For decades, Russia’s Kilo-class submarines were among the most recognizable diesel-electric attack submarines in the world. Known for their quiet operation and relatively low cost, the boats became ...

As it tried to demonstrate its continuing ability to fight, Ukraine said it had used drones to inflict serious damage on a Russian Kilo-class submarine at a Black Sea port. By Maria Varenikova ...

Ukraine said Monday it carried out an underwater drone strike that critically damaged a Russian Kilo-class submarine docked in the port of Novorossiysk, marking the first known attack of its kind. The ...

Images released by the SBU on 15 December 2025 showed the moment of the purported UUV explosion, with the Kilo II submarine seen just to the left of the detonation. (Security Service of Ukraine) The ...