Raymarine ST70 - Set Ground Wind; Set Magnetic Variation

Chapter 2: Commissioning Procedures 15
Set ground wind
You can choose either Speed Over Ground (SOG) or Speed Through Water (STW)
from which to derive the ground wind speed.
To set the required method:
1. With the Advanced Options menu displayed,
use
< or > to select the Ground Wind option.
2. Press ENTER , to display the Ground Wind setup
box.
3. Use < or > to select either STW or SOG, then
press
ENTER to return to the Advanced Options
menu .
Now proceed to Set magnetic variation .
Set magnetic variation
The magnetic variation is the difference in heading
between true north and magnetic north. Before setting this, refer to an up-to-date
chart of the area in which you intend using your boat, to ascertain the correct value of
magnetic variation.
Note: As the magnetic variation is dependent on your geographical location, you may need to
change the magnetic variation value during a long voyage.
To set the magnetic variation:
1. With the
Advanced Options menu displayed,
use
< or > to select the Variation option.
2. Press
ENTER , to display the Variation setup
box. This has two adjust boxes, an upper box
which shows the variation mode, and a lower
box that shows the variation value.
3. Press to select the upper (mode) adjust box.
Press ENTER to select
Advanced Options
Ground Wind
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SOG
Press ENTER to accept
Ground Wind
i
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Select data source for Ground Wind.
Press ENTER to select
Advanced Options
Variation
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-6
On
degrees
Variation
i
Press ENTER to accept
Set difference between Magnetic
and True bearings.
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