The Russian USV can be positively identified as an improved Orcan type. It was sunk by the Ukrainian Navy Sargan-3000 USV.

This may be a historic first. Naval News reports,

“For the first time in history, an uncrewed surface drone (USV – uncrewed surface vessel) has destroyed another USV in combat. The Ukrainian Navy Sargan-3000 USV, operating on intelligence from the Main Intelligence Directorate (HUR), interdicted a Russian attack USV in the Black Sea. The Russian naval drone was sunk.”

From the Coast Guard’s perspective, it seems this defensive use of a USV might be significant.

Based on some of the video, It appears the Ukrainian USV was probably directed to the target by an unmanned air vehicle.