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The National Marine Electronics Association (NMEA) is a US-based marine electronics trade organization setting standards of communication between
marine electronics Marine electronics refers to electronics devices designed and classed for use in the marine environment on board ships and yachts where even a small amount of salt water can destroy some electronics devices. Therefore, the majority of these types o ...
.


Standards


NMEA 0183


NMEA 2000


NMEA OneNet

NMEA OneNet is a latest standard for
maritime Maritime may refer to: Geography * Maritime Alps, a mountain range in the southwestern part of the Alps * Maritime Region, a region in Togo * Maritime Southeast Asia * The Maritimes, the Canadian provinces of Nova Scotia, New Brunswick, and Princ ...
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 1Mbit/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 Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigation, navigate, measure distances (ranging), communicate with or detect o ...
/
radars Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, ...
, 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 Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communication protocol, communications protocol that provides an identification and location system for computers on networks and routes traffic ...
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 A registered jack (RJ) is a standardized telecommunication network interface for connecting voice and data equipment to a service provided by a local exchange carrier or long distance carrier. Registration interfaces were first defined in t ...
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 10 Gigabit Ethernet (10GE, 10GbE, or 10 GigE) is a group of computer networking technologies for transmitting Ethernet frames at a rate of 10 gigabits per second. It was first defined by the IEEE 802.3ae-2002 standard. Unlike previous Eth ...
, but the full capabilities do not have to be utilized, and would also depend on the cabling that is installed.


See also

*
Radio Technical Commission for Maritime Services The Radio Technical Commission for Maritime Services (RTCM) is a non-profit international standards organization. Although started in 1947 as a U.S. government advisory committee, RTCM is now an independent organization supported by its member org ...


References


Further reading

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External links

* Business organizations based in the United States Maritime organizations {{shipbuilding-stub