Ukraine Strikes Russian Tankers in Black Sea

Ukraine hits tankers in Black Sea in escalation against Russia

London, December 01, 2025

Ukraine has struck two Russian oil tankers, the Kairos and Virat, in the Black Sea using upgraded Sea Baby underwater drones on November 30, severely damaging the vessels to hinder Russia’s oil export operations amid the ongoing conflict.

Details of the Attacks
The Ukrainian forces employed the Sea Baby underwater drones, an advanced maritime drone developed collaboratively by Ukraine’s Security Service and the Navy’s 13th Main Directorate of Military Counterintelligence. The unmanned devices targeted the Russian tankers, which were part of Russia’s “shadow fleet,” a network of ships operating under flags of convenience or without registration to bypass international sanctions. Both tankers were en route to the Russian port of Novorossiysk, intended to load oil for export.

Extent of Damage and Safety Measures
The Kairos tanker sustained critical damage resulting in fires onboard, prompting the evacuation of all 25 crew members to ensure their safety. The Virat tanker was struck twice, including damage above the waterline, rendering it temporarily incapacitated. These successful attacks have disrupted two key vessels within the shadow fleet, directly impacting Russia’s covert operations to export oil despite Western sanctions.

Geopolitical and Environmental Significance
Ukraine’s strikes form a strategic operation to financially weaken Russia by targeting vital maritime routes that facilitate oil exports, which remain a major revenue source for Moscow amid extensive sanctions. The involvement of international waters near Turkey’s coast has prompted environmental and navigational safety concerns, with Turkish authorities expressing unease about potential risks stemming from such maritime military actions.

Broader Strategic Implications
This incident is part of a broader Ukrainian campaign employing various unmanned drones to disrupt Russian oil infrastructure and shipping capabilities. The use of Sea Baby underwater drones highlights Ukraine’s innovative approach to modern warfare through unmanned technology, aiming to exert pressure on Russia’s economy and undermine sanction evasion tactics. Ukrainian officials have also appealed to Western nations for increased measures against the shadow fleet to prevent further circumvention of sanctions imposed on Russian oil exports.

As the conflict continues to unfold, attacks on maritime targets underline the growing importance of controlling sea routes in economic warfare and foreshadow potential escalations impacting regional security and environmental safety in the Black Sea.