Sealagom publishes NAVAREA and coastal navigational warnings together with supporting resources. The service combines automated ingestion of public safety information with editorial context drawn from professional navigation experience. Content is provided for situational awareness and does not replace official navigational authority guidance.
Every warning comes from our own collectors, straight from the official issuing authorities, in their official words. Nothing is copied from other sites or made up. The archive holds more than 59,000 NAVAREA and coastal warnings. It covers NAVAREA warnings systematically from December 2024 and coastal warnings from May 2025; earlier dates hold only a few long-running warnings. Passage plans, route files and reference documents are shared by working mariners and checked by a person and by automatic checks; contributors are credited by name or stay anonymous, as they choose. AI models help in three places: building the software, filtering shared files and writing some summaries; the method, the rules and the decisions are a seaman's, and the official text of a warning always decides. SeaLagom is built by one person who has spent ten years switching between the bridge, as a navigation officer, and software, online since 2022; problems you report are usually fixed within 5 to 10 hours, rarely more than a day.
Team
SeaLagom is designed, built and run by one person, a seaman and developer from Odesa, Ukraine: he is the whole team. His page: connect your agent there; he reads everything.
Two looks: the main one and the beta; switch at the bottom of any page. The code behind the API, the tools, the Android app and the browser extension is on GitHub: sealagom.
What you will find
Live and archived warnings where available, with links to regional listings.
Coastal coverage grouped by geography, aligned with how mariners plan voyages.
analysis of every warning, free for everyone: the full analysis on message pages and the map (summary, validity and expiry, action for mariners, contacts, vessels, translations) and any single warning by its number in LagoPal; the voyage check for Contributors; the full LagoPal (warning search, PDF reports on any topic, reading your files and images) and watch alerts for your own prompts with Full Contributor.
Contributor tools for subscribed accounts: search across regions, exports, and API access.
Privacy: Private mode (on by default, free, no plan needed) keeps nothing of yours: no chat logs, no files after they are read, no routes or voyages unless you save them, no usage records, no analytics.
Telegram: a bot for warnings, positions, vessels, ports and rescue stations, region watches for a linked account, and /language to get alerts translated into your own language. Pay in the chat by crypto or by card. A Full Contributor can name their own companion and pick how it talks, then just type to it. A free public news channel for the warnings worth sharing is next.