The Poti class was the NATO reporting name for a group of anti-submarine warfare (ASW) corvettes built for the Soviet Navy. The Soviet designation was Project 204 small anti-submarine ships. Built in Khabarovsk, Zelenodolsk and Kerch, these 66 units were specialized in coastal ASM control and cheaper than the class Petya or Mirka frigates. They had new D-2B gas turbines, giving them 35 knots, the best speed ever recorded by a Soviet ship of this type. Two propellers were mounted in tunnels to give a very shallow draught.

Anti-submarine weapons included four single-tube 400-mm torpedo tubes for SET-40 anti-submarine torpedoes and two RBU-6000 anti-submarine rocket launchers. The artillery weapons consisted only of a AK-725 twin automatic turret 57-mm gun with the Bars fire control radar. Air/surface situation was carried out with the help of the Rubka radar, and underwater - with the help of the MG-312 sonar.

These ships served on all four fleets of the USSR Navy: 17 on the Black Sea Fleet, 11 on the Pacific Fleet, 22 on the Baltic Fleet and 11 on the Northtern Fleet.

ASW corvette MPK-62 laid down 19 February 1964 at the Shipyard No.532, Kerch (yard No.812), launched 03 September 1964, commissioned 20 October 1964.

01 August 1986 reclassified to the trials ship and renamed to OS-573.

OS-573 was decommissioned and excluded from the lists of the Black Sea Fleet on 01 October 1987 and scrapped.