Raymarine e7, User Reference

Page: 86 / 320

6.1 Chart application overview
The chart application provides an electronic chart with passage
planning and navigation features. It combines 2D and 3D viewpoints
and provides a variety of cartographic information regarding your
surroundings and charted objects.
Typical uses for the chart application include :
• Monitor your vessel location and heading.
• Interpret your surroundings.
• Measure distance and bearing.
• Navigate using waypoints.
• Plan, and Navigate using routes.
• Monitor fixed and moving objects using radar overlay.
• Monitor vessels in your vicinity using AIS data.
• Keep track and record your course.
• View information for charted objects.
• Overlay NOWRad weather information.
• Overlay aerial photos and other chart enhancements
Note: To obtain full 3D detail, you must have chart cards
containing 3D cartography for the appropriate geographic area.
You can also use your multifunction display to customize your chart
application to your own particular requirements and circumstances.
You can:
• Alter the way the chart is drawn in relation to your vessel and the
direction you are travelling in (chart orientation and motion mode).
• Manage and edit chart data you have entered.
• Control the level of detail displayed on-screen.
Chart datum
The chart datum setting affects the accuracy of the vessel position
information displayed in the chart application.
In order for your GPS receiver and multifunction display to correlate
accurately with your paper charts, they must be using the same
datum.
The default datum for your multifunction display is WGS1984. If
this is not the datum used by your paper charts, you can change
the datum used by your multifunction display, using the system
preferences page. The system preferences page can be accessed
from the homescreen:
Set-up > System Settings > System
Preferences > System Datum .
When you change the datum for your multifunction display, the
chart grid will subsequently move according to the new datum, and
the latitude/longitude of the cartographic features will also change
accordingly. Your multifunction display will attempt to set up any
GPS receiver to the new datum, as follows:
• If your multifunction display has a built in GPS receiver it will
automatically correlate each time you change the datum.
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