The Petya class was the NATO reporting name for a class of light
frigates designed in the 1950s and built for the Soviet Navy in the 1960s.
were the first gas turbine-powered ships in the Soviet navy. The role of these
ships was anti-submarine warfare in shallow waters. The specification was issued
in 1955 and design approved in 1956. The second series of these ships, which received
the number Project 159A, was built from 1966 to 1972 and amounted to 29 ships.
They replaced the RBU-2500 with the more powerful RBU-6000, installed a second
torpedo tube and upgraded the radar system. A total of 56 ships were built in
Displacement was 970 tons under standard load and 1110
tons under full load. The ship's profile saw the mass of the superstructure contained
forward of midships with low-profile funnels aft of this. A main mast was set
along the aft section of the superstructure. Power was from a CODAG (COmbined
Diesel And Gas) arrangement which paired 2 Gas turbines of 30000 horsepower with
1 Diesel unit of 6000 horsepower - providing speeds reaching 32 knots and ranges
out to 2000 nautical miles. A three shaft machinery layout was chosen with the
central shaft powered by diesel engines for economical cruising and the two wing
shafts powered by gas turbines for speed. Gun armament was two twin 76 mm gun
turrets which were controlled by a single radar director. Anti-submarine armament
consisted of two RBU-6000 anti-submarine rocket launchers and a two launchers
for 400 mm anti-submarine torpedoes.
Frigate SKR-110 laid down 20 December
1966 at the Shipyard No.820, Kaliningrad (yard No.190), launched 07 May 1967,
commissioned 30 December 1967 and was assigned to the Baltic Fleet.
July 1970 the ship transferred from Baltic Fleet to the Black Sea Fleet.
29 May 1991 - reclassified to trials ship with rename to OS-226.
SKR-110 was excluded from the lists of the Black Sea Fleet on 18 July 1994 and
| Displacement (tons):|
nmi (14 knots), 1500 nmi (16,5 knots), 800 nmi (18 knots)|
2x15000 hp M-2B gas turbines, 1x6000 hp 61B diesel, 2 fixed pitch propellers,
1 variable pitch propeller, 1x400 kW diesel-generator, 1x200 kW diesel-generator,
1x100 kW diesel-generator
76 mm AK-726 - Fut-B fire control system|
2x5 400 mm PTA-40-159 torpedo tubes
(10 SET-40 torpedoes)
2x12 RBU-6000 Smerch-2 (RGB-60) - Burya fire control
MR-302 Rubka radar, Bizan-4B ESM radar system, Don navigation radar, MG-312 Titan
sonar, MG-311 Vychegda sonar|