Kolkata-class destroyer

	INS Kolkata at exercise Malabar, 2020.
Class overview
Name	Kolkata class
Builders	Mazagon Dock Limited
Operators	Indian Navy
Preceded by	Delhi class
Succeeded by	Visakhapatnam class
Cost	₹11,662 crore (equivalent to ₹190 billion or US$2.2 billion in 2023) for three ships (FY 2014); ₹3,887 crore (equivalent to ₹62 billion or US$740 million in 2023) per ship (FY 2014);
Built	2003–2015
In commission	2014–present
Planned	3
Completed	3
Active	3
General characteristics
Type	Guided-missile destroyer
Displacement	7,400 t (7,300 long tons; 8,200 short tons) full load
Length	163 m (534 ft 9 in)
Beam	17.4 m (57 ft 1 in)
Draught	6.5 m (21 ft 4 in)
Propulsion	Combined gas and gas system: 4 × Zorya-Mashproekt DT-59 reversible gas turbines producing 16.55MW each
Speed	30 knots (56 km/h)
Range	6,000 nmi (11,000 km) at 18 kn (33 km/h)
Complement	50 officers and 250 ratings
Sensors and ; processing systems	Radar :-; IAI EL/M-2248 MF-STAR S-band AESA multi-function radar; Thales LW-08 D-band air search radar; Garpun Bal (3TS-25E) radar ; Sonar :-; BEL HUMSA-NG bow sonar; BEL Nagin active towed array sonar; Combat Suite :-; BEL EMCCA Mk4 combat management system;
Electronic warfare ; & decoys	BEL Ellora electronic support measures; Decoys :-; 4 × Kavach decoy launchers; 2 × Maareech torpedo-countermeasure systems;
Armament	Anti-air warfare :-; 4 × 8-cell VLS, for a total of 32 Barak 8 surface-to-air missiles; Anti-surface warfare :-; 2 × 8-cell VLS, for 16 BrahMos anti-ship missiles ; Anti-submarine warfare :-; 4 × 533 mm (21 in) torpedo tubes ; 2 × RBU-6000 anti-submarine rocket launchers; Guns :-; 1 × OTO Melara 76 mm naval gun; 4 x AK-630 CIWS;
Aircraft carried	2 × Sea King or HAL Dhruv helicopters
Aviation facilities	Dual Enclosed hangar

The "Kolkata class" (Project 15A) are a class of stealth guided-missile destroyers constructed for the Indian Navy. The class comprises three ships – Kolkata, Kochi and Chennai, all of which were built by Mazagon Dock Limited (MDL) in India, and are the largest destroyers to be operated by the Indian Navy. Due to delays in construction and sea trials, the initial commissioning date of the first ship of the class was pushed back from 2010 to 2014.^[13]^[14]

The destroyers are a follow-on of the Project 15 Delhi-class destroyers, but are considerably more capable due to major improvements in the design, the addition of substantial land-attack capabilities, the fitting-out of modern sensors and weapons systems, and the expanded use of net-centric capability such as Cooperative Engagement Capability.^[15]^[16]^[17]^[18]^[19]

^ "Navy gets its largest destroyer". The Hindu. 13 July 2014. Archived from the original on 3 March 2018. Retrieved 15 July 2014.
^ "INS Kolkata". indiannavy.nic.in. Indian Navy. Archived from the original on 16 June 2015. Retrieved 28 April 2015.
^ INS Kolkata: embarquement immédiat. l'express. Archived from the original on 12 December 2021. Retrieved 2 September 2016.
^ Siddiqui, Huma (5 October 2015). "INS Kochi turbocharged". The Financial Express. Archived from the original on 4 February 2018.
^ Bedi, Rahul (18 August 2014). "India commissions first-of-class destroyer Kolkata". IHS Jane's Navy International. Archived from the original on 21 August 2014.
^ "INS Kochi commissioned at Mumbai | Indian Navy". Archived from the original on 3 June 2016. Retrieved 5 May 2016.
^ "INS Kochi commissioned at Mumbai | Indian Navy". indiannavy.nic.in. Archived from the original on 3 August 2016. Retrieved 21 November 2016.
^ ^a ^b "Country's most potent indigenous warship joins service this month". SP's Naval Forces. 8 June 2014. Archived from the original on 21 August 2016. Retrieved 8 June 2014.
^ "Bharat Electronics Ltd. awards LW08 contract to Thales". Thalesgroup.com. 2 July 2008. Archived from the original on 27 July 2011. Retrieved 2 April 2010.
^ "Virtual tour of INS Kolkata (Hindi)". YouTube.
^ "Kolkata Class Destroyer INS Chennai will be commissioned on Monday". India Today. Retrieved 24 September 2022.
^ ^a ^b Som, Vishnu (29 September 2015). "Inside India's New and Deadliest Warship". NDTV. Archived from the original on 18 July 2017. Retrieved 23 November 2017.
^ "Navy's ongoing hunt for heavy torpedoes leads to delay in modernisation process". India Today. 10 June 2013. Archived from the original on 17 July 2013. Retrieved 20 July 2013.
^ "Guided Missile Destroyer INS Chennai Joins the Indian Navy" (Press release). Indian Navy. 21 November 2016. Archived from the original on 21 November 2016. Retrieved 21 November 2016.
^ Toshi Yoshihara; James Holmes (2012). James R. Holmes (ed.). Strategy in the second nuclear age : power, ambition, and the ultimate weapon. Washington, DC: Georgetown University Press. p. 143. ISBN 978-1589019287. Archived from the original on 3 March 2018.
^ "Press Information Bureau".
^ "Indian Navy Demonstrates 'MRSAM 'Cooperative Engagement' Capability". 17 May 2019. Archived from the original on 10 July 2019. Retrieved 18 September 2019.
^ "Indian Navy completes MRSAM first cooperative engagement firing test – Naval News". 20 May 2019. Archived from the original on 21 September 2019. Retrieved 18 September 2019.
^ "Janes | Latest defence and security news". Archived from the original on 21 September 2019. Retrieved 18 September 2019.

[hindujul14-1] "Navy gets its largest destroyer". The Hindu. 13 July 2014. Archived from the original on 3 March 2018. Retrieved 15 July 2014.

[INS_Kolkata_class-2] "INS Kolkata". indiannavy.nic.in. Indian Navy. Archived from the original on 16 June 2015. Retrieved 28 April 2015.

[3] INS Kolkata: embarquement immédiat. l'express. Archived from the original on 12 December 2021. Retrieved 2 September 2016.

[4] Siddiqui, Huma (5 October 2015). "INS Kochi turbocharged". The Financial Express. Archived from the original on 4 February 2018.

[jni-18aug14-5] Bedi, Rahul (18 August 2014). "India commissions first-of-class destroyer Kolkata". IHS Jane's Navy International. Archived from the original on 21 August 2014.

[6] "INS Kochi commissioned at Mumbai | Indian Navy". Archived from the original on 3 June 2016. Retrieved 5 May 2016.

[7] "INS Kochi commissioned at Mumbai | Indian Navy". indiannavy.nic.in. Archived from the original on 3 August 2016. Retrieved 21 November 2016.

[sp8j14-8] "Country's most potent indigenous warship joins service this month". SP's Naval Forces. 8 June 2014. Archived from the original on 21 August 2016. Retrieved 8 June 2014.

[9] "Bharat Electronics Ltd. awards LW08 contract to Thales". Thalesgroup.com. 2 July 2008. Archived from the original on 27 July 2011. Retrieved 2 April 2010.

[10] "Virtual tour of INS Kolkata (Hindi)". YouTube.

[11] "Kolkata Class Destroyer INS Chennai will be commissioned on Monday". India Today. Retrieved 24 September 2022.

[ndtv-29sep15-12] Som, Vishnu (29 September 2015). "Inside India's New and Deadliest Warship". NDTV. Archived from the original on 18 July 2017. Retrieved 23 November 2017.

[it10j13-13] "Navy's ongoing hunt for heavy torpedoes leads to delay in modernisation process". India Today. 10 June 2013. Archived from the original on 17 July 2013. Retrieved 20 July 2013.

[FinalCommish-14] "Guided Missile Destroyer INS Chennai Joins the Indian Navy" (Press release). Indian Navy. 21 November 2016. Archived from the original on 21 November 2016. Retrieved 21 November 2016.

[15] Toshi Yoshihara; James Holmes (2012). James R. Holmes (ed.). Strategy in the second nuclear age : power, ambition, and the ultimate weapon. Washington, DC: Georgetown University Press. p. 143. ISBN 978-1589019287. Archived from the original on 3 March 2018.

[pib.nic.in-16] "Press Information Bureau".

[17] "Indian Navy Demonstrates 'MRSAM 'Cooperative Engagement' Capability". 17 May 2019. Archived from the original on 10 July 2019. Retrieved 18 September 2019.

[18] "Indian Navy completes MRSAM first cooperative engagement firing test – Naval News". 20 May 2019. Archived from the original on 21 September 2019. Retrieved 18 September 2019.

[19] "Janes | Latest defence and security news". Archived from the original on 21 September 2019. Retrieved 18 September 2019.

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Class overview
INS Kolkata at exercise Malabar, 2020.
Name	Kolkata class
Builders	Mazagon Dock Limited
Operators	Indian Navy
Preceded by	Delhi class
Succeeded by	Visakhapatnam class
Cost	₹11,662 crore (equivalent to ₹190 billion or US$2.2 billion in 2023) for three ships (FY 2014) ₹3,887 crore (equivalent to ₹62 billion or US$740 million in 2023) per ship (FY 2014)
Built	2003–2015
In commission	2014–present
Planned	3
Completed	3
Active	3
General characteristics
Type	Guided-missile destroyer
Displacement	7,400 t (7,300 long tons; 8,200 short tons) full load^[1]^[2]^[3]
Length	163 m (534 ft 9 in)
Beam	17.4 m (57 ft 1 in)
Draught	6.5 m (21 ft 4 in)
Propulsion	Combined gas and gas system: 4 × Zorya-Mashproekt DT-59 reversible gas turbines producing 16.55MW each^[4]^[5]
Speed	30 knots (56 km/h)
Range	6,000 nmi (11,000 km) at 18 kn (33 km/h)
Complement	50 officers and 250 ratings^[6]^[7]
Sensors and processing systems	Radar :- IAI EL/M-2248 MF-STAR S-band AESA multi-function radar^[8] Thales LW-08 D-band air search radar^[9] Garpun Bal (3TS-25E) radar ^[10] Sonar :- BEL HUMSA-NG bow sonar BEL Nagin active towed array sonar^[11] Combat Suite :- BEL EMCCA Mk4 combat management system^[8]
Electronic warfare & decoys	BEL Ellora electronic support measures^[12] Decoys :- 4 × Kavach decoy launchers 2 × Maareech torpedo-countermeasure systems^[12]
Armament	Anti-air warfare :- 4 × 8-cell VLS, for a total of 32 Barak 8 surface-to-air missiles Anti-surface warfare :- 2 × 8-cell VLS, for 16 BrahMos anti-ship missiles Anti-submarine warfare :- 4 × 533 mm (21 in) torpedo tubes 2 × RBU-6000 anti-submarine rocket launchers Guns :- 1 × OTO Melara 76 mm naval gun 4 x AK-630 CIWS
Aircraft carried	2 × Sea King or HAL Dhruv helicopters
Aviation facilities	Dual Enclosed hangar