(KYIV, UKRAINE) – Ukrainian forces have scored a major naval victory by disabling a Russian submarine in Novorossiysk using an advanced underwater drone, marking a new era in naval warfare and leaving the Russian Black Sea fleet with fewer safe harbours. The Varshavyanka-class submarine targeted in the strike, valued at around $500 million, carried Kalibr cruise missiles used against Ukrainian cities.
The operation, conducted jointly by the Security Service of Ukraine and the Navy, relied on the submerged “Sub Sea Baby” drone. It bypassed layered port defences, including coastal radar, patrol aircraft, surface boats, diver-detection sonar, booms, nets, and continuous surveillance, exploiting blind spots while moving quietly along the seabed. The final approach took hours of careful navigation, timed to coincide with reduced patrol activity. Pre-programmed waypoints and autonomous guidance ensured the drone reached the pier accurately, while intelligence support allowed monitoring of ship positions in real time.
Ukrainian Navy spokesperson Dmytro Pletenchuk noted Novorossiysk had been considered exceptionally secure, with remaining Russian vessels concentrated there to avoid attacks. The strike underlines a critical vulnerability: submarines are exposed when stationary, and even sophisticated Russian defences can be outmaneuvered.
Underwater drones fit into Ukraine’s broader asymmetric warfare strategy, offering quiet electric propulsion, low-profile hulls, and inertial navigation that avoids constant communication, making detection and jamming extremely difficult. With each drone costing only thousands of dollars, Ukraine is forcing Russia to stretch already limited resources across a new operational domain.
The wider implications are significant. Ukraine can now conduct systematic underwater operations across the Black Sea, putting submarines, frigates, corvettes, landing ships, tankers, fuel piers, pipelines, and sensor networks at risk. Russian missile launches from Black Sea platforms are expected to drop further as carriers are dispersed to reduce losses, undermining Russia’s ability to project power from the region. The strike represents both a symbolic and strategic blow, reinforcing Ukraine’s growing capacity to hit high-value targets deep inside Russian defences without risking personnel or expensive assets.
