Have you checked out OpenSeaMap.org and their related wiki https://wiki.openstreetmap.org/wiki/OpenSeaMap? It might get you started.
Clifford On Thu, Jun 28, 2018 at 11:19 AM Volker Schmidt <[email protected]> wrote: > > How to map a nautical channel [1] ? > > > [1] https://en.wikipedia.org/wiki/Channel_(geography)#Nautical_channels > _______________________________________________ > Tagging mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/tagging > -- @osm_seattle osm_seattle.snowandsnow.us OpenStreetMap: Maps with a human touch
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