Arrival radius
Sets an invisible circle around the destination waypoint.
The vessel is considered arrived at the waypoint when it is within
this radius.
XTE limit
This setting defines how far the vessel can deviate from the selected
route, if the vessel goes beyond this limit, an alarm is activated.
Arrival alarm
When the arrival alarm is enabled, an alarm is activated when the
vessel reaches the waypoint or when it is within the specified arrival
radius.
Magnetic variation
Magnetic variation is the difference between true bearings and
magnetic bearings, caused by different locations of the Geographic
and the Magnetic north poles. Any local anomalies such as iron
deposits might also affect the magnetic bearings.
When set to Auto, the system automatically converts magnetic
north to true north. Select manual mode if you need to enter your
own local magnetic variation.
Datum
Most paper charts are made in the WGS84 format, which also is
used by the GO7.
If your paper charts are in a different format, you can change the
datum settings accordingly to match your paper charts.
Coordinate system
Several coordinate systems can be used to control the format for
latitude and longitude coordinates displayed on the chart panel.
Phantom Loran
Enables use of Phantom Loran positioning system.
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