Type PGN Description129025 Position: Rapid update129283 Cross track error129284 Navigation data129285 Navigation route and waypoint infoReceive 126992 System time127250 Vessel heading127489 Engine parameters: Dynamic127488 Engine parameters: Rapid update127493 Transmission parameters: Dynamic127505 Fluid level128259 Speed: water referenced128267 Water depth129025 Position: rapid update129038 AIS class A position report129039 AIS class B position report129040 AIS class B extended position report129539 GNSS DOPs129794 AIS class A static and voyage relateddata129809 AIS class B "CS" static data report, partA129810 AIS class B "CS" static data report, partB130310 Environmental parameters130311 Environmental parameters130313 Humidity130314 Actual pressureNMEA 0183 InformationType Sentence DescriptionTransmit GPAPB APB: Heading or track controller (autopilot)sentence "B"GPBOD BOD: Bearing (origin to destination)GPBWC BWC: Bearing and distance to waypointType Sentence DescriptionGPGGA GGA: Global positioning system fix dataGPGLL GLL: Geographic position (latitude and longitude)GPGSA GSA: GNSS DOP and active satellitesGPGSV GSV: GNSS satellites in viewGPRMB RMB: Recommended minimum navigationinformationGPRMC RMC: Recommended minimum specific GNSSdataGPRTE RTE: RoutesGPVTG VTG: Course over ground and ground speedGPWPL WPL: Waypoint locationGPXTE XTE: Cross track errorPGRME E: Estimated errorPGRMM M: Map datumPGRMZ Z: AltitudeSDDBT DBT: Depth below transducerSDDPT DPT: DepthSDMTW MTW: Water temperatureSDVHW VHW: Water speed and headingReceive DPT DepthDBT Depth below transducerMTW Water temperatureVHW Water speed and headingWPL Waypoint locationDSC Digital selective calling informationDSE Expanded digital selective callingHDG Heading, deviation, and variationHDM Heading, magneticMWD Wind direction and speedMDA Meteorological compositeMWV Wind speed and angleVDM AIS VHF data-link message13