In a significant escalation of naval warfare tactics, Ukraine has announced it successfully struck a Russian submarine using underwater drones. The attack reportedly occurred at the port of Novorossiysk on the Black Sea coast.
A First-of-its-Kind Naval Strike
Ukraine's domestic security service, the SBU, released video evidence on December 15, 2025, purporting to show a large explosion at the Russian port facility. This marks the first time Kyiv has claimed to have targeted and hit a Russian submarine with this type of unmanned maritime weapon. The use of sophisticated underwater drones represents a new chapter in the conflict, extending the battlefield beneath the waves.
Details of the Attack
The strike was carried out against a key Russian naval asset in Novorossiysk, a major hub for the Black Sea Fleet. While the exact model of the submarine and the extent of the damage have not been independently verified by international observers, the Ukrainian claim underscores their evolving capability to project force at sea. The attack demonstrates a continued effort to challenge Russian naval dominance in the region, despite not having a traditional navy of its own.
The video released by the SBU via CNN Newsource provides visual confirmation of a powerful detonation occurring within the port confines. Analysts suggest such operations aim to degrade Russian military logistics and morale by striking assets even within defended harbours.
Strategic Implications for the Black Sea
This successful drone strike, if confirmed, carries substantial strategic weight. It signals that Russian naval bases are no longer safe havens from Ukrainian ingenuity. The development and deployment of effective underwater drones could force Russia to reconsider how it protects its valuable submarines and surface ships, potentially diverting resources and attention.
The attack on December 15 adds to a series of Ukrainian successes against the Black Sea Fleet, which has seen several of its vessels damaged or sunk since the full-scale invasion began. It reinforces the view that maritime drones—both surface and now subsurface—have become a pivotal asymmetric tool for Ukraine in countering a larger, more powerful foe.
