Kolkata Class Guided Missile Destroyer (Project 15A)

The Kolkata-class guided missile destroyers are the new stealth destroyers being built by Mazagon Dock Limited (MDL) for the Indian Navy, under Project 15A. The destroyers are preceded by Type 15 Delhi-class destroyers and succeeded by the Project 15B destroyers.

The Indian Government approved the construction of three Kolkata-class destroyers in May 2000. The first steel was cut for the lead ship in class, INS Kolkata, in March 2003. Her keel was laid in September 2003.

1526527_-_mainINS Kolkata (D63) – Image: indiatimes.com

The ship was launched in March 2006 at Mazagon Dock, Mumbai, and delivered to the Indian Navy in July 2014. The vessel was commissioned in August 2014. The Indian Navy successfully test-fired a BrahMos supersonic cruise missile from the INS Kolkata destroyer using the UVLM launcher in February 2015.

The keel of INS Kochi was laid in October 2005. It was launched in September 2009 and commissioned in September 2015.

rtx1sv0f_1443595483INS Kochi (D64) – Image: indiatimes.in

The last vessel in the class, INS Chennai, was laid in February 2006. It was launched in April 2010 and is due for commissioning in late-2016. The project has been delayed due to the complex warship building process.

INS Chennai commissioned: Indian Navy gets another indigenous Kolkata-class guided missile destroyer: Here

ins-chennaiINS Chennai (D65) – Image: financialexpress.com

In January 2011, the MDL was awarded a follow on order for the construction of four P-15B destroyers. The P-15B ship will retain the hull form of Kolkata-class and will feature a stealthier flush deck and advanced weapon systems.

Project 15B Visakhapatnam-class destroyer

project_15_b_destroyer_visakhapatnam_class_indian_navy_2Image: navyrecognition.com
Class overview
Name: Visakhapatnam class
Builders: Mazagon Dock Limited
Operators:  Indian Navy
Preceded by: Kolkata class
Cost: ₹29,340 crore (US$4 billion)
In commission: 2018
Building: 2
Planned: 4
General characteristics
Type: Stealth guided missile destroyer
Displacement: 7,400 t (7,300 long tons; 8,200 short tons)
Length: 163 m (535 ft)
Beam: 17.4 m (57 ft)
Draft: 6.5 m (21 ft)
  • Combined gas and gas system: Twin Zorya M36E gas turbine plants with 4 × DT-59 reversible gas turbines and 2 × RG-54 gearboxes
  • 2 × Bergen/GRSE KVM-diesel engines, 9,900 hp (7,400 kW) each
  • 4 × 1 MWe Wärtsilä WCM-1000 generator sets driving Cummins KTA50G3 engines and Kirloskar 1 MV AC generators
Speed: In excess of 30 knots (56 km/h)
Range: 4,000 nautical miles (7,400 km; 4,600 mi) at 14 knots (26 km/h; 16 mph)
Crew: 300 (50 officers and 250 sailors)
Sensors and
processing systems:
  • IAI EL/M-2248 MF-STAR S-band AESA multi-function radar
  • Thales LW-08 D-band air search radar
  • BEL HUMSA-NG bow sonar
  • BEL Nagin active towed array sonar
Electronic warfare
& decoys:
Elbit Systems Deseaver MK II counter-measures systems and defensive aids suite
  • Anti-air missiles:
  • 2 × 16-cell VLS, for a total of 32
  • Barak 8 missiles (Range: 0.5 km (0.31 mi) to 100 km (62 mi))
  • Anti-ship/Land-attack missiles:
  • 2 x 8-cells UVLM for 16 BrahMos anti-ship and land-attack cruise missiles
  • Guns:
  • 1 × 127 mm gun Oto Melara SRGM
  • 4 × AK-630 CIWS
  • Anti-submarine warfare:
  • 4 × 533 mm Torpedo tubes
  • 2 × RBU-6000 anti-submarine rocket launchers
Aircraft carried: 2 × Sea King or HAL Dhruv helicopters
Aviation facilities:
  • Flight deck
  • Dual Enclosed hangar for a combination of 2 Seaking, Chetak or HAL Dhruv helicopters

Technical data Project 15B wikiwand.com

Ships of the class

Initially in 2008, the total program cost with long-term spare parts was expected to cost ₹3,800 crore (US$560 million), but the construction costs escalated about 225%, and by 2011, cost of the program became ₹11,662 crore (US$1.7 billion), with each ship costing ₹3,900 crore (US$580 million). The Defense Minister A. K. Antony cited the causes being the delay in supply of warship-grade steel by Russia, increase in costs of Russian specialists due to inflation during the build period, wage revision due from October 2003 and delay in finalisation of cost of weapons and sensors.

Yard No.
Laid Down
Sea Trials
INS Kolkata
Mazagon Dock Limited
27 March 2003
30 March 2006
16 August 2014
INS Kochi
25 October 2005
18 September 2009
30 September 2015
INS Chennai
21 February 2006
1 April 2010
21 November 2016
Source wikiwand.com

Design and features of the Kolkata-class


Conceptualised by the Indian Navy, the detailed design phase for the class was completed by MDL. Kolkata-class is a follow-on model of the Delhi-class and is fitted with modern weapons and sensor systems. The propulsion system of the Delhi-class was also retained with minor upgrades. Most of the systems integrated in the ships are designed and built in India.

kochi2_zpsse8x1yceINS Kochig5INS Kochi – Image: ndtv.com

The destroyers are also equipped with an action information system and an atmospheric control system. The modern stealth destroyers demonstrate superior anti-surface warfare (ASuW) capabilities. The vessel has an overall length of 163m, a beam of 17.4m and a draft of 6.5m. The full load displacement of the ship is 6,800t.

1252606_wallpaper1INS Kolkata (D63)

Type 052D destroyer: Here

173 sea trialType 052D Class Guided Missile Destroyer Starts Its First Sea Trial export pakistan navy pla navy chinese missile antiship hq-10 hq-9 hq-16 sam aesa (3).jpg

*Note the Type 52D out guns the Kolkata Class Destroyer

Kolkata-class missile systems

xepugr8INS Kochi

The 16-cell universal vertical launcher module (UVLM) fitted on the ship can launch BrahMos missiles.

There are two vertical launching systems (VLS) for Barak SAM (surface-to-air missile).

16 x Universal vertical launcher module (UVLM)


BrahMos missile


The BrahMos PJ-10 is distinguished by its reported supersonic speed of between Mach 2.0-2.8, depending on the cruising altitude used. In addition to making it difficult to intercept, this speed also imparts a greater strike power. In addition, the BrahMos is equipped with stealth technology designed to make it less visible to radar and other detection methods. It has an inertial navigation system (INS) for use against ship targets, and an INS/Global Positioning System for use against land targets. Terminal guidance is achieved through an active/passive radar.


Originated From: Russia and India
Possessed By: Russia, India, Vietnam
Alternate Names: PJ-10
Class: Supersonic Cruise Missile
Length: 8.0-8.2 m
Diameter: 0.67 m
Launch Weight: 2,200-3,000 kg
Payload: 200-300 kg
Warhead: HE, submunitions
Propulsion: Liquid-fueled ramjet
Range: 300-500 km, 290 km export version
Basing: Ground-launched, Air-launched, Sub-launched, Ship-launched
Status: Operational

Source missilethreat.csis.org


2 x Vertical launching systems (VLS)

kolkata-10Image: iadnews.in

The ship’s main air-defence armament is composed of two 4×8-cell vertical launching systems (VLS) allowing for up to 32 Barak 8 (medium-long range) air-defence missiles.


Barak 8 is an Indian-Israeli surface-to-air missile (SAM), designed to defend against any type of airborne threat including aircraft, helicopters, anti-ship missiles, and UAVs as well as cruise missiles and combat jets at a range of 70-90 Kms. Barak 8 as “an advanced, long-range missile defense and air defense system” with its main features being:

  • Long Range
  • Two way data link
  • Active Radar Seeker Missile
  • 360 degree coverage
  • Vertical Launch
  • Multiple Simultaneous Engagements

Source iadnews.in

Barak SAM (LR-SAM)


Barak 8 (the Hebrew word for Lightning) also known as LR-SAM is an Indian-Israeli surface-to-air missile (SAM), designed to defend against any type of airborne threat including aircraft, helicopters, anti-ship missiles, and UAVs as well as cruise missiles and combat jets out to a maximum range of 70 km,  however, reports suggest the missile has been increased to a maximum range of 90 km following “range upgrade discussions” between India and Israel during November 2014. Some news agencies have referred to the missiles range at 100 km. Both maritime and land-based versions of the system exist.

Barak 8 was jointly developed by Israel Aerospace Industries (IAI), India’s Defence Research & Development Organisation (DRDO), Israel’s Administration for the Development of Weapons and Technological Infrastructure, Elta Systems, Rafael and other companies. Bharat Dynamics Limited (BDL) will produce the missiles. The Israeli Navy has commenced equipping its Sa’ar 5 corvettes with the system, the first re-fitted vessel being the INS Lahav. The Sa’ar 4.5 flotilla will be next for the upgrade. The first 32 missile array will be fitted on the Indian Navy stealth guided-missile destroyer INS Kolkata (D63).


Barak 8/ LR-SAM/ MR-SAM
Type Long-range surface-to-air missile
Place of origin IsraelIndia
Service history
In service Induction Phase
Used by Israeli NavyIndian NavyIndian Air Force
Production history
Designer Israel Aerospace Industries
Defence Research and Development Organisation
Manufacturer Rafael Advanced Defense Systems
Bharat Dynamics Limited
Weight 275 kg (606 lb)
Length 4.5 m (180 in)
 length 123 cm (48 in)
Diameter 0.225/0.54 m
Proximity (60 kg warhead)
Engine Two stage, smokeless pulsed rocket motor
Wingspan 0.94 m
0.5–90km some media reports indicate a capability of 100km
Flight ceiling 0–16 km
Speed Mach 2 (680 m/s)
  • Two way data link
  • Active RF/IIR seeker
8 cell VLS module

Source wikiwand.com


India Successfully Test Fires Surface-To-Air Missile Developed With Israel

Indian Navy had also successfully test launched the long range surface to air missile (LR-SAM). The test was undertaken on the Western Seaboard by INS Kolkata on December 30, 2015. These missiles would be inducted in all the three services after trials were completed.

Many Indian industries like BEL, L&T, BDL, and TATA group of companies besides other private industries have contributed to the development of a number of subsystems which have been put into use in this flight test, the official said. Source ndtv.com

BrahMos is a supersonic cruise missile developed by BrahMos Aerospace, a joint venture between India-based Defence Research and Development Organisation (DRDO) and Russia-based NPO Mashinostroyenia (NPOM).

BrahMos missile has a top speed of Mach 2.5 to Mach 2.8 and a maximum range of 290km.


Naval gun systems onboard the Indian destroyers

The main gun fitted forward is a 130mm gun (error it is a 76mm gun). Four AK-630 close-in weapon systems (CIWS) are being provided for close-in air defence. The AK-630 CIWS can defend the ship from incoming anti-ship missiles and other guided weapons. It has a rate of fire of 5,000 rounds a minute.

1 × 76 mm gun Oto Melara SRGM


Technical data:

Caliber: 3 inches / 76,2 mm
Barrel lenght: 186 inches / 4,72 meters (= 62 caliber)
Weight: 7900kg, empty (Super Rapid)
Shell: 76 x 900 mm / 12,34 kilograms
Elevation: – 15° to + 85°
Traverse: 360°
Rate of fire: Compact: 85 rpm / Super Rapid: selectable from single shot up to 120 rpm
Muzzle Velocity: 925 m/s (1100 m/s – DART)
Magazine: Compact: 80 rounds / SR: 85 rounds
16 kilometers with standard ammunition
20 km with extended range ammunition
up to 40 km with VULCANO ammunition

HE (high explosive) – 6,296kg / Range 16km / effective range 8km (4km vs. air targets at elev. 85°)
MOM (multi-role OTO munition)
PFF (pre-formed fragmentation) – anti-missile ammunition
SAPOM (semi-armored piercing OTO munition) – 6,35kg / Range 16km
SAPOMER (semi-armored piercing OTO munition, extended range) – Range 20km
DART (driven ammunition reduced time of flight) – sub-calibre guided ammunition against multiple targets
(missiles and maneuvering targets at sea) 4,2kg in barrel / 3,5kg in flight / 660mm lenght / effective range >8km
VULCANO (76mm unguided and guided extended range ammunition) – under development

Source seaforces.org


4 × AK-630CIWS


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.

6 barrel Gatling gun AO-18


Date Of Design 1963
Date In Service AK-630:  1976
Gun Weight AO-18 (for AK-630):  under 452 lbs. (under 205 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


Type Fixed
Weight of Complete Round 1.834 – 1.839 lbs. (0.832 – 0.834 kg)
Projectile Types and Weights HE-FRAG (OF-84) – 0.86 lbs. (0.39 kg)
FRAG tracer (OP-84) – 0.86 lbs. (0.39 kg)
Bursting Charge HE-FRAG (OF-84) – 0.107 lbs. (0.0485 kg)
FRAG tracer (OP-84) – 0.026 lbs. (0.0117 kg)
Projectile Length up to 11.54 in (293 mm)
Propellant Charge N/A
Muzzle Velocity All:  2,953 fps (900 mps)
3M87:  2,822 fps (860 mps)
Palash:  3,609 fps (1,100 mps)
Working Pressure N/A
Approximate Barrel Life AK-630:  8,000 rounds (automation resource)
Ammunition stowage per gun AK-630:  2,000 rounds


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)

Data navweaps.com

screenshot-www.youtube.com-2018.03.23-15-55-16AK-630 on the INS Kolkata (D63)

Anti-submarine warfare

screenshot-www.youtube.com-2018.03.23-15-53-58Twin-tube torpedo launchers INS Kolkata (D63)

The anti-submarine warfare is provided by twin-tube torpedo launchers and RBU-6000 smerch-2 ASW rocket launchers. The rockets can be launched against submarines within a range of 6km.

2 x Twin-tube torpedo launchers for Mark 46 torpedo


Mark 46, Mod 5

  • Primary Function: Air and ship-launched lightweight torpedo
  • Contractor: Alliant Techsystems
  • Power Plant: Two-speed, reciprocating external combustion; Mono-propellant (Otto fuel II)
  • Length: 8 ft 6 in (2.59 m) tube launch configuration (from ship), 14 ft 9 in (4.5 m) with ASROC rocket booster
  • Weight: 508 lb (231 kg) (warshot configuration)
  • Diameter: 12.75 in (324 mm)
  • Range: 12,000 yd (11 km)
  • Depth: > 1,200 ft (365 m)
  • Speed: > 40 knots (46 mph, 74 km/h)
  • Guidance System: Homing mode: Active or passive/active acoustic homing
  • Launch/search mode: Snake or circle search
  • Warhead: 96.8 lb (44 kg) of PBXN-103 high explosive (bulk charge)
  • Date Deployed: 1967 (Mod 0); 1979 (Mod 5)

* according to wikiwand (may not be this model)*

Source wikiwand.com 

RBU-6000 smerch-2 ASW rocket launcher

ins_kochi_759Image: indianexpress.com6c2b91432c88d713d3438c06544c7670

Depth-Charge Rocket Launcher RBU-6000

  • It is possible to modernize the RBU Launcher using the electric servo drive with the up-to-date cell base.
  • It is an effective combat device for protection of Naval ships against submarines and attack torpedoes. It is possible to use new rockets 90R with underwater gravitation homing projectile.
rpk890R rocket – Image: warefare.be001.jpgfea40392-c39d-424c-882c-dd7e6be0b54fOriginal


Calibre, mm


Number of Barrels


Launcher Weight, kg


Weight of  Rocket RGB-60, kg


Range of Fire by Rocket RGB-60, m
– maximum
– minimum
Weight of  Rocket 90R, kg


Range of Fire by Rocket 90-R, m
– maximum
– minimum


Laying Speed, deg/s
– in elevation
– in training


Data zavod9.com

ins-chennai5Image: financialexpress.com

Sensors / radar systems on the Kolkata-class guided missile destroyers


Kolkata-class is equipped with Thales LW-08 long range volume search radar, EL/M-2248 MF-STAR multimission radar and EL/M-2238 L-band STAR surveillance radar from Israel Aerospace Industries.

Thales LW-08 long range volume search radar


Functional Aspects

The LW08 is an operationally proven radar system. LW radars have been installed on board ships in several configurations.

All systems are provided with solid-state components, a TWT transmitter, a video extractor for automatic target tracking and built-in test equipment. Optionally a back-up solid state transmitter can be offered for reduced TWT use and improved performance in littoral environment. They are simple to operate and easy to maintain. IFF can be integrated by mounting an IFF antenna with interrogation path side-lobe suppression (ISLS) capability and by adding synchronized IFF interrogators.

Performance Data

Detection range

  • Small missile : 100 km
  • Fighter aircraft : 230 km
  • Target speed : up to Mach 4
  • Surface targets : radar horizon
  • Minimum range : 2 km
  • Instrumented range : 135/270 km
  • Tracking capacity : 400

Technical Data

Antenna parameters

  • Type : horn-fed parabolic reflector
  • Beamwidth

– horizontal : 2.2º

– vertical : cosec2 up to 40º

  • Polarization : linear/circular
  • Rotation speeds : 7.5 and 15 rpm

Transmitter parameters

  • Type : TWT
  • Frequency : D-band
  • Frequency modes : fixed frequency and frequency agility
  • Transmission modes : full scan and sector transmission
  • Average power : 5.2 kW

Receiver parameters

  • Receiver channels

– air surveillance : MTI and LIN

– surface surveillance : LIN or LOG

  • Video processing : MTI: digital canceller and

video correlator

Digital ISU and LOG with


  • Compressed pulse length : 0.6 µs

Source thales7seas.com

Type: Radar Altitude Max: 30480 m
Range Max: 333.4 km Altitude Min: 0 m
Range Min: 5.4 km Generation: Early 1980s
Properties: Identification Friend or Foe (IFF) [Side Info], Moving Target Indicator (MTI), Pulse Doppler Radar (Full LDSD Capability)
Sensors / EW:
LW.08 – (RAWL-2, LAR-2, Type 1022, SPQ-502) Radar
Role: Radar, Air Search, 2D Long-Range
Max Range: 333.4 km

EL/M-2248 MF-STAR multimission radar

ins-kolkataINS Kolkata – Image: ibtimes.co.in


MF-STAR – Multi-function Surveillance, Track And Guidance Radar

The MF-STAR (ELM-2248) is a multi-function solid-state digital active phased array radar system for the new generation of naval platforms. The radar system delivers high quality situation picture and weapon support, under severe target/environmental conditions in the current and future naval arena. Incorporating advanced technology and robust system architecture, the MF-STAR employs multi-beam and pulse Doppler techniques as-well-as cutting edge ECCM techniques to extract low RCS targets from complex clutter and jamming environments. MF-STAR’s basic TR element digital output enables software only adaptive beam forming and mode variations to form a software defined radar. The MF-STAR antenna includes 4 active arrays in S-Band frequency. The hardware architecture and technology ensures high system availability, low maintenance and low life cycle cost. The MF-STAR incorporates a lightweight antenna that can be tailored to fit even relatively small ship sizes (corvettes and above).



  • Fast threat alert response time
  • Very high tracking update rate and accuracy for priority targets
  • Short search frame/TWS revisit time
  • Mid-course guidance of active/semi-active anti-air missiles
  • Illuminator enslavement for semi-active missiles
  • Automatic splash detection and measurement for gunnery support
  • Instantaneous multi-beam
  • Advanced beam forming techniques for ECCM
  • Lightweight antenna
  • Scalable, modular active solid-state phased array
  • High reliability and high availability


Source iai.co.il

EL/M-2238 L-band STAR surveillance radar

Elta EL-M 2238 3D StarImage: iai.co.il

The STAR is a fully coherent S-band pulse Doppler 3D multibeam and multimode search radar. The radar performs long range air surveillance combined with surface surveillance and, at the same time, provides fast detection and automatic threat alert of air targets with an extremely low false alarm rate.


Main Objectives

  • Long range detection
  • Missile detection and designation/indication
  • Automatic threat alert
  • Automatic track-while-scan (TWS)
  • Anti-air missile (AAM) weapon systems designation and support
  • Surface gunnery engagement support

Main advantages

  • Pulse Doppler coverage
  • Simultaneous air and surface channels
  • 3D multibeam elevation coverage
  • Very low false alarm rate
  • Integral IFF antenna
  • Cost effective solution for medium size ships and up


Source iai.co.il

Sonar systems include HUMSA-NG (hull mounted sonar array – new generation) and Nagin active towed array sonar.

HUMSA-NG (hull mounted sonar array – new generation)

Humsa_Sonar_1Image: iadnews.in

HUMSA-NG is the third generation indigenous, ship borne, hull mounted, Sonar system designed by Naval Physical & Oceanographic Laboratory, DRDO, Kochi and productionised by Bharat Electronics, Bangalore. HUMSA-NG is a state of the art Active cum Passive Integrated Ship Sonar system designed to be installed on a variety of naval surface platforms such as Frigates, Destroyers, ASW Corvettes and other classes of ships. Source drdo.gov.in

HUMSA-NG is an advanced Active cum Passive integrated sonar system proposed to be fitted on a wide variety of Indian Navy platforms such as the Project 17, Project 15A and Project 28 class ships. HUMSA-NG is an advanced version of the existing HUMSA sonar presently fitted on P16, P15, Ranjit and Talwar Class of ships.

The HUMSA (NG) is designed for enhancing the system performance, reliability and maintainability employing the following broad principles:

  • Sub systems / interfaces based on open standards architecture
  • Modular hardware / software blocks
  • Standard back planes for simple and reliable inter-connection
  • Efficient packaging of electronics.
  • Efficient chilled air-cooling arrangements for the cabinets
  • Extensive facilities for Fault Detection & Fault Localization/ maintenance support.

The Human Machine Interface (HMI) for the HUMSA (NG) is through dual console re-configurable user- friendly displays manned by two operators and requiring minimum operator intervention. In addition to the operating consoles HUMSA (NG] system a workstation to provide auxiliary functions like classificatioaid, simulator functions and recording facility, etc. The system also shares the common display console(s), ESI, and video recording facilities.

The sonar is capable of simultaneous operation in active and passive modes. It is capable of detecting, localizing, classifying and tracking sub-surface targets in both active and passive modes.

The system provides simultaneous long-range detection in active and passive modes. The sonar is capable of localization and automatic tracking of up to eight targets in both active and passive modes.

The sonar integrates the operation of the UWT and XBT systems. The UWT functions are controlled from the main sonar console. The data received from the XBT is processed and presented on the workstation and also displayed on the sonar console.

The sonar provides target classification facility with advanced classification features in passive mode of operation.

The system is integrated with FCS systems such as IAC MOD ‘C and CAIO for exchange of relevant information. The sonar provides interface to the torpedo defence system to provide raw data for TD processing. Interfaces are also provided to obtain other ship house holding data such as course, speed, roll, pitch and GPS data.


  • Hull / Bow mounted single array medium range, low frequency SONAR system
  • Cylindrical transducer array to permit panoramic search capability
  • Electronic Beam tilt and Beam Stabilization capability.
  • Dual frequency of operation
  • Simultaneous active/passive search and track capability
  • Automatic target tracking to a maximum of 8 targets in both end Passive modes with Map overlay.
  • Advanced detection and classification features.
  • In built simulator and health monitoring facility.
  • In built facility to record and replay the raw & video data.
  • Standardized direct digital output for external systems.
  • Non Real time OS (LINUX) with C++
  • VME based COTS hardware with a modular concept.
  • Bi-static/Multi-static modes of operation
  • Intercept Processing
  • Fault Tolerant System

Source bel-india.com

General data:
Type: Hull Sonar, Active/Passive Altitude Max: 0 m
Range Max: 29.6 km Altitude Min: 0 m
Range Min: 0 km Generation: Late 2000s
Sensors / EW:
HUS-003 – Hull Sonar, Active/Passive
Role: Hull Sonar, Active/Passive Search & Track
Max Range: 29.6 km

Nagin active towed array sonar

A Nagin active towed array sonar and a bow-mounted sonar HUMSA-NG (hull-mounted sonar array – new generation) are carried for sub-surface surveillance. To protect against anti-ship missiles coming from multiple directions, the ship carries the Elbit Systems Deseaver MK-II decoy control and launching system. Source nyanglish.com

300d27009d15de8dfa36a708ac2bc0c6b6899791-tc-img-originalImage: asianage.com

The Kolkata-class has a flight deck and enclosed hangar to embark up to two medium-lift helicopters such as HAL Dhruv advanced light helicopter (ALH) and AgustaWestland Sea King helicopter.

HAL Dhruv advanced light helicopter (ALH)


The HAL Dhruv (Advanced Light Helicopter) is a twin-engined fourteen-seat medium utility helicopter produced by the Indian manufacturer Hindustan Aeronautics Limited (HAL).

Crew 2
Passengers 12-14
Propulsion 2 Turboshaft Engines
Engine Model Turbomeca Ardiden 3G
Engine Power (each) 1032 kW 1384 shp
alternative Engine Variant
Engine Model Turbomeca / HAL TM 333 2B2
Engine Power (each) 825 kW 1106 shp
Speed 300 km/h 162 kts
186 mph
Service Ceiling 4.500 m 14.764 ft
Range 659 km 356 NM
410 mi.
Empty Weight 3.335 kg 7.352 lbs
max. Takeoff Weight 5.500 kg 12.125 lbs
Rotor Blades (main/tail) 4/4
Main Rotor Diameter 13,20 m 43 ft 4 in
Tail Rotor Diameter 2,55 m 8 ft 4 in
Rotor Disc Area 136,8 m² 1473 ft²
Length (Fuselage) 13,43 m 44 ft 1 in
Length 15,87 m 52 ft 1 in
Height 4,98 m 16 ft 4 in
First Flight 1992
Production Status in production
Data for (Version) HAL Dhruv

Source flugzeuginfo.net

The ship is equipped with Elbit Systems Deseaver MK II decoy control and launching system. Deseaver can launch decoys against anti-ship missiles coming from different directions.

‘Kavach’ chaff decoy system

ins-chennai2Image: financialexpress.com

INS Chennai comes equipped with ‘Kavach’ chaff decoy system. It is also fitted with ‘Mareech’ torpedo decoy system for defence against torpedoes. Both of these decoy systems have been developed indigenously. Source financialexpress.com


The KAVACH MOD-II system is designed to counter the threat of various anti-ship missiles by using chaff decoys. The system provides soft kill defense in a three-layered defense scheme.

kavach-1Image: bel-india.com


1. Multi barrel chaff rocket launcher of Long Range and Short Range .
2. Trainable limits – ± 180 degrees at the rate of 60 degrees per second (max).
3. Elevatable limits � 0 to 60 degrees at the rate of 60 degrees per second (max).
4. Configuration of launcher – 4 x 4 barrels.
5. Firing selection of rockets � Auto and Manual.
6. Modes of Operation � Confusion, Distraction and Seduction.
7. Compensation for Pitch, Roll and Yaw.
8. Accepting, analyzing and prioritizing up to 5 threats.
9. On-line capturing inputs from ship systems.
10. Suggests Course- to-Steer.


1. Overall weight 1680 kgs
2. Overall Height 2690 mm
3. Overall Width 1300mm(dia)
4. Overall Length 1300mm(dia)
5. Mode of operation Power and Manual
6. Bore of barrel 105.6 + 0.4 mm


1. Overall weight 1350 Kgs
2. Overall Height 2460 mm
3. Overall Width 1300 mm (diameter)
4. Overall Length 1300mm (diameter)
5. Mode of operation Power and Manual
6. Bore of barrel 98.0 + 0.4 mm

Source ofbindia.gov.in

Kolkata-class propulsion, power and speed

The combined gas and gas (COGAG) propulsion system integrates twin Zorya M36E gas turbine plant. Four DT-59 reversible gas turbines drive the two propellers via two RG-54 gearboxes.

Ukrainian Zorya Production Association M36E gas turbine systems, producing more than 64,000 HP. The M36 gas turbine system compromises four DT-59 reversible gas turbine grouped in two pairs, driving two propellers through two RG-54 gearboxes. There will be 4 separate Russia-made gas turbine electrical generators, two in each engine room. Fresh air for the turbine will be drawn through two large stacks, one after the bridge superstructure and one aft. Source network54.com

DT-59 reversible gas turbine



UGT1 6 000R

  D T5 9
application   M *
GTE Power, kW   1 655 0
GTE efficiency,%   3 0 0
The specific fuel consumption of gas (Hu = 8555 kcal / Nm 3 ), Nm 3 / (kWh)  
Specific consumption of fuel oil (Hu = 10 200 kcal / kg), kg / (kW h)   0.2 81
The total pressure ratio compressors   1 3 , 5
The gas flow rate at the outlet of GTD, kg / s   10 0.0
The gas temperature at the outlet of the gas turbine engine, a C   38 0
power turbine speed, rev / min   36 00

Technical data zmturbines.com


The two KVM diesel motors are provided by Bergen and Garden Reach. Four Wartsila WCM-1000 generators and Kirloskar AC generators supply onboard electricity. The propulsion system provides a maximum speed of 30kt.

Name: INS Kolkata
Namesake: Kolkata
Operator: Indian Navy
Builder: Mazagon Dock Limited
Yard number: 701
Way number: D63
Laid down: September 2003
Launched: 30 March 2006
Acquired: 10 July 2014
Commissioned: 16 August 2014
Homeport: Mumbai
Identification: Pennant number: D63
Motto: “Yudhay Sarvasannadh”(Sanskrit)”Always Prepared for Battle”
Status: in active service
General characteristics
Class and type: Kolkata-class destroyer
Displacement: 7,500 tons
Length: 163 m (535 ft)
Beam: 17.4 m (57 ft)
Speed: In excess of 30 kn (56 km/h; 35 mph)
Range: 8,000 nmi (15,000 km; 9,200 mi)+
Crew: 250 (estd)
Sensors and
processing systems:
·IAI EL/M-2248 MF-STARAESA multi-function radar

·Thales LW-08 D-band air search radar

·IAI EL/M-2238 L-band STAR surveillance radar

·BEL HUMSA-NG bow sonar

·BEL Nagin active towed array sonar

·BEL Electronic Modular Command & Control Applications (EMCCA Mk4) combat management system

Electronic warfare
& decoys:
Elbit Systems Deseaver MK II counter-measures systems and defensive aids suite
Armament: ·Anti-air missiles:

·4 × 8-cell VLS, for a total of 32

·Barak 8 missiles (Range: 0.5 km (0.31 mi) to 90 km (56 mi))

·Anti-ship/Land-attack missiles:

·2 × 8-cell UVLM for 16 BrahMos anti-ship and land-attack missiles


·1 × 76 mm gun Oto Melara SRGM

·4 × AK-630 CIWS

·Anti-submarine warfare:

·4 × Mark 46 torpedo Torpedo tubes

·2 × RBU-6000 anti-submarine rockets

Aviation facilities: ·Flight deck

·Enclosed hangar

Technical data wikiwand.com

Main material source naval-technology.com

Updated Feb 08, 2018


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