wdantuma/s57-tiler repository overview

S57-tiler creates vectortiles from S57 ENC's which can be used with freeboard-sk see https://github.com/SignalK/freeboard-sk⁠

download a S57 ENC ( see https://opencpn.org/OpenCPN/info/chartsource.html⁠ for a list of possible sources), only unencrypted S57 ENC's are supported ( no S63 ).

Create a directory somewhere ( eg "signalk-charts" ) with the subdirectories "enc" and "charts" ( case sensitive )

signalk-charts
   enc
   charts

Extract the downloaded S57 ENC (zip) in the enc directory and run

docker run -v  ./signalk-charts:/app/workdir wdantuma/s57-tiler  /app/s57-tiler --in workdir/enc --out workdir/charts

After processing ( may take some time ) the directory charts contains the vectortiles, the directory signalk-charts/charts should be added as a "chart path" in the Signal K charts plugin⁠