Suspected Russian Oil Tankers Cross Danish Waters

EU Sanctions Target Expanding Shadow Fleet

Denmark Records 292 Suspected Shadow Fleet Transits in 2025

Frequent Passages Despite EU Sanctions

Denmark recorded 292 passages in 2025 by vessels believed to be linked to Russia’s so-called “shadow fleet,” according to public broadcaster DR, which cited official data.

Figures from the Danish Maritime Authority show that tankers suspected of carrying sanctioned Russian oil sailed through Danish straits hundreds of times last year. This occurred despite expanded European Union sanctions aimed at limiting Russia’s energy exports.

Routes Through Danish Waters

Most of these vessels travel from the eastern Baltic Sea, pass near Bornholm, and continue through Danish waters. Many operate under foreign “flags of convenience” and use complex ownership structures, which make it harder to trace their true operators.

Authorities believe the ships mainly transport sanctioned Russian oil. However, officials have also raised concerns that some vessels could carry other sensitive materials.

Closer Monitoring and EU Coordination

For the first time, Danish authorities have systematically monitored, summoned, and registered vessels that the EU has formally sanctioned over the course of a full year. Officials share this data with the Foreign Ministry, which then forwards it to the European Union. The EU decides whether to add additional ships to its sanctions list.

In a written statement to DR, Denmark’s Foreign Ministry said the country’s efforts to counter the shadow fleet are producing results. During Denmark’s recent presidency of the EU Council, the bloc added 250 more vessels to its sanctions list, increasing the total number to 599.

Sanctions Raise Costs for Operators

The ministry stated that Denmark has taken a leading role in tackling the shadow fleet. It has also brought together several countries to coordinate further international action. According to the ministry, sanctions have made operations more difficult and more expensive for vessels linked to the network.
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