One page and seventeen months before, Gollevainen suggested I do ASW hydrofoils, so
finally here they are.
Small anti-submarine ship Pr.1141 Sokol (NATO: Babochka), named "Aleksandr Kunanovich" was essentialy an operational trials unit used to gather experience with operating that kind of vessels. It was laid down in 1974, launched in 1975 and commissioned in 1977 to the Black Sea Fleet. In 1990 the torpedo tubes were replaced by RPK-9 Medvedka complex, and ship was eventually decommissioned in 1994.
Russia, Pr. 1141 Babochka
Pr.11451 Sokol 2 (NATO: Mukha) were follow on's to Pr.1141. At least 4 units were planned, but only two were eventually built between 1982 and 1990. One of these served until 2001 and another until 2014, both in Black Sea Fleet.
Russia, Pr.11451 Mukha
EDIT: Btw. in some sources they aren't described as MPK's (Maly Protivolodochny Korabl - Small ASW Ship), but as KPK's (Krylyaty Protivolodochny Korabl - Winged ASW Ship).