Changing Course - Raymarine ST1000 Plus Tiller Pilots Owner's Handbook Manual

Chapter 2: Using the Tiller Pilot 9

Changing course

In Auto mode, use the -1 and -10 (port) and +1 and +10 (starboard)
keys to change course in steps of 1° and 10°.
Port Starboard
or or
D3320-2
For example: press -10 three times for a 30° course change to port:
Original
30˚ to port
course