HomeMapSky mapAlpha
More
Account
Loading…
Language: English
I am the creator and developer of SeaLagom.

Every navigational warning in force. On one map, ready for the bridge.

NAVAREA, coastal and NAVTEX warnings from the official coordinators, with the position of each on the map, a plain summary, and exports for ECDIS and planning tools. Updated through the day.

17,132 active warnings172 warning regions93 critical · 542 highUpdated 01 Nov 2026, 08:48 UTC
Open map

Important warnings

Daily briefing

The map

Every warning in force drawn where it is, the weather, your route and the ports along it.

Warnings by region

NAVAREA, coastal and NAVTEX, the full text of each, exports to ECDIS and GIS formats.

Noon reporting

Drop any vessel file on the map: noon, departure and arrival reports with the figures worked out.

Private mode: nothing of yours is kept; on by default, free, for every account. $20 a month

The same data for programs, with a token: API docs · /data/

Beta look