You're probably using 10% of SeaLagom. Here's the other 90%

Most people open SeaLagom, read the warnings for their area and close the tab. That works, but there is a lot more on board. Here is the short tour.

1. The map does more than show warnings

Open the map and switch the layers: ships (AIS), weather, ports and every navigational warning in force. Click a warning for its card, its positions and a short plain-language summary.

2. Check your passage before you sail

Draw your route in passage mode. SeaLagom lists every warning along the track, gives a verdict per leg with ETAs, and makes a briefing PDF for the bridge.

3. Let the warnings come to you

• Subscribe to any NAVAREA or coastal region and new warnings arrive by e-mail.
• Watch a voyage: you hear about new warnings near the route ahead.
• Send alerts to Slack, Discord, Teams or your own webhook from Integrations.
• Ask @sealagom_bot on Telegram, in your own language.

4. Put the warnings on your ECDIS

From any region page, export the warnings as user charts for bridge ECDIS (Transas, Furuno, JRC and others), or as KML, GPX and GeoJSON for GIS. The ECDIS hub explains each format, and the route bank has ready routes.

5. Work offline

No link at sea? Save an offline pack before you leave port and read the warnings for your regions and your voyage without a connection.

6. Noon reports in minutes

The noon report tool fills the report from your positions and remembers your company's Excel layout. The ETA calculator is free.

7. Ports and distances

Look up any of 14,000+ ports; the main ones have VTS and VHF, pilotage, depths and limits, with sources. Port distances gives the sea distance between them.

8. NAVTEX, lights, MODUs, trends

• NAVTEX by station, as it comes in.
• Lights reported in the warnings.
• MODU: mobile offshore drilling units and their positions.
• Trends and stats: what is happening at sea, region by region.

9. Ask LagoPal

LagoPal answers questions about warnings, ports and passages, in your language.

10. Build on it

The API gives every warning as JSON, with Python and JavaScript clients and an MCP server, all open source. There is also a browser extension, an Android app and a desktop app on the app page.

Much of this is free; some tools come with a plan, see plans.

What did we miss? What would make your watch easier? Tell us in the comments: the team reads every one and answers here.