SWEDEN’S latest parry against Russian sanction busters could make shadow fleet operators rethink their flagging choices.

Swedish forces originally boarded Caffa (IMO: 9143611) on suspicion it was falsely flagged — something they were entitled to do under Unclos.

A crime committed in Ukraine that is also a crime under Swedish law can lead to evidence or suspects being transferred from one to the other, thanks to Sweden’s mutual legal assistance deal with Ukraine.

In this case, Sweden’s Supreme Court knocked back an appeal by Caffa’s owner, finding the alleged theft of grain on the ship is also a crime in Sweden. That paved the way for the cargoship to be handed to Kyiv.

Sweden couldn’t have done this if the ship was registered to Russia. Caffa’s fake Guinean flag was the only reason it ended up boarded and at the mercy of the Swedish judiciary.

Shadow fleet vessels started reflagging to Russia following the US’ high-profile boardings in the Atlantic Ocean. But since the influx in December 2025 the number of vessels making the switch has declined.

That may change if European strategy does too. France, for example, is happy to arrest shadow fleet tankers and release them with a fine.

Vessel extradition is a more serious consequence. The threat might prompt shadow fleet operators to rethink where they flag their vessels.

Russia has complained to the IMO that some vessels are being deflagged while at sea, rendering them stateless without their knowledge and vulnerable to European boarding teams.

Shrugs may be all the reply they receive. Unreliable flag states are, after all, unreliable.

Joshua Minchin
Senior reporter, Lloyd’s List

Click here to view the latest Lloyd’s List Daily Briefing