GPSMAP 640 Owner’s Manual
Marine Mode: Using Charts
Marine Mode: Using Charts
The GPSMAP 640 is loaded with both a basic worldwide imagery
map and detailed BlueChart
®
g2 offshore cartography for US
waters.
In addition to the preloaded maps and charts, you can use
optional BlueChart g2 Vision
®
preprogrammed SD cards to get
the most out of your GPSMAP 640. For more information on
BlueChart g2 Vision, see
There are four ways to view charts on a GPSMAP 640 device:
Navigation Chart
—displays an overhead view of the basic
worldwide imagery map, the preloaded BlueChart g2 charts
(GPSMAP 640), and the optional BlueChart g2 Vision charts
and photos.
Perspective 3D
(
or Mariner’s eye 3D)
—displays a view from
above and behind your boat for a visual navigation aid
(
•
•
Fishing Chart
—removes navigational data from the chart and
enhances bottom contours for depth recognition (
).
Fish eye 3D—
provides an underwater view that visually
represents the sea floor according to information on the chart
).
Note:
Mariner’s Eye 3D, Fishing Charts, and Fish Eye 3D
views are only available when using optional Blue Chart g2 Vision
preprogrammed SD cards. See
.
Using the Navigation Chart
From the Home screen, touch
Charts
>
Navigation Chart
.
Use the Navigation chart to plan a course (see
), to view
map information, and as a visual aid while navigating.
Panning the Navigation Chart
1. From the Home screen, touch
Charts
>
Navigation Chart
.
2. Touch and drag the chart to view other areas on the chart.
3. Touch
Stop Panning
to return the Navigation chart to your
current location.
•
•
Содержание GPSMAP 640
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