Project 20381 Soobrazitel’niy Corvette

The Steregushchy class (Russian: стерегущий – “vigilant”) is the newest class of corvette in the Russian Navy. It was designed by the Almaz Central Marine Design bureau. The first ship was designated Project 2038.0 (or 20380) by the Russian Government; subsequent vessels were built to an improved design, Project 20381. At 2,200 tons it is large for a corvette and is designated as a frigate by NATO. Project 20382 “Tigr” is an export variant that has been ordered by Algeria. Project 20385 another one variant .

This type has been further developed into the Gremyashchy-class corvette.

Stoikiy (545)


The ships of the Steregushchy class are multipurpose corvettes, designed to replace the Grisha class. Such ships are used for littoral zone operations, engagement of enemy submarines and surface ships, and gun support of landing operations. The first batch being built at the Severnaya Verf shipyard in St. Petersburg consists of four ships. A second building line has been started at Komsomolsk. The lead ship of this second batch will be named Sovershennyy. The Russian Navy has publicly announced that they expect to buy at least 30 of these ships, for all four major fleets.

mpk-118-asw-corvette-murometc-photo-14098Grisha class Corvette

According to Jane’s Naval Forces News, the first vessel was commissioned on 14 November 2007.


Italics indicate estimates

Pennant number
Laid down
Steregushchiy 530 2038.0 Severnaya Verf,
St. Petersburg
21 December 2001 16 May 2006 14 November 2007 Baltic
Soobrazitelnyy 531 2038.1 Severnaya Verf,
St. Petersburg
20 May 2003 31 March 2010 14 October 2011 Baltic
Boikiy 532 2038.1 Severnaya Verf,
St. Petersburg
27 July 2005 15 April 2011 16 May 2013 Baltic
Sovershennyy 333 2038.1 Komsomolsk Shipyard,
30 June 2006 22 May 2015 projected for 2017 Pacific
Stoikiy 545 2038.1 Severnaya Verf,
St. Petersburg
10 November 2006 30 May 2012 28 May 2014 Baltic
Gromkiy 2038.1 Komsomolsk Shipyard,
17 February 2012 projected for late-2016 Pacific
Retiviy 2038.1 Severnaya Verf,
St. Petersburg
20 February 2015 2018
Strogiy 2038.1 Severnaya Verf,
St. Petersburg
20 February 2015 2018
Aldar Tsydenzhapov 2038.1 Komsomolsk Shipyard,
22 July 2015 Pacific
Rezkiy 2038.1 Komsomolsk Shipyard,
1 July 2016 Pacific


In 2007 the Indonesian Navy made an agreement in principle (pending a full contract) for four vessels of this type to replace their ageing Dutch-built Fatahillah-class corvettes. The first was to be built in Spain and fitted out in St. Petersburg, leaving open the option of Indonesian involvement in building the subsequent ships. This agreement appears to have lapsed; in 2011 Indonesia signed a deal for two Milgem-class corvettes from Turkey. Rosoboronexport have briefed Singapore and the United Arab Emirates on the vessel.

Steregushchiy (530)

The first actual contract for the export version, Project 20382 Tigr, was signed at the 5th International Maritime Defense Show in St. Petersburg in July 2011 when Algeria ordered two ships. The cost was estimated at US$120–150 million per ship. One will be delivered in 2014 and one in 2015


The Steregushchy-class corvettes have a steel hull and composite material superstructure, with a bulbous bow and nine watertight subdivisions.

Bulbous bow

They have a combined bridge and command centre, and space and weight provision for eight SS-N-25 missiles. Stealth technology was widely used during construction of the ships, as well as 21 patents and 14 new computer programs. Newest physical field reduction solutions were applied too. As a result, designers considerably reduced the ship’s radar signature thanks to hull architecture and fire-resistant radar-absorbent fiberglass applied in tophamper’s design.



Antenna post radar “Furke-2” housed in radome on top of mast “Furke-2” development NIIRT Concern PVO “Almaz-Antei” The range of radio waves – E  Radar detection of the total air and surface targets and target.

TTX given in three trim levels radar “Furke-E” (ist. – NIIRT booklet):

Option 1 Option 2 Option 3
Range Review 60 km 150 km 60 km
Sector Review azimuth 360 degrees 360 degrees 360 degrees
Sector review in elevation 6 degrees 4 ° 15 degrees
Detection range of sea targets 0.95 radio horizon 0.95 radio horizon 0.95 radio horizon
The detection range of aerial target with EPR 1 sq.m 60 km 120 km 52/60 km
War emergency power      
Range Review 40 km 150 km 60 km
Sector Review azimuth 360 degrees 360 degrees 360 degrees
Sector review in elevation 60 degrees 80 degrees 30 degrees
Height 15 km 20 km
The detection range of aerial target with EPR 1 sq.m 30km 75 km 52 km
Detection range RCC ESR of 0.02 m at a height of 5 m 10km 12-14 km 12 km
Suppression of reflections from a fixed underlying surface 50-55 dB 50-55 dB 50-55 dB
Accuracy of coordinate measuring range 50m 50m 50m
Accuracy of coordinate measuring azimuth 4-6 points rangefinder 4-6 points rangefinder 3-4 points rangefinder
Accuracy of coordinate measuring elevation 8-9 points rangefinder 5-7 points rangefinder
Range resolution 150-200 m 150-200 m 150-200 m
Azimuth discrimination 3.2 degrees 3.2 degrees 2 °
Number of simultaneously tracked targets 100 200 50
Energy consumption 8 kW 25 kW 7.5 kW
Weight of antenna post 420 kg 890 kg 90 kg
Weight of the entire radar equipment 1100 kg 2450 kg 860 kg
Mean time before failure 850 hours 850 hours 850 hours

“A Monument”

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Radar targeting RCC “A Monument” in the radome, combined with the design of the foremast Radar “Monument-E” radar or “Mineral-ME” or active phased array radar Seastar Thales (X band) – See diagram above it is within the main mast

Puma 5P-10  fire control radar

Puma 5P-10  fire control radars in the center of the picture before the main mast above the dome – control radar for the 100 mm gun and 2 illuminators for the Palash CIWS on top of the bridge before the main mast

Control and guidance – OMS “Puma” 5P-10 TV sighting (export version – 5P-10E) with radar and external opto-electronic module based on a gyro-stabilized platform GOES-140. Developed in KB “Amethyst”. The automatic control and monitoring. The system can simultaneously track the target 4-fire with automatic generation of data on the two most threatening of them. On TFR pr. 20380 set modification MSA 5P-10-02 without channel target detection (antenna under the radome of the antenna structure of the post).

Target detection range – up to 60 km
reaction time:
– Air purpose – to 5 seconds
– surfaced / Coast goal – 10-15 seconds
the transfer of fire to the next target in a stream – up to 1 sec

Combat system: Sigma -20380

1026596494Bridge Russian navy Project 20380 Baltic sea fleet ship - Invisible  photos 3Bridge SONY DSCBridge Russian navy Project 20380 Baltic sea fleet ship - Invisible  photos 4SIGMA-E Combat Management SystemSIGMA-E Combat Management System

EW Suite: TK-25E-5 ECM

TK-25E-5 ECM system is designed to inter-cept emissions of airborne and shipborne tar-get acquisition radars, weapons control radarsand anti-ship missile radar seekers, to performautomatic signal classification, todeterminemost dangerous approaches of attacks againstthe ship, and to provide jamming in threatdirections.TK-25E-5’s configuration depends on carri-er-ship type and displacement. Source

Countermeasures: 4 x PK-10 decoy launchers, 4 x PU CT-216


AZ-SO-50/AZ-SOM-50 rounds


These rockets are designed to protect small, medium and large displacement ships against guided weapons at close ranges by setting up distracting decoy targets. The rockets are launched from the KT-216 launcher of the PK-10 shipboard system.

The following three types of the caliber rockets are developed and series produced:

      • SR-50 radar jamming rocket;
      • SO-50 optronic jamming rocket;
      • SK-50 combined jamming rocket.

Basic characteristics

SR-50 SO-50 SOM-50
Caliber, mm 120 120 120
Length, mm 1,226 1,226 1,226
Weight, kg
– rocket 25.5 25 25
– payload 11 7.3 9.1
Payload type chaff IR, laser chaff, IR, laser
Operating temperature range, ° C from -40 to +50


Redut VLS

12 Redut VLS cells containing 9M96E medium-range SAMs of the S-400 system. SS-N-27 (3M-54 Klub) cruise missiles will be fitted to a larger domestic version and you can see the PU CT-216 Countermeasures at the lower left corner 

9M96 anti-aircraft missile


Redut VLS for 12 9M96E (120 km range) SAMs 


The Kashtan CIWS on the first ship was replaced in subsequent vessels by 12 Redut VLS cells containing 9M96E medium-range SAMs of the S-400 system. SS-N-27 (3M-54 Klub) cruise missiles will be fitted to a larger domestic version, Project 20385.

The export version known as Project 20382 Tigr carries either eight supersonic SS-N-26 (P-800 Oniks) anti-ship missiles or sixteen subsonic SS-N-25 ‘Switchblade’ (Kh-35E Uran). It also carries two twin-tube launchers for 533mm heavy torpedoes.

2 × 4 Uran Kh-35 (SS-N-25) launch tubesSONY DSCProject 20380 2 × 4 Uran Kh-35 (SS-N-25) launch tube

SS-N-25 ‘Switchblade’ (Kh-35E Uran) 


SS-N-25 ‘Switchblade’ (Kh-35E Uran) The missile’s power plant consists of a solid-fuel booster and a turbojet powerplant. The missile’s take-off weight is 750 kilograms, the warhead weighs 150 kilograms with a range of up to 130 kilometers.  The Kh-35U anti-ship aircraft missile (Article 78U) flies toward its target at a speed of about the 300 m/s at an extremely low altitude. The sea-skimming altitude is 5-10 meters. Owing to its high-precision radio-altimeter, the missile can skim the sea waves at an altitude of 3-5 meters at the terminal phase of trajectory. Its guidance system combines inertial guidance for during the initial flight stage and active-radar guidance during the remaining flight stage. Source

Two twin-tube launchers for 533mm heavy torpedoes

Two quad-tube launchers for 330mm torpedoes or two x two tube launchers for 533mm heavy torpedoes which is inside the ship. Source

A-190E 100mm main gun

A-190E 100mm main gun controlled by a 5P-10E system that can track four targets simultaneously

The Burevestnik A190, also referred to AK-190 and A-190, is a lightweight shipboard 100mm single-barrel, multi-purpose, automatic naval gun designed to engage surface ships, airborne and coastal targets. The gun system can be installed on frigates, patrol and missile boats with a displacement above 500 tons and features two ammunition feed systems one on each side. It can fire High Explosive (HE) projectiles with impact fuze and Anti-Aircraft (AA) projectiles with time fuze. An automatic command and control system enables a fast response (2-to-5 seconds) to incoming threats as well as makes possible practice without activating the 100mm gun. The turret offers a coverage of +/-170-degree in azimuth and -15-degree to +85-degree in elevation. Somehow the A190 is the successor to the 76.2mm AK-176M naval gun system. The A190E mount includes a magazine with 80 projectiles. This naval guns system provides a maximum rate of fire of 80 rounds per minute and can engage targets at ranges of up to 20 kilometers.

The A190E entered service with the Russian Navy’s Bora class attack crafts in 1997 and the Indian Navy’s Talwar class frigates in 2003.  Source

2 x AK 30m CIWS

Protection from air attacks is provided by the Kashtan AK 30m CIWS.  SA-N-10 ‘Grouse’ (9K38 Igla) SAM

1 x Kashtan CIWS (Project 20380 only) 

Kashtan CIWS (Project 20380) 

The command module detects and tracks threats, distributes targeting data to the combat modules, and interrogates IFF of approaching threats. The command module has a 3-D target detection radar, and an all weather multi-band integrated control system. Depending on the number of installed combat modules, the system can engage multiple targets simultaneously. The combat modules automatically track using either radar, electro-optronic control system (such as FLIRs) or both, and then engages targets with missiles and guns. The combat modules are typically equipped with two GSh-30K (AO-18K) six-barrel 30 mm rotary cannons, fed by a link-less feeding mechanism, and two 9M311 launchers equipped with 4 ready-to-fire missiles each and fed by a reloading system storing 32 missiles in ready-to-launch containers.

The guns used in the Kashtan are the GSh-30K six-barrel 30 mm rotary cannon. Individually, each GSh-30K has a higher rate of fire compared to other guns used by other CIWS such as the GAU-8 on the Goalkeeper and the M61 Vulcan on the Phalanx. Along with a high rate of fire, the fairly heavy round (390 g or 14 oz) used by the Kashtan is comparable to the DPU rounds of the GAU-8 Avenger (425 g or 15.0 oz), although the muzzle velocity (and therefore both the kinetic energy and effective range) is slightly lower, partially offsetting the high caliber and rate of fire.

The missiles used in the Kashtan are the 9M311 missiles, which is also used on the 9K22 Tunguska. The 9M311 is a SACLOS guided missile, however, it is steered automatically by the command module. The warhead weighs 9 kilograms (20 lb) and is either laser or radio fused. The warhead is a continuous-rod warhead with a steel cube fragmentation layer. The detonation of the warhead will form a complete circle of fragmentation that is 5 meters in radius, and damage or destroy anything in that circle. Source

2 x 14.5 mm pulmety KPVT MTPU

2 x 14.5 mm pulmety KPVT MTPU


Kolomna 16D49 diesel engine

Kolomna 16D49 is a four stroke V16 cylinder diesel engine with 260 x 260 mm bore and stroke, rated at 4.4 MW at 1,000 rpm .Kolomna 16D49 is a four stroke V16 cylinder diesel engine with 260 x 260 mm bore and stroke, rated at 4.4 MW at 1,000 rpm[Image: img7651.jpg]4 diesel and 2 reducers Interview with chief designer of factory “Kolomna” Valery Ryzhoviesel mod 16D49 6000 hp AC and gearboxes / reverse RDD-12000  (set up)

Ka-27 Helicopter

Ka-27 Helicopter
Name: Steregushchy class
Builders: ·Severnaya Verf

·Komsomolsk Shipyard

Operators: · Russian Navy

· Algerian National Navy

Preceded by: Grisha class
Succeeded by: Gremyashchy class
Subclasses: ·Project 2038.2 Tigr (export)

·Project 2038.5 (domestic)

Cost: US$120-150m (est. for Tigr)
Built: 2001 – current
In service: 2007 – current
Building: 4
Planned: 12
Completed: 5
Active: 4
General characteristics
Class & type: Project 2038.0 (2038.1)
Type: Corvette
Displacement: ·Standard: 1,800 tons

·Full: 2,200 tons

Length: 104.5 m (343 ft)
Beam: 11.6 m (38 ft)
Draught: 3.7 m (12 ft)
Installed power: AC 380/220V, 50 Hz, 4 x 630 kw diesel genset
Propulsion: 2 shaft CODAD, 4 Kolomna 16D49 diesels 23,664 hp (17.6 MW)
Speed: 27 kn (50 km/h; 31 mph)
Range: 3,800 nmi (7,000 km; 4,400 mi) at 14 kn (26 km/h; 16 mph)
Endurance: 15 days
Complement: 90
Sensors and
processing systems:
·Air search radar: Furke 2 (Furke-E, Positiv-ME1, SMILE Thales for export)

·Surface search radar: Granit Central Scientific Institute Garpun-B/3Ts-25E/PLANK SHAVE radar

·Monument targeting radar

·Fire control radar: Ratep 5P-10E Puma for A-190

·Sonar: Zarya-M (Zarya-ME for export) suite, bow mounted. Vinyetka low frequency active/passive towed array

·Navigation: GORIZONT-25 integrated navigation system

Electronic warfare
& decoys:
·EW Suite: TK-25E-5 ECM

·Countermeasures: 4 x PK-10 decoy launchers

Armament: ·1 × 100mm A-190 Arsenal or 130mm A-192 naval gun

·1 × Kashtan CIWS-M (Project 20380)

·2 × 4 Uran Kh-35 (SS-N-25)

·12 × Redut VLS cells (Project 20381)

·2 × AK-630М CIWS

·2 × 4 330mm torpedo tubes for Paket-NK (Paket-NK/E for export) anti-torpedo/anti-submarine torpedoes

·2 × 14.5mm MTPU pedestal machine guns

Aircraft carried: Hangar for Ka-27 Helicopter


Updated Mar 12, 2017


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