The Russian Ministry of Defense claimed that Ukrainian unmanned semi-submersibles attacked two Black Sea Fleet patrol ships, the 'Sergey Kotov' and 'Vasily Bykov,' southwest of Sevastopol. Russia asserted that the patrol ships detected and destroyed all three semi-submersibles while escorting civilian transport vessels.

Russian MoD claimed Ukrainian unmanned semi-submersibles attacked Black Sea Fleet patrol boats and were destroyed.

Ukraine attempted to attack Black Sea Fleet patrol vessels with three unmanned surface vessels located 340 km southwest of Sevastopol on the night of July 31-August 1

Russia claims to have repelled the attack and destroyed all three Ukrainian USVs

The Russian Ministry of Defense accused Ukraine of attempting to attack two Black Sea Fleet patrol boats with unmanned semi-submersibles.

Explosions were reported near Sevastopol following the alleged Ukrainian attack.

Russian MoD claimed that Ukrainian unmanned boats attacked the patrol ships "Sergei Kotov" and "Vasyl Bykov" 340 km southwest of Sevastopol on August 1, 2023.