A Cyprus-linked oil tanker caught fire after being attacked by an unmanned surface vessel off Russia’s Black Sea coast, with all 23 sailors on board rescued safely.
The Aframax Rio was struck off Sochi on October 6, according to Russian authorities, triggering a major fire that initially prevented rescue crews from approaching the vessel.
All 23 crew members, who were Indian nationals, were eventually evacuated. No injuries were reported.
The incident is drawing particular attention in Greece and Cyprus because of the tanker’s ownership and management structure.
Cyprus connection
The Rio is registered to Rio Enterprises SA, while its management company is Hellenic Tankers Co Ltd.
Hellenic Tankers was founded and is headed by Cypriot shipowner Andreas Hadjiyannis, who previously served as president of the Cyprus Union of Shipowners.
The tanker was built in 2004 and has a deadweight of approximately 107,000 tonnes.
Although it is not a Russian-flagged vessel, the Rio has been linked to the transportation of Russian oil and was added to Ukraine’s sanctions list in February 2026 as part of what Kyiv describes as Russia’s “shadow fleet.”
Shipping data indicates that the vessel continued visiting Russian ports during 2026, including carrying cargo from Novorossiysk towards Asia.
Ukraine has not claimed responsibility
The circumstances surrounding the attack remain unclear.
Russian authorities said the tanker was hit by an unmanned surface vessel, but Ukraine has not officially claimed responsibility for the attack.
The Rio’s inclusion on Ukraine’s sanctions list also does not establish who attacked the vessel or make it automatically a legitimate military target.
The issue is particularly significant for Greek shipping, given the large number of Greek-linked commercial vessels operating in the region.
Athens has previously stressed that a ship’s inclusion on a sanctions list does not, by itself, make the vessel a legitimate military target.
Growing danger for commercial shipping
The attack on the Rio comes after other incidents involving commercial tankers linked to Greek shipping in the Black Sea.
A tanker named Siren was also attacked in September, with a drone striking the vessel and damaging areas used by its crew.
The latest incident highlights the growing risks facing commercial shipping operating in waters affected by the Russia-Ukraine war.
International tankers can have ownership, management and flag arrangements spanning several countries, while their cargoes may be connected to sanctioned Russian trade.
That creates a dangerous environment for crews and shipping companies, particularly when commercial vessels are operating close to an active conflict zone.
The Rio incident also raises wider concerns over the potential consequences of attacks on merchant shipping, including the safety of sailors and the risk of a major oil spill or environmental disaster in the Black Sea.
For now, however, the identity of those responsible for the attack has not been officially established.
