In January 2025 United Kingdom He raised his voice At the international level. The British Secretary of Defense, John Healy, explained that a nuclear submarine and two ships from Royal Navy had sighted a spy ship in the waters of the nation, and that it was the second time in just three months. The message did not stay there. The United Kingdom gave a name and a nation behind the incursion: Yantar and Russia.
Now it has been discovered that the ship has been doing much more than that.
The resurgence of a war. In recent months, NATO’s attention has moved to a less visible but increasingly critical front: the European seabed. The protagonist of this new concern is, again, The Yantara Russian spy ship that, disguised as a civil ship, toured during almost 100 days The waters of the Atlantic and the Mediterranean with an accurate objective: map and monitor the submarine cables on Europe and North America for their digital communications, their financial transactions, their energy and even their most sensitive military systems.
We know all this Thanks to the Financial Timesthat after an investigation based on interviews with NATO naval officers and former members of the Russian north fleet, as well as in radar images of the European Space Agency, he has confirmed that the Yantar came to be located on critical cables in the sea of Ireland and in front of Norway, on the strategic route to Svalbard.
The role of Gugi. The Yantar operates under the orbit of the GLAVNOYE UPRAVLENIE GLUBOKOVODNIKH ISSLEDOVII (GUGI), the director of Deep Water Research created in the Cold War and known in the West as Military Unit 40056. Based on Olenya Guba, in the Kola Peninsula, this force is located on the border between the Russian Navy and military intelligence (Gru), dedicated less to science than to espionage.
Gugi has about 50 platforms (From minisubmarines capable of reaching 6,000 meters deep to nodriza ships such as Yantar), designed to place sensors, manipulate or sabotage cables and, if necessary, destroy strategic infrastructure in a conflict scenario. Despite the blows suffered (such as the submarine fire Losharik in 2019 or the death of its historic boss by Covid), the organization has continued to receive resources Even in full war of Ukraine, which has allowed to commission new spy units.

The Yantar
The threat in the gray zone. The reactivation of Yantar’s missions Since the end of 2023 Indicates that Moscow has abandoned the initial caution he showed after invading Ukraine. Analysts like Sidharth Kaoushal (Rusi) They point that Russia has measured NATO’s red lines and is now more willing to take risks.
The plans detected in the sea of Ireland, where several cables converge that connect the United Kingdom and Ireland, fit into the Russian logic to act in The so -called “Gray Zone”: Operations of covert sabotage that do not equals an open military attack but can destabilize entire societies. In fact, Western Officers They warn That Moscow could, the case, cut energy or communications to force governments to the negotiation, or even alter the temporal signals that travel through the cables, with devastating effects in sectors such as high frequency financial trade.
European vulnerability. The United Kingdom obtains the 99% of its communications Digital of submarine cables and three quarters of its gas through underwater pipelines. Ireland, which does not belong to NATO, is a particularly exposed point: cutting its connections would be to isolate it from the continent without directly attacking an allied member. He parliamentary report British of September 19 warned that the country “could not guarantee an attack or recover in an acceptable period,” also criticizing the fragmentation of responsibilities between ministries.
In Denmark, the case of explosions of Nord Stream in 2022 evidenced the same bureaucratic dispersion. Although London has assigned the Royal Navy the mission of Protect these infrastructureexperts point out that the lack of anti -submarine frigates and patrol dependence limit the real response capacity.
The Atlantic Bastion project. To close that gap, NATO and especially the United Kingdom they consider the creation of “Atlantic Bastion”: A defensive ring of sensors, submarine drones and acoustic stations in the seabed that reinforces the control of the Greenland-Islandia-Rio-Reinian corridor. Although the plan still lacks concrete financing, its need is increasingly evident.
In parallel, surveillance ships such as The British proteus They rehearse with autonomous vehicles capable of documenting the activities of the Yantar and other GGI units, with the idea of exhibiting public evidence and generating deterrence. Admiral Gwyn Jenkins, head of the Royal Navy, He warned This month that Gugi, after a period of relative stillness, “is returning.”
Silent war. The activity From Yantar It is not an isolated case: between autumn of 2023 and November 2024, eleven Russian ships (military and supposedly civil) held a almost constant presence in British and Irish waters. Allied intelligence services suspect that Moscow already prepares sabotage scenarios against cables as a pressure measure on the countries that arm Ukraine.
While until now these operations have been maintained under the threshold of the open confrontation, the possibility of Russia “turning off” the United Kingdom or Aisle Ireland is not a crazy hypothesis. As summarized Excapitan David Fields, former British naval aggregate in Moscow: “Russian military doctrine consists of hitting first, strong and where it hurts most, to prevent the enemy from even getting rid of war.”
On that silent board, the Yantar has become the key piece of a underwater chess that threatens to redefine the limits of European security.
Image | Defense ImageryAndrey Luzik
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