Nmea 0183 Versions ((top)) 〈720p〉

Version 2.3 introduced sentences specifically designed to handle the correction signals provided by DGPS beacons, such as the GRS (GPS Range Residuals) and GST (GPS Pseudorange Noise Statistics). These allowed for higher precision navigation, vital for commercial shipping and survey work. Furthermore, v2.3 laid the groundwork for the DSC (Digital Selective Calling) integration. This was a critical evolution for safety at sea, allowing VHF radios to exchange position data with chart plotters. Through the DSC sentence structure, a distress call received by a radio could automatically populate a "man overboard" waypoint on the ship’s chart plotter. This version transformed NMEA 0183 from a convenience protocol into a critical safety infrastructure.

NMEA 0183 is a voluntary communication standard developed by the National Marine Electronics Association (NMEA). It defines electrical and data protocol specifications for communication between marine electronic devices (e.g., GPS, echo sounders, autopilots, wind sensors). Unlike its successor NMEA 2000 (a CAN-based network), NMEA 0183 is a simple, asynchronous serial line protocol. This report traces its version history, highlighting key changes in baud rate, sentence structure, and data fields. nmea 0183 versions