Platform profile · India · Guided-missile destroyer · Indian Navy
Kolkata-class
StableAll three Project 15A destroyers remain active, with new generator equipment contracted in June 2026 to support future refits.
On 19 June 2026, the Ministry of Defence signed an approximately ₹425 crore contract for 12 indigenous 1.25 MW gas-turbine generator sets intended for Kolkata-class and other frontline destroyers, establishing a new equipment-upgrade pathway. Weeks earlier, INS Kolkata intervened in the Indian Ocean on 27 May 2026 after an attempted piracy attack against the merchant vessel Mashallah 1. The three Project 15A destroyers carry BrahMos and Barak-8 missiles and remain central to Indian carrier groups and long-range deployments. Their sustained use matters for maintaining fleet air defence and anti-surface reach while the newer Project 15B ships expand India's destroyer force.
Updated 19 Jun 2026
Verified figures
Specifications
| Specification | Value |
|---|---|
| Dimensions | 164 m length × approximately 18 m beam ↗ |
| Displacement | Approximately 7,400 t ↗ |
| Powerplant | Combined gas-and-gas arrangement with 4 gas turbines ↗ |
| Maximum speed | More than 30 kn ↗ |
| Electrical generation | 4 gas-turbine generator sets and 1 diesel alternator producing 4.5 MW ↗ |
| Complement | 30 officers and 300 sailors ↗ |
| Aviation facilities | Facilities for 2 Sea King or Chetak helicopters ↗ |
| Missile armament | 16 BrahMos strike missiles and 32 Barak-8 area-air-defence missiles ↗ |
| Gun armament | 1 × 76 mm gun and 4 × AK-630 close-in weapon systems ↗ |
| Sensors and ASW systems | MF-STAR radar, HUMSA-NG sonar, torpedo launchers and anti-submarine rocket launchers ↗ |
Spec sources: pib.gov.in ↗ · usni.org ↗
Changelog
Program timeline
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The Ministry of Defence signed an approximately ₹425 crore contract with Bharat Forge for 12 indigenous 1.25 MW gas-turbine generator sets, with deliveries planned over 5 years.
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INS Kolkata responded to an attempted piracy incident involving the merchant vessel Mashallah 1 in the Indian Ocean and deployed its helicopter and boarding team.
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INS Chennai participated in International Fleet Review 2026 off Visakhapatnam.
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INS Kolkata completed multilateral anti-submarine, anti-surface and air-defence training with British, Japanese and Norwegian forces in the Indian Ocean.
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INS Kochi arrived at Malé for a scheduled port call and professional activities with the Maldives National Defence Force.
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INS Kolkata forced 35 pirates aboard MV Ruen to surrender and rescued all 17 crew members after a 40-hour operation in the Arabian Sea.
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INS Chennai responded to the hijacking of MV Lila Norfolk in the Arabian Sea, after which all 21 crew members were reported safe.
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INS Chennai was commissioned at Mumbai, completing the 3-ship Project 15A class.
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INS Kolkata was commissioned at Mumbai as the first Project 15A destroyer.
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