These ships are designed for coastal patrol and inshore anti-submarine warfare.

The ships are fitted with a dipping sonar which is also used in Soviet helicopters.

29 ships were built for the Soviets, of which one (Sokol) remain in service with the Russian Coast Guard as of 2022.

A plan to license-produce more units in India was abandoned in favor of the indigenous Kamorta class.

Both Poltava and Hryhoriy Hnatenko were ready to be decommissioned and were left in Balaklava after the Russian annexation of Crimea;[3] their fate is unknown.