Ship ETA estimate
Estimate when a ship could reach a port: the remaining distance along learned shipping lanes from its latest position, at its recent speed. This is our estimate, not the ETA the crew reports.
Information only — not for navigation. Never use these results to plan or conduct a passage.
Batch runs
ETAs for a whole fleet?
Pro runs this tool for every row of a CSV or a watchlist, up to 500 rows at a time, in the Seadar Terminal, and downloads the answers as CSV. Single runs here stay free. Try Pro free for 14 days, once, no card needed.
How this works
- Position: the ship's latest AIS report from a feed whose licence lets us display it, no older than 48 hours.
- Speed: the median speed over ground of its moving reports (1 knot or more) in the 6 hours before that position, unless you enter one.
- Distance: the shortest path along our learned sea lanes from the position to the port (see the sea distance tool).
- Arrival: report time plus distance divided by speed. It ignores waiting at anchor, pilotage, speed changes, weather and the ship's schedule.
Only positions from live AIS feeds whose licence lets us publish them are used. Today that is: AISstream.io global terrestrial AIS, BarentsWatch AIS API, Digitraffic marine AIS.
The route shows where ships have sailed. It knows nothing about charted depths, traffic separation schemes, restricted areas, weather, ice or your ship's draught.