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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.

How this works

  1. Position: the ship's latest AIS report from a feed whose licence lets us display it, no older than 48 hours.
  2. 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.
  3. Distance: the shortest path along our learned sea lanes from the position to the port (see the sea distance tool).
  4. Arrival: report time plus distance divided by speed. It ignores waiting at anchor, pilotage, speed changes, weather and the ship's schedule.

When a ship is stopped in its recent reports, the estimate uses a typical passage speed for its type instead (for example 16 kn for a container ship, 12 kn for a tanker or bulk carrier), says so, and keeps the speed field open.

Only positions from live AIS feeds whose licence lets us publish them are used. Today that is: Voydar Beacon contributor stations, AISstream.io global terrestrial AIS, Digitraffic marine AIS, Voydar-operated receivers, BarentsWatch AIS API.

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.