Russian 'Kalibr' Missile Submarine Crippled in Ukrainian Underwater Drone Strike.

Ukrainian Submarine Drone Strike

According to TSN.ua: An underwater drone attack by Ukrainian forces has critically damaged a Russian Project 636.3 'Varshavyanka'-class submarine, a vessel designed to carry 'Kalibr' cruise missiles. The strike left the submarine immobilized in the port of Novorossiysk. With four 'Kalibr' launch systems onboard, the loss of this vessel represents a significant strategic blow to Russia's naval capabilities in the region.

Satellite Imagery and Additional Operations

Satellite images from December 16 and January 19 confirm the submarine remained stationary in the same location at Novorossiysk port, indicating it is likely out of action. In a related development, Ukraine's Security Service (SBU) also claimed responsibility for a drone attack on the Korchagin oil production platform. This maritime campaign has seen previous strikes, including:

• Ukrainian drone attacks on the Filanovsky platforms on December 11 and 12;
• The targeting of the Korchagin platform in the Caspian Sea.

The successful strike on the 'Varshavyanka' submarine marks a significant escalation in Ukraine's naval operations within the Black Sea theater. The 'Kalibr' missile system is a cornerstone of Russia's long-range strike capability, and neutralizing this platform reduces a key threat to Ukrainian cities and infrastructure. This incident underscores a broader shift in modern warfare, where asymmetric tactics and unmanned systems are increasingly used to challenge traditional naval power, altering the strategic balance in contested waters.