I recently have had several vessels I have surveyed with issues with their digital gauges freezing or not responding which turned out to be issues within the NMEA 2000
backbone or gauges (corrupted digital data). Many boat owners do not really understand how these systems work, how the communicate with each other, and are sometimes mislead by others in believing the engine
or batteries are the problem when it is infact typically a corrupted "T" fitting, gauge, or terminator. I recently wrote a blog explaining how these systems work and how simple they are in troubleshooting them. These systems are the future of boats and more and more vessels being built are outfitted with these digital data systems. The blog is at:
I hope it helps everyone understand how they work and how easy it is to troubleshoot them.