Sanctioned tankers shipped 176,000 tonnes of South Korean fuel to Russia in July and August

Sanctioned tankers move fuel from South Korean ports

More than 176,000 tonnes of fuel, consisting mostly of diesel, left South Korean ports bound for the Russian Far East during July and August. Seven tankers completed a combined 14 voyages between the two countries to deliver fuel to Russian Pacific terminals. The maritime deliveries took place as Moscow sought fuel imports to replenish domestic supplies depleted by Ukrainian drone strikes on Russian oil refineries. Port registries and vessel tracking records showed that three of the seven transport vessels were operating under sanctions imposed by the United Kingdom and the European Union.

Route diversions and maritime transfers

The largest single carrier in the trade was the sanctioned tanker Layla, which transported 57,000 tonnes of diesel from the southeastern port of Ulsan to Vladivostok across two separate voyages. Layla departed Ulsan on 19 July and 10 August, reporting Niigata, Japan, as its official destination to maritime authorities before altering course toward Russia. A second sanctioned vessel, the Russian-flagged tanker Astoria, which also faces Australian sanctions, loaded nearly 11,000 tonnes of fuel at Ulsan on 1 August. Astoria likewise listed Japan as its destination before sailing directly to Vladivostok. A third sanctioned vessel, Chongchon, avoided terminal docking entirely by receiving approximately 26,000 tonnes of fuel in early August through a ship-to-ship transfer off the coast of Yeosu from Celeste I, an unsanctioned tanker. Maritime transfers of this type allow operators to obscure the origin of cargo and bypass port authority inspections.

Legal framework and Seoul's foreign policy

Port records did not identify the commercial sellers or owners of the exported fuel products. While the shipments involved vessels blacklisted by Western allies, the trade did not violate South Korean domestic law. South Korea's national sanctions against Russia rely on export controls targeting industrial machinery, electronics, and vehicles rather than fuel shipments. Seoul has maintained a policy of avoiding direct supplies of lethal weapons to nations at war, even as Moscow has expressed interest in restoring bilateral trade ties. At the same time, South Korea has provided non-lethal equipment to Ukraine, including demining vehicles, body armour, and helmets, alongside a 2.3 billion dollar financial support package pledged in 2023, primarily in the form of loans.

Government response and sanctions scrutiny

Researchers tracking Russian energy supplies expressed concern over the use of South Korean port infrastructure by sanctioned vessels. Isaac Levi, an analyst at the Centre for Research on Energy and Clean Air, noted the conflict between Seoul's diplomatic commitments and the maritime operations.

It is shocking that EU-sanctioned tankers loaded fuel at South Korean ports and carried it to Russia. This undermines the sanctions regime and South Korea's support for Ukraine.

The South Korean Ministry of Foreign Affairs responded by affirming that the government participates in international efforts to end the conflict and achieve peaceful reconstruction. The ministry stated that authorities continue to monitor export controls against Russia and apply enforcement measures under existing regulations when necessary. Owners of the sanctioned tankers did not respond to requests for comment regarding the shipments.