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Boat Tech Directory

Protocols

Protocols

Section titled “Protocols”

Industry Standards

Section titled “Industry Standards”
  • IEC61162 - International Electrotechnical Commission standards, partly wrapping NMEA standards (IEC 61162-1 is NMEA0183 and IEC 61162-3 is NMEA2000).
  • LoRaWan - Long range wireless networking for IoT devices, including remote boat monitoring.
  • NMEA0183 - RS-422 based wiring layer with proprietary information protocol.
  • NMEA2000 - CAN Bus based wiring with proprietary information protocol. Also known as N2K.
  • NMEA OneNet - IPv6 Ethernet based wiring with proprietary information protocol, using M12 and RJ45 connectors.
  • NMEA over IP - Informal standard (with a formal IANA port assigned, 10110) using TCP or UDP provided by several vendor and open source products, and consumed by Navionics, AngelNav, SavvyNavvy and more.
  • SAE J1587/J1708 - Pair of older serial based engine networking standards, used by marine engines from 1990s and early 2000s.
  • SAE J1939 - CAN Bus standard, using Deutsch connectors, commonly used for engines and engine instruments, including Volvo Penta and Yanmar.
  • Shielded Twisted Pair Ethernet - Computing industry standard, commonly used for radars and other high bandwidth marine applications.

Open Source

Section titled “Open Source”
  • SignalK - Open source JSON based standard using HTTP, OpenAPI and Websockets as transport layer and able to model NMEA0183 and NMEA2000 data.

Vendor Proprietary

Section titled “Vendor Proprietary”
  • MicroNet - Raymarine owned proprietary wireless protocol for instrument telemetry, originally known as TackTick before the original vendor acquired. Gateways available for two-way interfacing to regular NMEA 0183.
  • Nexus - Sensor protocol, acquired by Garmin and used for their wind instruments and depth transducer, with NMEA2000 bridge.
  • RayNet - Raymarine’s Ethernet implementation, using a proprietary connector.
  • Seatalk 1 - Raymarine proprietary daisy-chain combined data and power, ubiquitously deployed with ST60 instruments.
  • Seatalk NG - Raymarine’s implementation of NMEA2000, compatible at data layer with a proprietary 6 pin connection to incorporate SeaTalk 1 data.
  • SimNet - Simrad variant of NMEA2000 with different connectors and supporting daisy chaining.