is more than the set limit, you are prompted to verify that the upcoming course change is
acceptable.
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Note: For information about navigation settings, refer to "Navigation settings" on page 44.
Waypoint arrival circle
The Arrival radius defines the point at which a turn is initiated when you are navigating a
route.
The arrival circle (1) should be adjusted according to boat speed. The higher the speed, the
wider the circle. The intention is to make the autopilot start the heading change in due time
to make a smooth turn onto the next leg.
The figure below may be used to select the appropriate waypoint circle when creating the
route.
X axis = Boat speed in knots
Y axis = Arrival circle, radius in 1/100 Nm
Example: With the speed of 20 knots you should use a waypoint circle with radius 0.09 Nm.
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Note: The distance between any waypoints in a route must not be smaller than the
radius of the waypoint arrival circle.
WIND mode
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Note: The WIND mode is only available if the system has been set up for sailboat in the
Autopilot Commissioning dialog. This mode is not available for NAC-1 autopilot
computers.
Before the WIND mode is started it must be verified that valid input from wind transducer is
available.
Initiate wind steering as follows;
1. Switch the Autopilot to AUTO mode
2. Adjust the boat heading until wind angle is according to the angle you want to maintain
3. Select the mode indication in the autopilot controller to activate the autopilot menu, and
select WIND mode
The set course to steer (CTS) and set wind angle are entered from the compass heading and
the wind transducer at the moment the WIND mode is selected. From that point the
autopilot changes the course to maintain the wind angle as the wind direction may change.
54
Autopilot | NSS evo3 Operator Manual
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