[32][33] In 2020 it was announced that the Russian Navy would begin trials to test the installation of module containers on patrol vessels permitting such ships to carry significantly upgraded armaments tailored to different missions.

After the sinking of the Moskva, the Russian Navy began attaching Tor-M2 km missile systems onto the helicopter decks of the patrol ships.

[41][42] On 7 March 2022, Ukrainian sources claimed that the Armed Forces of Ukraine had hit the Vasily Bykov with rocket artillery off the coast of Odesa, possibly damaging it[42][43][44] On 5 August 2022, one of the ships of the class was seen entering Sevastopol with fire damage to the stern, thought by an open-source intelligence analyst to be the result of an attack the day before.

[45] On 13 August 2022, Russia announced that Vasily Bykov had opened warning fire from automatic weapons to stop the Palauan-flagged cargo ship Sukru Okan, which was navigating through the Black Sea, after it failed to respond to a Russian request for an inspection.

[47] Ukraine reportedly attacked and damaged Pavel Derzhavin with Sea Baby[48] unmanned surface vehicles (USV) on 11 October 2023.

[24] Kyrylo Budanov, the head of Ukrainian military intelligence, said that it received damage to its propeller and a 50 by 100 centimeter hole in its hull, which would require it to spend some time undergoing repair.

[50] On 5 March 2024, the Sergey Kotov was again attacked by Ukrainian forces, this time using MAGURA V5 unmanned surface vehicles while the ship was off the coast of Crimea near the Kerch Strait.