Russian submarine blown up by Ukrainian Security Service drones for first time in history – photo, video

15 December 2025, 17:38
Russian submarine blown up by Ukrainian Security Service drones for first time in history – photo, video
An explosion erupts in a harbour crowded with military vessels, as seen in footage showing a strike on Russian naval assets. Photo: Security Service of Ukraine

The Security Service of Ukraine (SSU) has reported that it has, for the first time in history, blown up a Russian submarine using Sub Sea Baby drones.

Source: Security Service of Ukraine on its website

Details: The submarine was struck while in the port of Novorossiysk, Russia.

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Sub Sea Baby drones hit a Russian Project 636.3 Varshavyanka-class submarine (NATO designation: Kilo). The operation was carried out by fighters from the SSU's 13th Main Directorate of Military Counterintelligence, in coordination with the Ukrainian Navy.

Quote: "An explosion caused critical damage to the submarine, putting it effectively out of action. The submarine carried four launchers for Kalibr cruise missiles, which the enemy uses to strike Ukrainian territory."

More details: The Security Service said the Varshavyanka submarine is worth about US$400 million, although sanctions may have driven the cost up to US$500 million. Its hull can absorb sound, helping it evade sonar detection.

Quote: "The damaged submarine was forced to remain in Novorossiysk due to successful special operations by Sea Baby uncrewed surface vessels, which have pushed Russian warships and submarines out of Sevastopol Bay in temporarily occupied Crimea."

Russian Varshavyanka submarine before the hit
Russian Varshavyanka submarine before the hit
Photo: SSU

Read more: The war at sea rages on: Defence Intelligence of Ukraine explains Russia's counter to maritime drones and its effectiveness

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