Ukraine's state security service has unveiled an upgraded sea drone that it says can now operate anywhere in the Black Sea, carry heavier weapons and use artificial intelligence (AI) for more precise targeting.

Ukraine has already used the unmanned naval drones to target Russian shipping and infrastructure in the Black Sea.

The Security Service of Ukraine (SBU) has credited strikes by the unmanned vessel known as the "Sea Baby" with forcing a strategic shift in Russia’s naval operations.

The range of the "Sea Baby" has been expanded from 1,000 kilometres to 1,500 kilometres, SBU said, and it can carry up to 2,000 kilograms of payload.

At a demonstration attended by the media, variants included vessels fitted with a multiple-rocket launcher and another with a stabilised machine-gun turret.

Sea Baby drones at an undisclosed location in Ukraine, 17 October, 2025 AP Photo

Authorities asked that the time and location of the demonstration not be made

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