miles (right). Over Zoomed means you have reached the
detail limits in an area covered only by the basic background map.
Zooming in any closer will reveal no more map details because a high-
detail custom map has not been loaded on the MMC.
If you're using only the factory-loaded background map, the maximum
zoom range for showing additional map detail is 20 miles. You can con-
tinue to zoom in closer, but the map will simply be enlarged without
revealing more map content (except for a few major city streets). Load
your own high-detail custom map made with MapCreate, and you can
zoom in to 0.05 miles with massive amounts of accurate map detail.
Map Pages with high-detail MapCreate map of an urban area loaded on
the MMC. Arterial streets appear at the 6-mile zoom range with a few
Point of Interest icons visible (left). Numerous dots representing Points
of Interest become visible at the 3-mile range, along with minor streets
(center). At the 0.6-mile zoom, you can see an interstate highway with an
exit, major and minor streets as well as Point of Interest icons (right).
Background map vs. MapCreate map content
The background map includes: low-detail maps of the whole world, con-
taining cities, major lakes, major rivers, political boundaries, and me-
dium-detail maps of the United States.
The medium-detail U.S. maps contain: all incorporated cities, shaded
metropolitan areas, county boundaries, shaded public lands (such as
national forests and parks) and some major city streets. Also included
are Interstate, U.S. and state highways, large- and medium-sized lakes
and streams and more than 60,000 navigation aids with 10,000 wrecks
and obstructions in U.S. coastal and Great Lakes waters. New for 2007
are more than 3,000 enhanced lake maps that show better defined
shorelines, depth contours and other underwater features.