Do you need a Rudder Feedback Unit?
For reliable and accurate auto-steering, your autopilot computer must also keep track of your rudder position, a rudder feedback unit provides that data. On smaller boats, Virtual Rudder Feedback (VRF) eliminates the need to install a physical sensor by using a software-based approach to calculate rudder position.
Rudder Feedback Units are typically used on larger boats or boats with inboard engines. A rudder feedback unit physically connects to your rudder, continually measures its position, and reports it to your autopilot computer.
Boats with commercial electronic steering (e.g. Volvo IPS, Optimus EPS etc.) may not require a rudder feedback unit as this feedback is integrated into the existing system. There are Simrad autopilot solutions with Virtual Rudder Feedback (VRF) options.