NEMA Backbone

1 minute read

NMEA Components

I’ve begun the installation of an NMEA 2000 backbone.

I started with the Lowrance NMEA 2000 starter kit that provides the power tap, a couple of T connectors, 2 pieces of backbone and the required terminators.

I’ve added a Garmin GPS 19x and an Actisense NGT-1 USB to the bus at this point. This combination allows me to test the backbone and see real-time data.

I’ve been able to connect to the backbone from a Debian instance using CanBoat. The documentation is pretty horrid, but it turns out that once it’s up and running, you can read data from TCP ports as follows:

  • 2597 - JSON (30 seconds of data)
  • 2598 - JSON stream as received
  • 2599 - NMEA0183 stream

I was able to use OpenCPN to correctly plot the location of Loafer’s Glory using GPS data transmitted over NEMA 2000 to the USB gateway to a Virtual Debian system where it was converted to TCP by CanBoat… A long passage for vital data.

Future additions that I’m looking at:

Link Device Purchased
GPSMAP® 1222 Chartplotter Yes1
DSM410 4.1” Color Display No
EMU-1 Engine monitoring No
Run Indicator Module Bilge pump monitoring No
FloNET® Diesel Series Fuel rate monitor No
Tank Level monitor Fuel and water level monitoring No
DST110 depth / speed / temperature triducer Yes
WSO100-01 Ultrasonics Wind/Weather Station Yes
  1. I ended up purchasing the Model Here 

Updated: