Set Rudder Zero; Minimum Rudder - Simrad AP27 Manual

Set Rudder zero

This adjustment should be made in calm sea and side forces from
wind or current should be avoided.
• Bring the boat up to cruising speed, and head directly into the
• If the boat has twin engines, synchronize the engine RPM's.
• Set the trim tabs and stabilizers to have no effect on the boats
• Steer the boat manually on a steady course.
• Confirm the rudder ZERO position by rotating the course
Press STBD to proceed to next menu item.

Minimum rudder

Some vessels may have a tendency of not responding to small
rudder commands around the "course keeping" position because
of a small rudder, a rudder deadband or whirls/disturbance of the
water-stream passing the rudder.
By turning the Minimum Rudder function 'On', it may improve
the course keeping performance on some boats, but will increase
the rudder activity.
Only set Minimum Rudder to ON if it proves to give a better
Note !
course keeping performance in calm sea.
20221586B
wind.
heading.
knob clockwise.
Turn the minimum rudder on
by turning the rotary course
knob.
Range: OFF-ON.
Default: OFF
Maintenance
97