B&G Zeus Touch 12 - Manual (Page 29)

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Navigating with the Zeus Touch | Zeus Touch Operator Manual
Magnetic variation
Magnetic variation is the difference between true bearings and magnetic bearings, caused by
different location of the Geographic and the Magnetic north poles. Any local anomalies such
as iron deposits might also affect the magnetic bearings.
Magnetic variation is applied in order to navigate with heading in “True” mode.
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 Zeus Touch
system.
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 lat./lon coordinates
displayed on the chart panel.
Phantom Loran
Enables use of Phantom Loran.
Loran settings
Defines Loran chains (GRI) and preferred station for waypoint entry, cursor
position and position panel.
The graphic example shows cursor position window with Loran position
information.
For more information refer to your Loran system documentation.
Navigation panels
The Steer and Position panels can be used to display information when you are navigating.
The Steer panel
Data fields
Tap left/right
arrow symbol to
scroll
Course line Vessel symbol Off course limit