“During the night the armed forces of Ukraine made an unsuccessful attempt to attack the Sergei Kotov and Vasiliy Bykov patrol ships of the Black Sea fleet with three unmanned sea boats,” the defence ministry said in a statement on Tuesday.

Source: https://thenewdaily.com.au/news/2023/08/01/ukraine-denies-attack-russian-ships-black-sea/

Russian Navy patrol ship Vasily Bykov sails in the Bosphorus, on its way to the Mediterranean Sea, in Istanbul, Turkey October 16, 2019.

Source: https://gcaptain.com/russian-warship-fires-warning-shots-at-cargo-ship/