Onwa Marine Electronics KAP-833 - Manual (Page 17)

In some vessels, changing course requires a large amount of rudder to be applied
initially, and then a smaller amount of rudder in the REVERSE direction to stop
the vessel from swinging beyond its desired course. This is called counter-rudder.
The KAP-833 autopilot has this feature built-in. A counter-rudder setting of 1
gives no counter-rudder steering, suitable for light and manouverable vessels. If
you find your ship over-steering when under autopilot control, increase the
counter-rudder setting by a couple of steps, and see if the next course change
behaves better.
Once the correct setting is found for your vessel, it should not need to be changed.
Note that when in POWER STEER mode, you may prefer to set the counter-
rudder control to
1 .
Counter-Rudder 2 4
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