Open Waters AIS

Vessels currently inside a latitude/longitude bounding box, newest report first, with optional kind and ship-type filters. Anonymous calls may cover 100 square degrees per call.

Vessels within a radius (default 10 NM, maximum 50) of a point or of another vessel's last known position, nearest first, each with distance and bearing from the centre.

Where Open Waters AIS is hearing AIS right now: sources with their current delay, stations, freshness, and vessel counts. A bounding box adds the stations whose coverage overlaps that area and a count of vessels in it. A station ID adds statistics for that station. Vessel counts cover the last 30 minutes; max_age widens them, to 7d for the last week or all for every vessel the network has heard. An area without reports may have gaps in coverage.

The positions heard from one vessel over a time range, oldest first, with speed, course, and navigational status. Positions implying an impossible speed for the vessel are left out. A vessel can be identified by MMSI, or by IMO with a feeder or partner token. A call covers up to a year. By default the track is simplified by shape: the positions that hold its path, with breaks where the vessel went unheard; interval_minutes asks for even spacing instead.

Last known position and particulars of specific vessels by MMSI (Maritime Mobile Service Identity), or by IMO number with a feeder or partner token: the last report heard for each, however long ago, with destination, ETA, draught, and dimensions once its static data has been heard, and which identifiers match no vessel the network has heard. A vessel whose IMO number has a Wikidata item also carries its type, builder, year built, tonnage, registered dimensions, registry, home port, owner, operator, former names, and Wikipedia and Commons links from there, and a documented US vessel its service type, status, official number, registered dimensions, and tonnage from the US Coast Guard.

Vessels whose name contains the text, case-insensitive, among every vessel the network has heard, each with its MMSI and last known position when available. An optional bounding box narrows the search. With a feeder or partner token, text of the form IMO 9241061 finds the vessels reporting that IMO number, and a bare seven-digit number finds them ahead of the name matches.