Simrad NSS12, Technical Manual

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Autopilot | NSS Installation Manual
By increasing the Minimum rudder parameter you may improve the course keeping
performance on some boats. This will however increase the rudder activity.
Minimum wind angle to port and starboard
These parameters should be set identical to the minimum apparent wind angle that
will keep the sails from stalling and maintain boat speed. The parameters will vary
from boat to boat.
The settings are used for the tack-prevent function. They also apply when the autopi-
lot is operating in WindNAV mode.
You can select different minimum wind angles for port and starboard. The difference
between port and starboard will be taken into account when calculating the Distance
To Turn (DTT).
Navigation change limit
This parameter defines the maximum course change that the autopilot is allowed to
make when the NSS is following a route (NAV steering).
If the required course change to the next waypoint in a route is more than the set
limit, you are prompted and must acknowledge the course change before the autopi-
lot will turn the vessel.