Overview
- Ukraine’s Security Service said a submersible variant of the Sea Baby, branded Sub Sea Baby, penetrated port defenses and struck a Kilo/Varshavyanka-class boat at Novorossiysk.
- Officials in Kyiv claimed the blast inflicted critical damage that put the submarine out of action, though the extent of damage has not been independently verified.
- The SBU published video of the approach and detonation, and reporters characterized the incident as the first known case of an underwater drone hitting a conventional submarine.
- Ukrainian sources said the target may have been the Rostov-on-Don and that it had Kalibr cruise missiles aboard, details that remain unconfirmed.
- Reporting describes the system’s submersible design and a charge estimated at about 600 kg, placing the operation within a broader campaign against Russian naval assets and Novorossiysk-linked oil traffic.