The Autonnic product range include highly accurate heading sensors for use with autopilots, chart plotters, AIS or anywhere an accurate heading or compass reading is required. A gyro based version is available and best suited to sailing vessels or where you want a highly accurate heading that is compensated by the vessels heel or pitch at up to 45 degrees.

They also have a range of wind instruments, with models for sail or powered vessels. Both their heading and wind instruments come in versions with NMEA0183 and NMEA2000 outputs.

Manufacturer’s website: https://www.autonnic.com