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What is NMEA 2000 ?

Tank Sender NMEA 2000

What is NMEA 2000?


NMEA 2000 (IEC 61162-3) is used by the maritime industry for example to connect engines, instruments and sensors on board ships. It is based on Controller Area Network (CAN) and allows data to be sent/received between devices over a single network "backbone" cable.


The higher-level NMEA 2000 (aka N2K) functionality is based on SAE J1939 and ISOBUS (ISO 11783), commonly used in heavy vehicles and agricultural/forestry machinery respectively. NMEA 2000 succeeds the older NMEA 0183 and is used today on most modern maritime vessels such as ships, boats, yachts and related equipment/sensors.




T-connectors are used to build the NMEA 2000 CAN bus "backbone" in a linear manner and to connect devices. It is a three-way connector consisting of two female connectors and one male connector. The connector is a standardized DeviceNet 5-pin A-coded connector. The physical connectors and pinout vary between micro (used in backbone networks) and micro (used in small backbones and drop cables). This miniature connector is also used in industrial applications such as CANopen to easily connect CAN based devices - such as CAN bus data loggers.


We make cables below :
Garmin Ethernet Cable

Garmin NMEA2000 Cable

NMEA 2000 Inline Terminator

Garmin Marine Network Adapter Black Small

Garmin Marine Network Cable w/Small Connector

NMEA2000 Micro-C Bulkhead feedthrough connector

Garmin GMS 10 Network Port Expander Swtich Cable
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