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Features / Beyond AIS Beta

When the transponder goes dark.

AIS is not always on, and the ships that go quiet are often the ones worth watching. When a vessel has been silent for more than a day, the vessel page shows the area she is most likely in now, along the sea route to her declared destination, instead of a dot that stopped moving. The Route and AIS tab keeps a monthly track archive, Fleet has a Recently went quiet filter, and you get an alert the moment she broadcasts again. Beyond AIS is in Beta.

Last AIS

Signal lost

54 h ago

Estimated from

  • Her last fix
  • Her last speed
  • Declared destination
  • Sea route

Estimated position

A stretch of route

628 to 1,074 NM on

Illustrative. A projection along her route, not a sighting: it is wrong if she changed course.

How it works

01

It notices the silence

A vessel with no position for 24 hours is marked quiet in the fleet list and on her dossier, and the Recently went quiet filter in Fleet pulls them all together. A hunt can alert you from six hours, and again the moment she broadcasts.

02

It estimates where she is

Her last fix, her last speed and the sea route to the destination she declared give the stretch of route where she most likely is. It is drawn as a band, not a pin, because it is a projection and not a sighting.

03

It reads her history

Every silence of two days or more since January 2022 is sorted by how far she moved: at sea out of receiver range, lying still, or further than she could have sailed in the time.

What’s included

  • Quiet vessels flagged in the fleet list and dossier
  • A Recently went quiet filter in Fleet
  • Estimated position along the sea route
  • Alerts when a vessel goes quiet and the moment she broadcasts again
  • A monthly track archive in the Route and AIS tab, back to January 2022
  • Every silence sorted into coverage gaps and unexplained ones
  • Sanctions screening in the same view

FAQ

Common questions

See the position, then reach the person who decides

Beyond AIS | Keep tracking when the transponder goes dark | Vessel Hunter