US Seizes Russian Oil Tanker Marinera Amidst Shadow Fleet Concerns

The United States has seized the Russian-flagged oil tanker Marinera (formerly known as Bella 1) in the North Atlantic, escalating tensions over sanctions evasion and illicit oil trade. The seizure, which occurred approximately 190 miles off the southern coast of Iceland on January 7, 2026, is part of a broader US effort, Operation Southern Spear, to disrupt the flow of sanctioned oil and counter what officials describe as a “shadow fleet” of tankers.

Background: Operation Southern Spear and Sanctions

Operation Southern Spear, initiated on December 10, 2025, is a US-led blockade targeting oil tankers trading with Venezuela. The US imposed additional sanctions affecting oil trade with Venezuela prior to enacting the blockade. The Marinera had been sanctioned by the US Department of the Treasury in 2022 for alleged involvement in an oil trafficking network linked to the Islamic Revolutionary Guard Corps and Hezbollah .

The Seizure of the Marinera and Russian Response

Prior to the January 7th seizure, the US Coast Guard attempted to intercept the Bella 1 near Venezuela last month, but the tanker evaded capture by altering course. The US then pursued the vessel northeast, deploying P-8 surveillance aircraft from RAF Mildenhall in Suffolk, England, to monitor its movements. During the pursuit, the crew reportedly painted a Russian flag on the hull and registered the vessel as the Marinera under Russian flag, claiming Russian protection. Russia formally requested the US cease pursuing the vessel last month.

Despite Russia’s claims, the US does not recognize the vessel’s Russian status, considering it stateless . Secretary of State Marco Rubio stated the US believes Russia cannot simply claim ownership of the tanker .

International Support and Military Deployment

The United Kingdom provided support to the US operation, including basing for US military assets and surveillance support from the air. The UK’s RFA Tideforce tanker also supported US forces during the interdiction . The US repositioned military assets to the UK in early January, with at least 12 C-17 transport aircraft landing at airbases in Fairford and Lakenheath, along with V-22 Ospreys and AC-130 gunships .

Previous Seizures and US Resolve

The seizure of the Marinera follows the December 11, 2025, seizure of the Skipper, a extremely large crude carrier, by the US Coast Guard near Venezuela. Department of Homeland Security Secretary Kristi Noem has vowed to continue disrupting the funding of narco-terrorism and protecting American interests .

Legal Proceedings

The US intends to prosecute the captain of the Marinera, Georgian national Avtandil Kalandadze and the first officer for violating US law . The two remain in US custody. The remaining 26 crew members have been repatriated to their countries of origin .

Shadow Fleets and Sanctions Evasion

The US actions are aimed at countering the use of “shadow fleets” – vessels involved in illicit oil trading – to circumvent sanctions. These fleets often employ tactics such as ship-to-ship transfers and false flags to obscure the origin and destination of sanctioned oil .