The European Union has expanded its sanctions against Russia's so-called shadow fleet to include vessels providing bunkering and other support services, as part of its 21st sanctions package announced on Thursday.

The move broadens existing restrictions beyond oil tankers transporting Russian crude, targeting ships that enable the shadow fleet to continue operating despite Western sanctions. Bunkering vessels supply fuel to ships, making them part of the logistical network that can keep sanctioned or high-risk tankers at sea.

The package adds 41 vessels to the EU's sanctions list, bringing the total number of designated ships to 673.

The bloc also sanctioned companies and individuals supporting the shadow fleet. Notably, this includes the first-ever designation of a crewing agency linked to the fleet's operations, extending pressure beyond vessel owners and operators to maritime services needed for day-to-day activity.

Alongside the shipping measures, the EU introduced new requirements governing the sale of LNG tankers. Sellers must now notify authorities of LNG tanker sales. The legislation also establishes a legal basis for future restrictions on sales of LNG tankers to Russian individuals and companies, aimed at reducing the risk of vessels being diverted for Russian use.

The measures form part of a broader sanctions package designed to curtail Russia's energy revenues and limit its ability to circumvent existing restrictions through maritime transport. By adding support vessels and service providers, the EU is targeting the wider infrastructure around maritime trade rather than only the ships carrying Russian energy cargoes.