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Russia’s Yantar Spy Ship Raises Alarms Near UK and Ireland’s Undersea Infrastructure

Russia’s increasing focus on undersea espionage is causing concern among European officials. Moscow’s military spy vessel, Yantar, has been involved in a series of operations that target critical underwater infrastructure, including NATO's communication cables and energy pipelines, Financial Times (FT) reported on September 26.
The Yantar, a ship equipped with advanced surveillance equipment, has been spotted in the waters off Ireland and other strategic locations, including over cables linking Ireland with the UK. Its mission appears to be gathering intelligence and potentially laying the groundwork for future sabotage operations.
Yantar’s movements have sparked heightened vigilance from NATO allies, particularly in the UK, where military officials have expressed concern over its proximity to vital data networks, FT writes.

The ship is operated by Russia’s Directorate of Deep-Sea Research (GUGI), a highly secretive military unit tasked with underwater reconnaissance and sabotage. GUGI’s operations have expanded as Russia’s war against Ukraine continues, with the spy ship’s recent activities serving as a direct challenge to NATO's security architecture.
The Irish Sea and surrounding waters, considered a blind spot in NATO's defense network, are of particular concern. While the UK has a strong maritime defense system, experts believe Russia may aim to disrupt Ireland’s critical infrastructure without targeting NATO directly.
This could cause significant economic and social disruptions, particularly for countries providing support to Ukraine, according to FT.
The Yantar’s actions have prompted statements from UK officials, with Defense Secretary John Healey, who described its loitering near critical seabed infrastructure as a sign of “growing Russian aggression” on this front. NATO is closely monitoring the situation, as experts anticipate that Russia’s tactics in the region could escalate further.
Earlier, German authorities had detained the cargo vessel “Scanlark” on suspicion of espionage and possible sabotage after an operation in the Kiel Canal, according to Spiegel.

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