Windvane self-steering options fall into two categories, servo pendulum and auxiliary rudder. Servo pendulum solutions utilize your boat’s own rudder and as the name suggests, auxiliary rudder products work with a separate, independent rudder system.
We believe servo-pendulum systems like the Monitor are usually your best option. They are more powerful, and perform better across a wider range of conditions on most boats
You'll find a comprehensive review of the comparative merits of both systems at "Auxiliary Rudder vs. Servo-Pendulum" in our library.
At Scanmar, we manufacture the Monitor Windvane servo pendulum system, and the Saye’s Rig, which is often the best choice for very large boats with high freeboard.
Whatever your unique requirements, we have a self-steering solution for you.