National Marine Electronics Association

The National Marine Electronics Association (NMEA) is a US-based marine electronics trade organization setting standards of communication between marine electronics.

NMEA OneNet
NMEA OneNet is a latest standard for maritime data networking based on 802.3 Ethernet, and will complement existing onboard NMEA 2000 networks by allowing for high-capacity data transfers.

Current maritime data networks have bandwidth capacities of less than 1 Mbit/s. Building on Ethernet, OneNet allows for capacity in the hundreds or thousands of megabits per second. This extra bandwidth is needed for transferring unprocessed sensor data from sonar/radars, as well as video feeds from for example an engine room.

The primary features and goals of OneNet are as follows:
 * NMEA 2000 data transfer over IPv6 in a standard format
 * High-bandwidth applications such as radar, video and more that are not possible via NMEA 2000
 * Support Ethernet and TCP/IP at 1 gigabit and faster speeds
 * Utilize standardized connectors (RJ-45 and X-Coded M12) depending on installation
 * Robust, industry-standard cybersecurity requirements
 * NMEA 2000 gateway compatibility
 * Mandatory device & application certification by the manufacturer, then verified by NMEA

The use of the X-Coded M12 connector allows for up to 10 Gigabit Ethernet, but the full capabilities do not have to be utilized, and would also depend on the cabling that is installed.