The HPC Compass uses the latest materials and precision engineering techniques to give an accuracy of + / - 1° to a maximum heel of 60°. It features a 6-axis configuration that also incorporates heel and pitch, giving exceptional results for data such as apparent wind angle, true wind angle and the true wind direction even when the boat is at a substantial angle of heel. The HPC Compass comes with a Nexus network bus port and an NMEA 0183 output port