French Special Forces Board Sanctioned Russian Oil Tanker in International Waters Amid Crackdown on Shadow Fleet

French special forces intercepted the tanker Deyna, suspected of using a false flag to transport Russian Arctic oil, following a Murmansk loading.

By: AXL Media

Published: Mar 23, 2026, 9:17 AM EDT

Source: Information for this report was sourced from Barents Observer

High-Stakes Interception in International Waters

In a significant escalation of maritime enforcement, French special forces have executed a tactical boarding of a sanctioned vessel carrying Russian Arctic crude. According to Atle Staalesen of the Barents Observer, the French Navy intervened in international waters on March 20 to inspect the Deyna, a 20-year-old tanker that had recently loaded its cargo at the north Russian port of Murmansk. Video footage released by military authorities depicts a helicopter hovering over the aging vessel as marines were lowered onto the deck, marking the second such high-profile seizure in recent months following action against a similar tanker known as the Grinch.

Legal Framework and International Military Cooperation

The operation was not a unilateral move but was coordinated through several legal and international channels. According to a press release from the French Navy, the boarding was carried out at the specific request of the country’s public prosecutor and maintained strict compliance with Article 110 of the United Nations Convention on the Law of the Sea. Furthermore, French authorities confirmed that the mission was conducted in close cooperation with British military counterparts, highlighting a unified European front against the clandestine transport of sanctioned Russian energy products through sensitive maritime corridors.

The Complex Web of Fraudulent Flagging and Ownership

The Deyna serves as a textbook example of the "shadow fleet" tactics used to bypass international trade restrictions. According to the shipping information system Equasis, the vessel has cycled through at least five different flag states since 2020 to obscure its origins. Investigators have found conflicting data regarding its current status; while some tracking services list Mozambique as the flag state, others indicate the vessel has been operating under a fraudulent Tongan flag since late 2025. This lack of transparency is often a precursor to environmental and security risks, as the ultimate ISM manager of the vessel remains officially unknown.