NATO and Maritime Security

Fox News, citing new Sky News tracking, reports that as many as 800 Russian‑linked “shadow fleet” oil tankers carrying sanctioned crude have transited the English Channel, prompting stepped‑up Royal Navy surveillance and warnings from security experts of a possible militarized confrontation in NATO waters. Specific vessels including Rigel, Hyperion and Kousai—sanctioned by the U.S., U.K., EU or Canada and sailing under flags of convenience from ports like Primorsk and Ust‑Luga since Feb. 2—are using their legal right of “innocent passage” even as Western authorities seek to choke off revenues funding Vladimir Putin’s war in Ukraine. The U.K. Ministry of Defence says deterring, disrupting and degrading Russia’s shadow fleet is now a priority and that it has demanded proof of insurance from more than 600 suspect tankers since October 2024, while France recently diverted one such ship to Marseille‑Fos. Analysts quoted by Sky warn Britain and allies may eventually feel forced to get “much tougher” with these ships, raising a real possibility of a naval face‑off in the Channel or North Sea, and the article notes the U.S. has already seized at least seven sanctioned tankers since December 2025, including in the Caribbean. The pattern underscores how Moscow is still moving large volumes of sanctioned oil through heavily trafficked European waterways despite U.S.‑led sanctions, and how enforcement is drifting from financial tools toward more aggressive maritime measures that could risk miscalculation between Russian and NATO forces.