Maritime Industry Briefing: France Intercepts Shadow Fleet Tanker as HNS Liability Treaty Nears Entry Into Force

## France Intercepts Sanctioned Shadow Fleet Tanker, Russia Cries 'Piracy' France's navy has intercepted another tanker linked to the Russian shadow oil trade in the Atlantic Ocean, ordering the vessel to proceed to the French mainland, according to gCaptain. The move marks an escalation in European enforcement efforts against the network of opaque shipping operations that have helped Russia circumvent Western sanctions on its oil exports. Moscow swiftly condemned the action, characterising it as illegal and accusing France of conduct bordering on 'international piracy.' The diplomatic row underscores the deepening friction between Western governments and Russia over the shadow fleet — a loosely defined collection of ageing, often poorly insured tankers operating under flags of convenience that have become a central mechanism for moving Russian crude and petroleum products to markets in Asia and beyond. France's intervention follows a broader pattern of increased scrutiny by European maritime authorities. Denmark, Estonia, and Finland have previously monitored or detained vessels suspected of belonging to the shadow fleet transiting the Baltic Sea. The Atlantic interception signals that enforcement activity is expanding geographically, raising questions about the legal frameworks governing such actions on the high seas and the potential for further diplomatic confrontation. For the maritime industry, the episode highlights growing compliance and reputational risks for shipowners, insurers, port operators, and flag states that may — knowingly or otherwise — have exposure to sanctioned tonnage. --- ## HNS Liability Treaty Confirmed for November 2027 Entry Into Force In a significant development for shipping's regulatory landscape, a long-awaited international compensation regime covering accidents involving hazardous and noxious substances (HNS) at sea is now confirmed to enter into force in November 2027, according to Splash247. The HNS Convention, developed under the auspices of the International Maritime Organization (IMO), has been decades in the making and addresses a critical gap in maritime liability law. Unlike oil spills — which are covered by well-established frameworks such as the Civil Liability Convention (CLC) and the International Oil Pollution Compensation (IOPC) Fund — incidents involving chemicals, liquefied gases, and other hazardous cargoes have until now lacked a comparable international compensation structure. The timing is particularly relevant as the shipping industry navigates a rapid expansion in the trade of alternative fuels and chemical cargoes, including ammonia, methanol, and liquefied hydrogen — substances that carry significant hazard profiles. The convention will establish a two-tier compensation system, combining shipowner liability with an industry-funded HNS Fund to cover claims exceeding individual liability limits. For cargo interests, port authorities, coastal states, and P&I clubs, the 2027 implementation date provides a firm planning horizon to align internal frameworks, insurance arrangements, and response protocols with the new regime. --- *Sources: gCaptain, Splash247*