Features / Beyond AIS
When the transponder goes dark.
AIS is not always on, and the ships that switch it off are often the ones worth watching. Vessel Hunter keeps tracking after the signal drops, reconstructing an inferred route from independent sources with a confidence score and an evidence chain you can audit.
Last AIS
Signal lost
3d 6h ago
Reconstructed from
- Satellite radar
- Port-state filing
- Bunker invoice
- Crew list
Inferred position
Route rebuilt
82% confidence
Illustrative reconstruction. Real gaps resolve from the evidence on file per vessel.
How it works
It notices the gap
The moment a watched vessel stops reporting, the gap is flagged, usually within hours, not days.
It rebuilds the route
An inferred track is reconstructed from port-state filings, satellite radar hits, bunker invoices, and crew-list submissions, the same methods used in dark-fleet and sanctions monitoring.
With a confidence score
Every reconstruction carries a confidence score and the evidence chain behind it, so you can see why the system places a dark ship where it does.
What’s included
- AIS-gap detection
- Inferred route reconstruction
- A confidence score per reconstruction
- Evidence chain: satellite radar, port-state, bunker, crew lists
- Dark-fleet flags
- Sanctions screening overlay
FAQ