What happened
On September 3, the Ukrainian Navy announced that its unmanned boats struck a Russian multi-purpose support ship at the port of Sochi, according to a statement reported by financial media.
The strike reportedly triggered a violent explosion, generating thick smoke around the vessel. Ukrainian naval officials said the ship is part of Russia's maritime and energy infrastructure system.
As of the latest report, Russian authorities had not issued any public response to the claim.
Why it matters
This reported attack would mark a Ukrainian naval drone operation directly against a vessel linked to Russia's maritime and energy infrastructure, potentially signaling a broader reach in the conflict if confirmed.
The absence of an immediate Russian response leaves the details unverified and raises questions about the incident's scale and possible consequences for regional maritime security.
Key facts
Ukraine's Navy reported an unmanned boat strike on a Russian multi-purpose support ship.
The incident occurred at Sochi port on September 3 and caused a large explosion and heavy smoke.
Ukraine said the vessel belonged to Russia's maritime and energy infrastructure system, and Russia had not yet responded.
What to watch next
Any official Russian reaction, including confirmation or denial, which could corroborate or contradict the Ukrainian claim.
Whether Ukraine releases further evidence of the attack, such as imagery or operational details, and how the incident might affect naval activity near Russian ports.