Charts and Data

Open source, crowd-sourced and volunteer charts and other data sources.

• Antares Charts - Volunteer project for charting and pilotage of West Coast Scotland.
• Citizen Sea - Citizen science marine biology app, iOS and Android.
• Mapterhorn - Open Source terrain tiles for interactive web map visualizations.
• Nautical Chart Catalogs - Machine readable index of free to use nautical charts.
• OpenBathy - Open access bathymetry data.
• Open Earth - Dutch open marine data, including detailed Wadden Sea mapping.
• OpenSeaMap - Open sourced charts, in English, German, Spanish, French, Italian, Russian and Arabic.
• OpenTide - Crowd sourced tidal data, with SignalK plugin.
• OpenWaters - Open source mapping, tides and bathymetry.