Project 20380 Steregushchy Class corvettes are the new multirole vessels being built by the JSC Severnaya Verf shipyard and Amur Shipbuilding Plant for the Russian Navy. Steregushchy Class corvettes are intended to replace the Grisha Class corvettes.
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Steregushchy Class can be deployed in coastal patrol, escort and anti-submarine warfare (ASW) operations. The vessels can engage surface ships, submarines, aircraft and shore-based targets.
The first corvette in its class, Steregushchy, was laid in December 2001 and launched in May 2006. It began sea trials in November 2006, for commissioning into the Baltic fleet in November 2007.
The second ship in class, Soobrazitelny, was laid in May 2003 and launched in March 2010. It was delivered to the Russian Navy in July 2011.
Boyky was laid in July 2010 and launched in April 2011 for the commissioning in 2013. Sovershenny was laid in June 2006. It is expected to be launched in 2013 for the commissioning in 2014. Stoyky was laid in November 2006. It was launched in May 2012 for the commissioning in 2013. Construction of the sixth ship in class, Gromky, began in February 2012.
In June 2011, United Shipbuilding Corporation (USC) signed a contract with Russia’s official weapons exporter Rosoboronexport to supply two new Tiger Class corvettes for the Algerian Navy. Tiger Class is an export variant of the Steregushchy Class corvette.
Steregushchy Class design features
Steregushchy Class was designed by the Almaz Central Marine Design Bureau. The corvette incorporates a steel hull, composite superstructure and a bulbous bow. The hull is divided into nine watertight subdivisions.
The stealthy design significantly reduces the radar signature of the ship. The acoustic, infra-red, magnetic and visual signatures were also reduced by incorporating the stealth technology in the construction of the warship.
Steregushchy Class has an overall length of 105m, width of 13m and draft of 3.7m. Full load displacement of the ship is 2,100t. The vessel can sail at a maximum speed of 27kt. It can complement 100 personnel, including helicopter maintenance crew.
Corvette command and control systems
The Steregushchy Class features Sigma combat information management system. The system collects information from the radars and sensors and provides real-time situational awareness. It also allows the ship to exchange intelligence information with other naval units in the battle-group.
Steregushchy Class weapons and missiles
The Steregushchy Class is armed with a combination of missile systems, including Kh-35 missiles and 3M-54 Klub missiles. Two Kashtan anti-aircraft systems on-board provide close-in air defence against anti-ship missiles, aircraft and small surface targets. Beginning from Soobrazitelny, the new ships in class are being armed with the REDUT-K SAM system, in place of Kashtan system.
The main gun fitted forward is an Arsenal A-190 100mm naval gun. Two 30mm six-barrelled AK-630M automatic gun mounts are also installed on the vessel.
The AK-630M can fire up to 5,000 rounds a minute for a maximum range of 5,000m. Steregushchy is fitted with two quadruple torpedo tubes for Paket-E/NK antitorpedo missile.
Sensors / radars and helicopter deck
The sensor suite consists of a Furke-E 3D, E/F band air search radar, a Garpun-B/3Ts-25E/Plank Shave surface search radar, Hot Flash radar, Ratep 5P-10E Puma fire control radar and a Monument targeting radar. The corvette is also equipped with a Zarya-ME sonar suite and Vinyetka-EM towed sonar array.
Steregushchy Class has a stern helicopter deck and hangar, to support the operations of a Ka-27 helicopter for use in reconnaissance and anti-submarine missions.
Countermeasures and propulsion of the Russian Naval vessels
The countermeasures equipment includes a TK-25E-5 ECM system and PK-10E decoy system. The TK-25E-5 can tap emissions of air and surface target acquisition radars, fire control radars and ASM radar seekers.
PK-10E is equipped with a KT-216-E launch system, firing AZ-SO-50/AZ-SOM-50 rounds to deceive radar and optically guided incoming missiles.
Steregushchy Class corvettes are powered by a combined diesel and diesel (CODAD) propulsion system.
The four 16D49 diesel engines develop a total power output of 23,320hp. Four diesel sets on-board generate 2,520kW electricity for shipboard lighting.
The engines are installed on damped platforms and the diesel gen sets are hooked to the second deck to achieve noise abatement.
The propulsion system provides a maximum speed of 27kt and a cruising range of 4,000mi at 14kt speeds. Steregushchy Class has an endurance of 15 days.
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