Krivak-class frigate

A Krivak II-class frigate Pytlivyy in Sevastopol Bay, 2009.
Class overview
Name	Krivak class (Project 1135)
Builders	Yantar Shipyard Zhdanov Shipyard Baltic Shipyard Zaliv Shipyard
Operators	Soviet Navy  Soviet Border Troops  Russian Navy  Russian Coast Guard  Ukrainian Navy  Indian Navy  Korean People's Navy
Preceded by	Riga class
Succeeded by	Neustrashimy class Admiral Gorshkov class
Subclasses	Talwar class Admiral Grigorovich class
Planned	42
Completed	40 (32 × 1135, 1135M, 11352/11353 and 8 × 11351)
Cancelled	2 (2 × 11351)
Active	4 active in Russia (1 × 1135, 1 × 1135M, 2 × 11351)
Lost	1
Retired	35
Preserved	1
General characteristics
Type	Frigate / Patrol ship SKR (Russian classification)[1]
Displacement	Standard: 3,300 tons Full: 3,575 tons
Length	405.3 ft (123.5 m)
Beam	46.3 ft (14.1 m)
Draught	15.1 ft (4.6 m)
Propulsion	2 shaft; COGAG 2 × M-8k, 40,000 shp (30,000 kW) or DK59 13.5 MW or DT59 16.9 MW gas-turbines 2 × M-62 7.4 MW or DS71 13.4 gas-turbines (cruise), 14,950 shp (11,150 kW)
Speed	32 knots (59 km/h)
Range	4,995 nmi (9,251 km) at 14 knots (26 km/h)
Complement	200
Sensors and processing systems	Radar: 1 MR-755 Fregat-M/Half Plate air/surf search Sonar: Zvezda-2 suite with MGK-345 Bronza/Ox Yoke bow mounted LF, Ox Tail LF VDS Fire control: Purga ASW combat system, 2 Drakon/Eye Bowl SSM targeting, 2 MPZ-301 Baza/Pop Group
Electronic warfare & decoys	Start suite with Bell Shroud intercept, Bell Squat jammer, 4 PK-16 decoy RL, 8 PK-10 decoy RL, 2 towed decoys
Armament	1 × 4 URK-5 (SS-N-14 'Silex') SSM/ASW missiles 2 × Osa-MA SAM systems SA-N-4 'Gecko' SAM (40 missiles) 4 × 76 mm AK-726 guns (2×2) (Burevestnik M had 2×1 100 mm AK-100 guns) 2 × RBU-6000 anti-submarine rockets 2 × 4 533 mm torpedo tubes
Aircraft carried	Ka-27 on Krivak III only

The Krivak class, Soviet designation Project 1135 Burevestnik (storm petrel), are a series of frigates and patrol ships^[1] built in the Soviet Union primarily for the Soviet Navy since 1970. Later some sub-branches, like the Nerey (Nereus) were designed for coastal patrol by the KGB Border Troops. Until 1977, the ships in the class were considered to be large anti-submarine warfare vessels.

These ships are commonly known by their NATO reporting class name of Krivak and are divided into Krivak I, Krivak II, Krivak IV (navy), and Krivak III (coast guard) classes.