[kevinprince]

Disagree, their is a ton of data on the NMEA bus on even small boats which is useful for logging and working out whats going on across various systems. I built a custom board to handle this last year with a Pi for capture.

Generally from what I've seen in the UK is GPS, Log and weather vane's are digital so should have NMEA feeds. Small vessels are advised to use paper charts. Its one of those things which still beats an electric plotter.