Maritime glossary · Shadow Fleet
Dark Fleet
The pool of ageing tankers trading sanctioned or high-risk cargoes outside mainstream insurance and oversight.
Definition
The dark fleet, or shadow fleet, is the growing pool of mostly older tankers that carry sanctioned or high-risk crude and products outside the mainstream system of Western insurance, classification, and oversight. These ships often use opaque ownership, frequent flag changes, AIS gaps, and ship-to-ship transfers to keep trading. They concentrate the risk, age, and poor compliance the rest of the market screens out, which makes them a focus for regulators, insurers, and port authorities.
How Vessel Hunter uses Dark Fleet
The markers of dark-fleet activity, age, opaque ownership, flag-hopping, and AIS gaps, are exactly the signals Vessel Hunter pulls together per hull.
Related terms
- Sanctioned Vessel
A ship designated under a sanctions regime, or trading in breach of one, which is barred from much of the market.
- AIS GapGoing Dark
A period when a vessel stops transmitting AIS, sometimes innocent, sometimes a sign of evasion.
- Flag of Convenience
Registration of a ship in an open registry abroad, usually for lower cost and lighter regulation.
- Oil Tanker
A tanker built to carry crude oil or refined petroleum products in bulk liquid form.
The bigger picture
Dark Fleet is one piece of the commercial maritime picture Vessel Hunter pulls together for shipyards, suppliers, service providers, and port agents. Every vessel record bundles AIS, ownership, inspections, dry-dock history, casualty record, classification status, and a verified contact for the operator decision-maker behind the ship, so the team that reaches out first wins the work.
Continue reading: full maritime glossary · every Vessel Hunter feature.