Buyan-class corvette

Buyan Class Corvettes (Project 21630), Russia

Project 21630 Buyan Class corvettes are in service with the Russian Navy. Three Buyan Class corvettes were built by JSC Almaz Shipbuilding in St. Petersburg. The vessels serve the Caspian Flotilla of the Southern Military District.

Buyan Class corvettes can conduct maritime patrol missions along the 200-mile maritime economic zone of Russia. The ship can perform missions in shallow waters and river mouths, particularly for delivering troops directly to land.

Project 21630 Buyan

NATO: Buyan Class

The “Volgodonsk” (702)
Name Yard № Laid Down Launched Commissioned Note
Astrakhan №701 30.01.2004 7.10.2005 1.09.2006
Kaspiysk №702 25.02.2005 6.05.2011 20.12.2011 from 01.2007 – Volgodonsk
Makhachkala №703 24.03.2006 27.04.2012 4.12.2012

Caspian Flotilia: Astrakhan, Volgodonsk, MakhachkalaFleets

Hull Numbers

Astrakhan: 101(2006), 012(2007), 017(2016)
Volgodonsk: 702(2011), 161(2011), 014(2012), 018(2016)
Makhachkala: 162(2012), 015(2013), 020(2016)

Small Artillery Ship - Project 21630 Small Artillery Ship – Project 21630


The keel for the first corvette in class, Astrakhan, was laid down in February 2005 at Almaz Shipyard in St. Petersburg. The ship was commissioned into the Russian Navy in January 2006. Volgodonsk was launched in May 2011. It was demonstrated to the public during the International Maritime Defence Show (IMDS-2011) in St. Petersburg. The ship was delivered in December 2011 and commissioned into the Russian Navy in June 2012.

The third and the last ship in class, Makhachkala, was laid down in March 2006 and launched in April 2012. The delivery of the ship was delayed due to the installation delays of the 100mm gun mount. Makhachkala completed state sea trials in October 2012. The ship was delivered to the Russian Navy in December 2012. It was commissioned into Caspian Flotilla in February 2013.

Buyan-M missile variants and vessel design features

Project 21631 (Buyan-M) corvettes, the missile variants of Project 21630, are being constructed at the Zelenodolsk shipyard. The new vessels are expected to be equipped with missiles, artillery weapons and electronic countermeasure equipment. An export variant known as Project 21632 Tornado is also being proposed.

Project 21631 Buyan-M

Name Yard № Laid Down Launched Commissioned Note

Almaz Shipyard, Sankt-Peterburg – 0+1 unit

№801 not completed

Shipyard named after A.M.Gorky, Zelenodolsk – 5+4 units

Grad Sviyazhsk №631 27.08.2010 9.03.2013 12.2013  
Uglich №632 22.07.2011 10.04.2013 12.2013  
Velikiy Ustyug №633 27.08.2011 21.05.2014 15.11.2014  
Zeleny Dol №634 29.08.2012 2015 13.11.2015  
Serpukhov №635 25.01.2013 2015 13.11.2015  
Vyshny Volochyok №636 29.08.2013 plan 2017 under construction
Orekhovo-Zuevo №637 29.05.2014 plan 2018 under construction
Ingushetiya №638 29.08.2014 plan 2018 under construction
Grayvoron №639 10.04.2015 plan 2019 under construction

Missile variant of Project 21630 Buyan, with guided missiles

Grad Sviyazhsk (021)

General characteristics – Project 21631

Displacement (tons):
Full load: 949
Dimensions (m):
Length: 74,1
Beam: 11
Draft: 2,6
Speed (knots): 25
Range: 2500 nmi (12 knots)
Autonomy (days): 10
Propulsion: 4×3700 hp MTU 16V4000M90 diesels (from №636 – 4×4350 hp CHD622V20 diesels), 2 pump-jets
Armament: 1×8 3S14-21631 UKSK 3K14 launchers («Kalibr» guided missile complex (3M14 missiles))
2×6 3M-47 «Gibka» «Igla-1M» SAM system launchers
1×1 100 mm A-190-01 – 5P-10-03 «Laska» fire control system
1×12 30 mm AK-630M-2 Duet
2×1 14,5 mm MTPU
Electronics: 5P-26 «Pozitiv» air/surface search radar, MR-231 navigation radar
PK-10 «Smely» RL decoy (2? KT-216 launchers) – AZ-SO-50, AZ-SR-50, AZ-SOM-50, AZ-SK-50, AZ-SMZ-50 rounds
Complement: 52


Caspian Flotilia: Grad Sviyazhsk, Uglich, Velikiy Ustyug
Black Sea Fleet: Zeleny Dol, Serpukhov

Hull Numbers

Grad Sviyazhsk: 021(08.2013)
Uglich: 022(2013), 652(2016)
Velikiy Ustyug: 023(2014), 651(2016)
Zeleny Dol: 602(08.2015)
Serpukhov: 603(7.09.2015)


Kazakhstan: plan 6 units
Project 21632 Tornado: . ?/560 tons, 61,45×9,6×2 m, 3M24E «Uran-E» anti-ship missiles launchers, 3M-47 «Gibka» SAM system «Igla» launcher, 1×1 100 mm A-190, 2×6 30 mm AK-306, 2×1 14,5 mm MTPU, 1 DP-64 grenade launcher, «Pozitiv-ME1.2» radar, «Anapa-ME» sonar, MTU 16V4000M90 diesels, 26 kts, 2300 nmi (12 knots), 2×300 kW diesel generators, crew – 36, 10 days

Russian Buyan M Corvette Project 21631



Buyan Class is a river-sea type corvette designed by Zelenodolsk Design Bureau. The design incorporates stealth features to reduce the radar cross section. The flexible open architecture of the ships allows for modifications according to the future requirements.

The ship has a length of 62m, beam of 9.6m and a draft of two metres. Buyan Class has a displacement of about 500t. Each vessel can accommodate a crew of 29 to 36.

Weapons fitted to the Russian naval vessels


The main gun fitted on the bow deck is a single A-190 100mm cannon. Close-point defence is provided by two AK-306 30mm close-in weapon systems. The ship is also armed with A-215 Grad-M naval multiple launch rocket system. The system can fire up to 40 122mm rockets against onshore targets.

1×6 3M-47 “Gibka” “Igla-1M” SAM system launcher
1×40 122 mm MS-73M “Grad-M” launcher
1×1 100 mm A-190-01 – 5P-10-03 “Laska” fire control system
2×6 30 mm AK-306
2×1 14,5 mm KPV

A-190 100mm cannona60887d78983e53383bcbf65279cdc65

Burevestnik manufactures two variants of 100-mm А190 Lightweight Multipurpose Naval gun: А190E and А190-01.

100-mm А190 Lightweight Multipurpose Naval Gun is a single-barrel turreted automatic gun that may be installed on ships with the displacement of 500 t and more. Upon the operator’s command the fire control module automatically turns the artillery system to standby or combat-ready position, ensures ammunition selection and feeding, gun laying and firing. As a result, the artillery system has minimum response time and high rate of fire.

Main technical data

Rate of fire, rpm up to 80
Maximum firing range, km over 20
Elevation, degree -15 to +85
Training, degree ±170
Projectile weight, kg 15,6
Number of ready-to-fire rounds 80
Weight, t 15

А190 Naval Gun can fire HE (impact fuze) and AA (time fuze) case ammunitions.
The main advantages of А190 system:
– automatic firing mode with main and back-up control means and the capability to operate in EW battlefield environment;
– minimal dead zones when engaging various target types;
– fast reaction (2…5 sec) to counter air threats. Quick shift of fire when engaging multiple targets.

The upgraded version designated as А190-01 provides significant increase in combat effectiveness. High survivability, reliability and combat effectiveness make it possible to operate the gun in various environments day and night all year around. Data

AK-306 30mm close-in weapon systems

Design of the AK-630 (A-213) gun system started in 1963.  The first prototype was made in 1964 and trials were conducted until 1966.  The trials of the complete system with radar and controls went on until 1976 when the system was accepted for service.  Production started in 1969 in Tula, with a modified AK-630M (A-213M) system accepted into service in 1979.  These systems are the main close-in defense systems on modern Russian ships.

The gun itself is a 6 barrel Gatling gun designated as AO-18.  The barrels are in a single block, having exhaust-driven joint automatics.  They are belt fed with a flat magazine in the AK-630 and a drum magazine in the AK-630M.  These weapons form a part of a complete self-defense system called A-213-Vympel-A, which includes gun, radar, optical and TV control systems.  A single MP-123 Vympel system can control two 30 mm guns or one 30 mm and one 57 mm gun.  This system can engage air targets at ranges up to 4,000 m (4,400 yards) and surface targets at ranges up to 5,000 m (5,500 yards).  The TV control system can detect MTB sized ships at the distance of 75 km (40 nm) and the fighter-size air targets at 7,000 m (7,600 yards).  This system is completely automatic and does not require human supervision although it can be directed from optical control posts in case of damage or for firing on shore targets. 

30-мм шестиствольный зенитный автомат. АО-18Л (ГШ-6-30Л) 30 mm six-barrel anti-aircraft gun. AO- 18L ( GSH- 6-30L )


The AK-306 (A-219) system was a modification of the AK-630 (A-213) system for use on light ships, like air cushion craft, ekranoplanes and small displacement motor boats.  Externally, there was no difference between AK-306 and AK-630 guns, but internally instead of using the exhaust to power the automatics, the AK-306 (A-219) used electricity.  This version also lacked radar control, being only optically guided, hence making it less of a anti-missile weapon and more of a surface-to-surface weapon.  The design started in 1974 and the system was accepted into service in 1980.  By 1986, 125 systems were in service.

Designation 30 mm/54 (1.2″) AO-18
Ship Class Used On AK-630
Most of the modern and modernized ships from Kirov class BCs to missile boats
Kasatka (Pr. 1238) air cushion craft, Vozh (Pr. 1248) and Riyavka (Pr. 1249) river gunboats
Baskintsak (Pr. 1595) tankers, Lida (Pr. 1075.0) Inshore minesweeper and others
AK-630M1-2 “Roy”
P-44 (Pr. 206.6) missile boat
3M87 “Kortik”
CV Admiral Kuznetsov (Pr. 1143.5), BC Admiral Nakhimov (Pr. 1144), Neustrachimy (Pr. 1154) class frigates
Date Of Design 1963
Date In Service AK-630:  1976
AK-630M:  1979
AK-306:  1980
3M87:  1989
Gun Weight AO-18 (for AK-630):  under 452 lbs. (under 205 kg)
AO-18L (for AK-306):  341.7 lbs (155 kg)
GSh-6-30K (for AK-630M1-2):  352.5 lbs. (160 kg)
Gun Length oa 64.13 in (1.629 m)
Bore Length 63.78 in (1.620 m)
Rifling Length 57.48 in (1.46 m)
Grooves 16
Lands N/A
Twist N/A
Chamber Volume N/A
Rate Of Fire AK-630:  4,000 – 5,000 rounds per minute
AK-630M:  4,000 – 5,000 rounds per minute
AK-630M1-2:  10,000 rounds per minute
AK-306:  600 – 1,000 rounds per minute
3M87:  10,000 rounds per minute
Palash:  1,000 rounds per minute
Elevation With 1.2 lbs. (0.54 kg) HE/Frag Shell
Max Ballistic Range 8,860 yards (8,100 m)
Self Liquidation range 5,470 yards (5,000 m)
Effective Targeted Range  4,375 yards (4,000 m)


TheAstrakhan” (012)

A-215 Grad-M naval multiple launch rocket systemce38d9d9a19849c15408601de28fb0c9

The BM-21 Grad (hail) multiple launch rocket system entered service with the Soviet Army in 1963. It was produced for a long period of time in large quantity both for the Soviet Army and for export customers. Currently the BM-21 Grad is in service with more than 30 countries. It is the most widely used artillery rocket system in the world. There are numerous variants, copies and modifications of this vehicle.

The BM-21 Grad has 40 launching tubes for 122-mm rockets. The standard rocket with a HE-FRAG warhead is 2.87 m long and weights 66.6 kg. Warhead itself weights 18.4 kg. It also fires rockets fitted with incendiary, chemical, smoke, illumination or cluster warheads. Cluster warheads contain anti-tank or anti-personnel submunitions. A number of specialized warheads were developed for this vehicle. A full salvo of the BM-21 Grad covers area of 0.8 -1 hectares.

A-215 Grad-M, naval multiple launch rocket system, fitted on amphibious assault ships

Entered service 1963
Caliber 122-mm
Number of tubes 40
Rocket weight 66.6 kg
Warhead weight 18.4 kg
Firing range 1.6 – 21 km
Full salvo duration 20 s
Reloading time 7 minutes


The air defence capabilities are complemented by a four-tube 3M47 Gibka naval missile launcher firing Igla or Igla-S anti-aircraft missiles. The ship also houses gun mounts for 14.5mm and 7.62mm machine guns.

Four-tube 3M47 Gibka naval missile launcher

GHIBKA 3M-47 (3M47 Gibka) Turret Mount is intended for guidance and remote automated launching of IGLA type missiles to provide protection of surface ships with displacement of 200 tons and over against attacks of anti-ship missiles, aircraft and helicopters in close-in area.Version 1 with 4 SAM

The 3M-47 Ghibka turret was designed by Altair Naval Radio Electronics Scientific Research Institute and is manufactured by the Ratep Joint Stock Company. 

Ghibka 3M-47 (3M47 Gibka) Turret Mount is intended for guidance and remote automated launching of IGLA type missiles to provide protection of surface ships with displacement of 200 tons and over against attacks of anti-ship missiles, aircraft and helicopters in close-in area..

The turret mount utilizes information from ship’s radars. The missiles are equipped with homing head with optical tracking (passive) and artifical thermal noise detector. The system is design to resist natural (background) and artificial jamming conditions. The turret mount is equipped with 9M39 and 9M342 anti-aircraft guided missiles. 

To date, 3M-47 Ghibka is installed on Project 21630 “Buyan” class corvettes, Project 21631 “Buyan-M” class missile corvettes and will be installed on the future Mistral type LHD for the Russian Navy.

Version 1 with 4 SAM
Version 2 with 8 SAM



The turret is remotely operated and can be steered towards targets detected by the Positiv, Furke or Fregat naval radar systems. Final aiming is achieved at the control module through a TV sighting system. According to constructor specifications, the visual detection range of an aircraft through the control module is 12 to 15 Km.

Short-range shipborne surface-to-air missile system
Visual detection range at the control module
12 to 15 Km
Guidance sector (in degrees)
Azimuth: +150 to -150 | Elevation: 0 to 60
Number of simultaneously engaged targets
Firing mode
Single | Salvo
Number of launch modules
Version 1: 2 | Version 2: 4
Number of SAM per launch module
SAM Type
Igla (9M39) | Igla-S (9M342)
Reaction time
< 8 seconds
Manual loading time for 1 module by 1 man
< 3 minutes
Turret mount weight (with 2 launch modules)
< 650 Kg


Ghibka 3M-47 Control Module & Workstation

GHIBKA 3M-47 Turret Mount is intended for guidance and remote automated launching of IGLA type missiles to provide protection of surface ships with displacement of 200 tons and over against attacks of anti-ship missiles, aircraft and helicopters in close-in area.


2 x 14.5 mm KPV

Specifications KPVT 

Caliber…………………………………………………………….14.5 mm
Weight machine gun without………………………………..52.5 kg
Overall length ………………………………………………….2000 mm
Barrel length…………………………………………………….1350 mm
Bullet muzzle velocity………………………………..990-1000 m/sec
Effective rate of fire……………………………………..70-90 rds/min
Rate of fire………………………………………………600-650 rds/min
Sighting range……………………………………………………2000 m
Ammunition belt capacity……………………………………….50 rds


TheMakhachkala” (015)

Buyan Class Versions

An important feature of the ships “Tornado” type that they can equally well operate in shallow waters (their maximum draft is less than two meters) – on navigable rivers, in their mouths, in archipelagic and other “narrow” the waters and on the high seas . This is due to the fact that the IAC Project 21630 designed for operations in shallow Caspian Sea, known for its fierce storms.

The single platform ships such as “Tornado” has a total displacement of 560 tons, length – 61.45 m, width – 9.6 m diesel engines. MTU 16V4000M90, working on CODAD scheme allows to develop 26 knots full speed, and water jets provide high maneuverability and move in shallow waters, reducing noise and vibration of the chassis. The ships are widely used stealth-technology, giving it low visibility. Thus, the inclined flat surface superstructure and turret, bulwarks contribute to scattering of the reflected radar waves and reduces their intensity, ie secondary radar field of the ship. The layout of rooms and corridors contribute to the free movement of personnel on the ship without going to the upper deck. An alarm every officer and sailor can quickly take their place in combat schedule. Cruising range “Tornado” in the form of small artillery ship – 1500 miles, endurance – 10 days.

Image @blog.daum.netcombat information management system “Sigma-E”

Navigation system and means of hydrometeorological, combat information and control system “Sigma-E”, integrated bridge systems fully meet current standards and allow to solve assigned combat missions in full, as well as to safe navigation. The main link in the ships electronic equipment is a combat information management system “Sigma-E”, which provides command and control vehicle by combining the electronic equipment in a single complex automation of the process and the decision-making on the use of the ship’s combat arms. With the possibility of forming information on the tactical situation for the ship and for tactical formation, any of the ships of the “Tornado” can act as a control ship. Due to the wide introduction of automation, the number of the crew depending on the modification of 29-36 people.

Rocket-artillery ship of the project 21632 “Tornado” (version 1)

Rocket ship “Tornado” RCC “Uran-E” (version 2)

Zvezda Kh-35 Uran (SS-N-25 Switchblade) Uran-E shipborne missile system equipped with KH-35E anti-ship missiles

The Uran missile systems comprise 16 Kh-35 missiles – 4×4 launchers with pressurised transport-launching containers. The Uran system now serves as armament of Project 1149.8 missile equipped gun boats and other vessels. A coastal defense variant and, more recently, an antiaircraft variant were later developed on the basis of this missile.The Kh-35 missile has a normal aerodynamic design and an aluminium-alloy airframe. 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 kilometres.

The Kh-35U anti-ship aircraft missile (Article 78U), propelled by a turbojet engine, flies toward its target at a speed of about the 300 m/s at an extremely low altitude. Owing to its high-precision radio-altimeter, the missile can skim the sea waves at an altitude of 3-5 metres 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.

The missile has a folding wing and a folding tail fin.For use by coastal or shipborne launchers the missile is equipped with a rocket starter-accelerator, a container-type launcher having room for four missiles.

4×4 launchers with pressurised transport-launching containers

Entered Service 1983
Total length 3.75 m
Diameter 0.42 m
Wingspan 0.93 m
Weight 480 kg [630 kg with booster]
Warhead Weight 145 kg
Maximum Speed 300 m/s
Maximum effective range 130 km
Guidance mode Active Radarhoming


Rocket ship “Tornado” RCC “Yakhont” (version 3)

Yakhont missiles 

3M55 Oniks/P-800 Yakhont/P-800 Bolid/SSN-X-26decd8691decf2cbc25001520981ce856

The supersonic P-800 Yakhont (Gem) is a ramjet version of P-80 Zubr [SS-N-7 Starbright]. The ship, submarine and coastal-launched Yakhont is launched from the unified ampoule-shaped transport-launching container (TLC). The container is 9 m long, is 0.71 m in diameter. The firing range reaches 300 km (162 nmi.) when flying along a combined trajectory and 120 kg (265 lb.) when following only a low-altitude trajectory. Flight speed varying over the range from M=2.0 to M=2.5 is provided by the kerosene-fueled multi-mode liquid-fuel ramjet. The P-800 Bolid is the encapsulated, submarine launched version of Yakhont. An air-launched version of the missile with the take-off weight of 2,500 kg (5,507 lb.) is also being developed. The closest American counterparts, the Tomahawk and Harpoon missiles, are subsonic; the best French antiship missile, the Exocet, has a range of only 45 miles.

Country of Origin Russia
Builder Beriev
Role Amphibious anti-submarine patrol aircraft
Range 300 km mixed trajectory
120 km low trajectory
Speed Mach 2 to 2.5
Flight altitude 5 to 15 meters, final phase
Weight of warhead 200 kg [about]
Guidance active-passive, radar seeker head
Minimum target detection range 50 km in active mode
Maximum seeker head search angle 45 degrees
  • solid propellant booster stage
  • liquid-propellant ramjet sustainre motor
Launcher type underwater, surface ship, land
Launch method from closed bottom launch-container
Launch angle range 15 to 90 degrees
Weight 3,000 kg launch
3,900 kg in launch-container
Launch-container dimensions 8.9 meters length
0.7 meters diameter



The corvette features better see-keeping capabilities for navigation in stormy conditions. Buyan Class corvettes operate at up to sea state six and can employ weapons at up to sea state four.

The “Astrakhan” (012)

Radars / countermeasures of Buyan Class ships

Buyan Class integrates Pozitiv-M air / surface search radar, MR-231 navigation radar and 5P-10 Laska shipborne radar gunfire control system.

The electronic warfare aboard the Buyan Class includes two PK-10 shipborne decoy launching systems mounted on either side of the stern behind the superstructure. The PK-10 is a close-range decoy dispensing system designed to enhance the self-defence capability of the vessels. The system can launch up to ten electronic and optronic decoys to deceive the incoming anti-ship missiles.

Radar: «MR-352 Pozitiv-M1.2» phased array radar system (Pozitiv-ME1.2 for export)

Navigational radar: «MR-231 Pal»

Artillery fire control system : «5P-10-03 Laska » (5P-10-03E for export)

Sonar: «Anapa-M» suite (Anapa-ME for export)

Other: 1 x electro-optical surveillance device


M R-352 Pozitiv-M1.2 air / surface search radar

Positiv-ME1 and Positiv-ME1.2 Active Radars are designed for plan scanning, detection and tracking of air and surface targets, output of target designation data to users. The radars perform the following tasks:

  • radar air and surface surveillance;
  • detection of air targets including small-sized, diving, and flying at extremely low altitude;
  • detection of surface targets under conditions of normal and increased radar detection range, as well as under best visibilty conditions;
  • positioning (azimuth, range and elevation angle) and moving parameter determination of tracked targets;
  • friend-or-fore and individual identification of tracked targets by means of IFF system with embedded antennas;
  • target classification according to the path characteristics;
  • tracked target threat assessment;
  • automated target assignment;
  • display of target assignment chart featuring its dynamic on-line correction;
  • output of surface and air target designation data to missile firing control systems, as well as to artillery and torpedo systems, and jamming systems;
  • automated control of operation modes depending on interference situation;
  • automated performance monitoring and fault detection;
  • recording and archiving of tracked target data, data on made decisions, and statuses of integrated systems;
  • crew training in simulated tactical situation.

Positiv-ME1 and Positiv-ME1.2 Active Radars can be used as:

  • target detection systems, detection module, radar module for CIWS or missile systems;
  • scanning radars for the ships of various classes, as well as for land mobile platforms, stationary facilities and transportable containers.

Main specifications

Positiv-ME1 Positiv-ME1.2
Target detection range up to 250 km up to 150 km
Fighter-class target detection range up to 110 km up to 50 km
Sector width by elevation up to 85 deg. up to 85 deg.

Special features

Output of surface and air target designation data to missile firing control systems, torpedo and artillery systems, as well as to jamming systems.

High rate of scanning.


MR-123 radar system (LASKA)



•Self-sustained acquisition and identification of radar-contrast targets in circular and sector scanning modes;
•Track-while-scan of up to four air/surface/coastal tar-gets in one-layer circular or sector survelliance mode;
•Fire control of one or two artillery gun mounts of various calibres against one aerial or two surface targets(among the tracked ones);
•Reception of designation data from ship’s surveillance radars and mono-pulse tracking of one target with firing data generation;
acquisition and lock on the attacking missile launched from the tracked target with solution of the engagement priority problem.


Laska fire control radar is designed to monitor surface/air situation and to control fire of 30mm-76mm close-range shipborne artillery systems against air/missile and small-size surface targets.
•surveillance and precision tracking radar 
•integrated laser/TV channels
•fire control system comprising display and control panel
•interfaces with artillery mounts and ship systems
Data @Rosoboronexport

5P-10-03E fire control system

5P-10-03E Radar Control System

5P-10-03E General-Purpose Small-Sized Radar Control System is designated for optimal fire control of 30-100-mm naval artillery gun and 120-300-mm MLRS within the surface ship’s area of operation to ensure air and missile defence mission execution, warfare against small enemy surface ships, coastal target engagement, surface and air surveillance.

The system also performs the following tasks:

„delivery of data on current positions and required movement parameters of tracked targets to CICS in order to utilize other types of shipborne weapon;

autonomous detection of radar targets in 360° surveillance and sector scanning modes;

assessment of target threat level and fire control of one or two naval guns engaging one or two tracked targets; intercept of a missile taking off from the tracked target with shift of fire to the missile.

Main specifications

Operation range by distance (depending on the selected range scale) 14/21/30 km
Response time during operation according to target designation data:
in monopulse tracking mode not more than 3 sec
during autonomous detection and tracking:
in sector-scanning mode against one target not more than 6 s
in all-round surveillance mode against up to four targets from 10 to 45
during shift of fire to the next target not more than 3 sec
Power consumption from ship mains not more than 16 kW
Combat crew 1 person
without SPTA, mounting kit and supply units not more than 1500 kg
including antenna post not more than 700 kg

Special features

Automated simultaneous fire control of several naval artillery guns engaging one or two air, sea or coastal targets.

The system is installed on small and medium displacement surface ships (not more than 150 tons).

When engaging targets providing for 0,1 m² radar crosssection and 700 m/s speed in the autonomous mode, the balanced anti-aircraft warfare is provided by the effective engagement range of 30-100 mm antiaircraft naval artillery guns.


Two PK-10 shipborne decoy launching systems

The “Makhachkala” (162) Image

Propulsion of the Russian Navy’s Buyan Class

Buyan Class is powered by a twin screw combined diesel and diesel (CODAD) propulsion system. The propulsion system consists of two Zvezda M520 radial 56-cylinder diesel engines driving two pump-jet propulsors.

Zvezda M520 radial 56-cylinder diesel engines


The propulsors, with reduced noise and running vibration, provide high manoeuvrability. Each engine delivers a maximum power output of 3,970kW at 2,000rpm.


The engine is comprised of seven banks of eight cylinders. The usage of aluminium castings reduces the weight of the engine. A crankshaft driven supercharger provides boost pressure to the engine. The supercharger is equipped with water chilled inter-cooler.

The propulsion system provides a maximum speed of 28kt and range of 1,500nmi. The Buyan Class corvettes have a mission endurance of ten days.

Main material source

General characteristics – Project 21630

Displacement (tons):
Full load: 520
Dimensions (m):
Length: 61,8
Beam: 10,3
Draft: 3
Speed (knots): 26
Range: 1500 nm
Autonomy (days): 10
Propulsion: 2 x 8000 hp M507D diesels, 2 pump-jet
Armament: 1×6 3M-47 “Gibka” “Igla-1M” SAM system launcher
1×40 122 mm MS-73M “Grad-M” launcher
1×1 100 mm A-190-01 – 5P-10-03 “Laska” fire control system
2×6 30 mm AK-306
2×1 14,5 mm KPV
Electronics: 5P-26M «Pozitiv-M» air/surface search radar, MR-231 navigation radar
PK-10 “Smely” decoy RL (4 KL-121 launchers)
Complement: 48 (6 officers)


General characteristics – Project 21630/21631

General characteristics
Type: Corvette
  • 500 tons standard (project 21630)
  • 949 tons full (project 21631)
  • 62 m (203 ft) (21630)
  • 75 m (246 ft) (21631)
  • 9.6 m (31 ft) (21630)
  • 11 m (36 ft) (21631)
Height: 6.57 m (22 ft)
  • 2 m (7 ft) (21630)
  • 2.5 m (8 ft) (21631)
Propulsion: 2 shaft CODAD, 4 x Zvezda M520, 14,584 shp (10,880 kW), Pumpjet.
  • 28 knots (52 km/h; 32 mph) (21630)
  • 26 knots (48 km/h; 30 mph) (21631)
  • 1,500 nmi (2,800 km; 1,700 mi) (21630)
  • 2,300 nmi (4,300 km; 2,600 mi) at 12 knots (21631)
Endurance: 10 days
  • 29-36 (21630)
  • 52 (21631)
Sensors and
processing systems:
  • Radar: MR-352 Pozitiv-M1.2 phased array radar system (Pozitiv-ME1.2 for export)
  • Fire Control: 5P-10-03 Laska (5P-10-03E for export)
  • Sonar: Anapa-M suite (Anapa-ME for export)
  • Navigational Radar: MR-231 Pal
  • Other: 1 x electro-optical surveillance device
Electronic warfare
& decoys:
2 × PK-10 decoy


Note: This post is in regards to project (21630)

Updated Oct 18, 2016


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