API access

Everything on this site is free to browse: the live map, every warning page and every category list, including the archive going back to 1997.

Programmatic access — calling /api from scripts, bulk exports, webhooks — is a paid tier and needs an API key. Requests without one are answered with 403.

The paid API is not open for self-service yet. Details will appear here.

Data: official NAVAREA / HYDRO* broadcasts (NGA, Japan Coast Guard, Spanish Navy IHM) — see About & data sources. Not for navigation.