Ukrainian underwater drone damages Russian submarine in alleged first strike of its kind

 December 26, 2025

Ukraine has pulled off a groundbreaking naval operation that could shift the balance in the Black Sea conflict.

According to the Military Times, the Security Service of Ukraine (SBU) released video evidence of the first-ever underwater drone attack on a Russian Kilo-class submarine at the Novorossiysk naval base.

The footage, posted on Dec. 15 on an official government-affiliated website, captures the Sub Sea Baby drone striking the submarine’s stern with a powerful explosion. The blast appears to have inflicted serious damage to critical components of the Russian vessel. While exact details remain unverified by independent sources, the visuals suggest a significant blow to Moscow’s naval presence.

Historic Strike Redefines Naval Warfare

The SBU hailed the operation as a landmark event, declaring, “For the first time in history, underwater drones ‘Sub Sea Baby’ blew up the Russian submarine of the class 636.3 – as a result of the explosion, it suffered critical damage and was put out of action.” Such bold claims signal Ukraine’s intent to challenge Russian dominance in the region with innovative tactics, though one wonders if the hype matches the actual strategic gain.

Prior Ukrainian efforts with Sea Baby surface drones had already pushed Russian ships out of Sevastopol Bay, forcing them to hunker down in Novorossiysk. This latest underwater strike shows a relentless drive to keep the pressure on, even if it risks escalating tensions further.

Russia’s Ministry of Defense, predictably, dismissed the attack as a failure, insisting all vessels at the base remain unscathed. Their denial feels like standard playbook deflection, especially when faced with footage that tells a starkly different story.

Footage Reveals Ukrainian Ingenuity

The video itself seems to come from hacked security cameras around the Novorossiysk port, pointing to Ukraine’s ability to penetrate enemy networks. This level of cyber prowess adds a layer of sophistication to their military approach, raising questions about what else they might access.

Such infiltration likely allowed Ukrainian forces to monitor Russian movements in real time before launching the Sub Sea Baby. It’s a reminder that modern warfare extends far beyond physical weapons into the shadowy realm of digital espionage.

Details about the underwater drone remain scarce, with the SBU keeping tight control over information. All that’s public is that the Sub Sea Baby was custom-built for their operations, shrouded in secrecy down to the manufacturer’s identity.

Technology Shrouded in Mystery

An anonymous Ukrainian industry source revealed that almost no one knew of the operation beforehand due to its highly classified nature. This secrecy underscores a deliberate strategy to protect technological edges in a conflict where innovation can mean survival.

Naval News speculated that the Sub Sea Baby functions like an autonomous torpedo, possibly using waypoints to navigate before independently homing in on its target. Their report noted, “This could explain how the Sub Sea Baby was able to navigate inside the naval base and towards the submarine pen, a route that requires several turns in confined spaces.”

If accurate, this capability marks a leap forward in precision strikes within tightly guarded areas. Yet, without confirmed specs, it’s hard to gauge whether this is a game-changer or a one-off success against an unprepared foe.

Broader Implications for the Conflict

The attack, if as damaging as Ukraine claims, could force Russia to rethink its naval positioning and security protocols. It’s a small victory that might carry outsized psychological weight, showing that even fortified bases aren’t safe from creative adversaries.

Still, one must temper enthusiasm with caution, as unverified reports can inflate perceptions of impact. The real test lies in whether Ukraine can sustain this momentum without provoking a disproportionate Russian response that could spiral beyond control.

This incident highlights a troubling trend of escalating technological warfare, where drones and cyber tactics erode traditional defenses. For those of us who value stability over endless conflict, it’s a sobering signal that peace remains elusive when innovation serves destruction rather than dialogue.

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