The RC42 is a rate compass with an integrated turn rate sensor. The Simrad RC42 Rate Compass significantly enhances the dynamic performance of both the autopilot and the stabilized radar display. The Simrad RC42 compass is designed to connect to the NMEASimNet network. It comes with a 5.5-meter (18-foot) SimNet cable with a connector. The compass provides heading information even when the autopilot is turned off. It can be connected to both NMEA 2000 and NMEA 0183 networks.