RayNet by Raymarine

RayNet is an Ethernet protocol and connector standard developed by Raymarine to connect high data volume systems. This includes systems such as plotters, cameras, radar devices, controllers for autopilots and some other systems. Raynet uses an Ethernet connection with a transmission rate of 10/100/1000 Mbit/s, which enables fast transmission of data and high-resolution video transmission in real time. Raymarine uses proprietary connectors for RayNet that are rugged and waterproof to withstand the harsh conditions at sea. Raymarine offers a wide range of devices compatible with the Raynet protocol and connectors including multifunction displays, radar and sonar systems, autopilots, weather stations and more. Although Ethernet is used as the connection protocol in RayNet, the data content is proprietary and does not follow established standards such as OneNet. Data exchange via RayNet with devices from other manufacturers is not possible. Likewise, RayNet cannot transmit NMEA2000 data and is not compatible with it. Raymarine offers cable adapters with RJ45 connectors like those used in computer technology, with which you can use conventional network components such as network cables, routers and switches. In addition, the data can also be exchanged via WiFi networks.

Overall, Raynet offers a powerful and flexible network solution for marine electronics systems that is easy to install. The closed concept, which can only be used with Raymarine components, has a disadvantage. At the connection level, however, I use inexpensive network components from the computer trade, which, however, do not meet all the requirements in the marine sector.


There are currently no open source implementations for RayNet. Rather, there is a separate implementation as a counter-proposal to established bus systems and networks in the form of SignalK.