This is not a chart and it is no substitute for one. It is a prototype: 21 hazards compiled from published prose — cruising guides, forum threads, sailing logs, spearfishing sites — in Greek, Spanish, French and Basque. Nothing here has been verified by a hydrographic office.

Seven hazards have a position their source actually published. The other fourteen do not, and are drawn as a circle of approximation, never a point. Tracks marked “local practice” come from secondhand accounts of what local sailors do; treat them as a question to ask at the base, not a route to steer.

Absence from this page means nothing. Navigate on official charts, with your own eyes, and ask locally.

Other views of the same data

• Printable brief — one page per hazard, works offline, for the chart table
• Long-form pages — satellite and drawing side by side, full provenance
• Map only — full-screen chart view

Attribution

• Basemap imagery © Esri and its providers · Satellite panels © Google
• Coastline and seamarks © OpenStreetMap / OpenSeaMap contributors (ODbL)
• Hazard descriptions quoted from the sources listed on each entry