The first Russian drone attack in Ukrainian waters on 28 August 2025 was preceded by a Ukrainian drone attack on a Buyan-M FK corvette in the Sea of Azov. This attack was carried out in a coordinated manner with a first drone against the sensors in the mast and a second drone directly against the superstructure. As a result, the ship was severely damaged and forced to withdraw from its patrol mission, or possibly even to abort a Kalibr attack against Ukraine.



