[Vespers War]

Playing devil's advocate, it's worth noting a few things about the Project 22160 patrol boats.
1. They're tiny. The US Coast Guard's Legend-class cutters are almost triple the displacement of a 22160.
2. Their armament is a bit funky, consisting of a 76mm dual-purpose gun, a pair of 14.5mm machine guns, modular missile/torpedo launchers, and anti-personnel grenade launchers. After Moskva was promoted from ship to reef they received a Tor-M2 SAM launcher vehicle to park on their rear deck to provide air defense. Notably they don't have any of the 30mm CIWS or any light missile launchers other than the jerry-rigged Tor system.

They're oriented towards an anti-big ship or surface bombardment role, with Kalibr or Uran missiles or Paket torpedoes, with relatively little weaponry dedicated to self-defense from either surface combatants or aircraft. If I had to compare them to something Western, it would be the dedicated anti-submarine frigates from the Cold War that relied on the rest of their battle group for protection from anything else. They fill a useful role, but they are rather vulnerable on their own.

Allegedly this was an attack by MAGURA V5 drones, which are the same type that sank Tsezar Kunikov on Valentine's Day. Since November they've destroyed three landing craft (1 Serna, 1 Akula, 1 Ropucha) a Tarantul missile corvette, and now the Project 22160 patrol ship.