Vesper AIS WatchMate 850 Manual page 40

Use the following buttons from the Anchor Watch screen:
Reset Reset the anchor location to your current position.
Dist Adjust the alarm distance (radius of the circle).
Enable Turn the alarm on or off.
Disable
Home Return to the situation display.
Note: If the alarm is enabled, it will remain active.
Use of Heading Data
If heading data is available, your vessel is shown oriented by its heading. If heading data is
not available, your vessel is shown oriented by its course and it is likely it will not correspond
accurately with reality. It is also normal for the orientation of your vessel to fluctuate or point
north in this circumstance.
Effect of GPS Antenna Reference Location
The Anchor Watch determines the position of the bow of your vessel and uses it when
marking your anchor location and also when plotting your current vessel position. This
increases accuracy as your vessels swings around its anchor. However, this can only be
done if a heading sensor is connected to your
vessel's GPS antenna reference location (A, B, C, D) is configured using the AIS
Transceiver Setup screen.
If a heading sensor is not connected or your GPS antenna reference location is not
configured, then the Anchor Watch uses the position of your GPS antenna for both marking
the anchor location and vessel positions.
Auto Clear
If the Anchor Watch alarm is not enabled and your vessel has moved a significant distance
from its previously marked anchor location, the Anchor Watch automatically clears the
previously marked location. This allows you to more easily set a new anchor watch using the
procedure above each time you move to another location.
WatchMate. It also requires that your
AIS
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