The seizure of a Russia-linked oil tanker in the North Atlantic has highlighted “concerns” among NATO and North Baltic governments about dark fleet vessels and the type of crew on board, according to a maritime intelligence analyst.
U.S. military and Coast Guard personnel boarded the Marinera between Iceland and Britain on Wednesday for operating under deceptive shipping practices, including flying a false flag and violating sanctions.
According to ReutersRussian authorities demanded humane treatment and repatriation of the crew members.
Windward maritime intelligence analyst Michelle Wiese Bockmann claimed that ownership of the Marinera had just been transferred to Burevestmarin LLC, a Russian company.
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US forces seized the Russian-flagged oil tanker Marinera in the North Atlantic Sea on Wednesday, January 7, 2026, according to the US military. (US European Command)
“Ownership of the Marinera has been transferred to a newly established Russian company, whose registered owner, ship manager and commercial manager are Burevestmarin LLC.”
She also suggested that NATO and the Nordic-Baltic 8+ group of governments are “concerned” about sanctioned oil tankers with unauthorized personnel on board, including “armed guards.”
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US forces seized the Russian-flagged oil tanker Marinera in the North Atlantic Sea on Wednesday, January 7, 2026, according to the US military. (US European Command)
“Increasingly, and I know that the governments of the Scandinavian Baltic states 8+ are concerned about the fact that there are also unauthorized people on board, also known as armed guards,” said Wiese Bockmann. ‘But it is very irregular.
“Armed guards are rarely seen and are typically deployed on ships transiting the Gulf of Aden or the Red Sea and therefore considered at risk of attack by Houthis or pirates,” she added.
Following the seizure, White House Press Secretary Karoline Leavitt rejected Russian demands for special treatment for the Marinera crew during her regular briefing Wednesday.
“This was a Venezuelan shadow fleet vessel that had been carrying sanctioned oil,” Leavitt said.
“The ship was declared stateless after flying a false flag and was subject to a judicial seizure order. And therefore the crew will be prosecuted.”
The Russian Foreign Ministry said it was “closely monitoring” the situation, according to the state administration Press agency TASS.
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A crude oil tanker waits its turn to be loaded with crude oil at Lake Maracaibo in Maracaibo, Zulia state, Venezuela, May 9, 2025. (Federico Parra/AFP/Getty Images)
Wiese Bockmann noted that the crews of the dark fleet are often multinational, typically involving a Russian captain and Chinese, Indian or Filipino crew members.
“There is a blurring of commercial and military shipping around the dark fleet,” she said. “What we’re seeing now is something that has really only emerged in the last six or seven months.”
European authorities have also begun to hold crews accountable, especially when captains “facilitate dangerous, deceptive shipping practices such as spoofing and darkening,” she explained.
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“The EU recently imposed sanctions on the captain of a tanker who refused orders from the Estonian Navy (Jaguar) last May to be stopped for inspection. And the French have charged a captain for his refusal to comply with orders and his inability to justify flag nationality after authorities intercepted a Dark Fleet tanker in the Atlantic Ocean last October,” Wiese Bockmann added.
