The Kamorta-class corvette is India's four-ship Project 28 anti-submarine warfare stealth corvette class, designed by the Indian Navy's Directorate of Naval Design and built by Garden Reach Shipbuilders and Engineers Ltd in Kolkata. Official sources describe the class as a diesel-powered Eastern Fleet ASW platform with indigenous combat systems, rocket and torpedo armament, helicopter facilities, low-signature hull and exhaust features, and carbon-composite superstructures on INS Kiltan and INS Kavaratti.
Official releases emphasize domestic design and low-signature construction more than combat employment. INS Kamorta material describes an X-form hull, inclined sides, infrared-signature suppression for engine and generator exhausts, raft-mounted diesel machinery, and low underwater radiated noise. GRSE and PIB identify carbon-fiber composite superstructures on the later Kiltan and Kavaratti hulls, with DMR 249A steel used in Project 28 construction.
The class members are individual Project 28 corvettes rather than weapon variants; they are listed here to keep ship identities and commissioning dates visible without creating separate unsourced weapon pages.
| Variant | Configuration | Designation notes |
|---|---|---|
| INS Kamorta (P28) | Lead Project 28 ASW stealth corvette | Commissioned on 23 August 2014 as the first of four Project 28 ASW stealth corvettes. Sources: PIB Kamorta commissioning |
| INS Kadmatt (P29) | Second Project 28 ASW corvette | Commissioned on 7 January 2016; PIB described the ship as the second Project 28 ASW corvette designed by DND and built by GRSE. Sources: PIB Kadmatt commissioning |
| INS Kiltan (P30) | Third Project 28 ASW stealth corvette | Commissioned on 16 October 2017; PIB described the ship as the third of four Kamorta-class Project 28 ASW stealth corvettes. Sources: PIB Kiltan commissioning |
| INS Kavaratti (P31) | Fourth and final Project 28 ASW stealth corvette | Commissioned on 22 October 2020 as the last of four Project 28 Kamorta-class corvettes. Sources: PIB Kavaratti commissioning, GRSE Kavaratti commissioning |
Published sources identify the class with a layered ASW and self-defense fit; links are limited to existing catalog records with directly supported relationships.
| Carried item | Item type | Carriage evidence |
|---|---|---|
 | 76 mm naval gun mount | Naval News identifies the Kamorta-class armament fit with a 76 mm main gun, while Bharat-Rakshak describes the Project 28 gun as a license-built Oto Melara 76 mm Super Rapid mount. Sources: Naval News final Kamorta-class corvette, Bharat-Rakshak Project 28 class |
 | Anti-submarine rocket launcher | Naval News lists two RBU-6000 anti-submarine rocket launchers on the Kamorta class, and Bharat-Rakshak describes the Project 28 rocket launchers as L&T-built RBU-6000 derivatives. Sources: Naval News final Kamorta-class corvette, Bharat-Rakshak Project 28 class |
 | Shipborne ASW helicopter family | PIB documents the class's integral ASW-helicopter capacity, and GlobalSecurity describes the Project 28 helicopter space as suitable for Ka-28PL or Naval HAL Dhruv; the linked Ka-27 record covers Ka-28 by alias. Sources: PIB Kamorta commissioning, GlobalSecurity Project 28 design |
The Project 28 fit combines shipboard weapons, ASW sensors, and aviation facilities rather than a single offensive system. Official releases name anti-submarine rockets and torpedoes, close-in and medium gun systems, Revathi surveillance radar, indigenous combat-management and torpedo-tube launcher elements, and helicopter facilities.
Naval News reports two AK-630M 30 mm close-in weapon systems in the Kamorta-class fit.
No separate public AK-630 catalog record was found during this pass.
Naval News lists four 533 mm torpedo launchers, while PIB describes indigenous torpedo tube launchers in INS Kavaratti's system fit.
Varunastra was not linked because no existing public catalog record matched it.
PIB names Revathi surveillance radar on INS Kamorta, and BEL describes HUMSA-NG Mk 2 as a fourth-generation hull-mounted active/passive sonar for Indian naval ships.
Sensor details are retained here instead of creating thin component pages.
PIB documents integral ASW-helicopter capability and highlights a foldable hangar door plus rail-less helicopter traversing system on INS Kamorta.
GlobalSecurity identifies Ka-28PL and Naval HAL Dhruv as referenced helicopter options for the design.
PIB reported INS Kamorta entering service as the first Project 28 ASW stealth corvette, designed by the Directorate of Naval Design and built by GRSE.
Sources: PIB Kamorta commissioning
PIB reported INS Kadmatt entering service as the second Project 28 ASW corvette, with DND design, GRSE construction, four diesel engines, and more than 25-knot speed.
Sources: PIB Kadmatt commissioning
PIB reported INS Kiltan entering Indian Navy service as the third Kamorta-class Project 28 ASW stealth corvette.
Sources: PIB Kiltan commissioning
PIB and GRSE reported that INS Kavaratti, the last of four Project 28 Kamorta-class ASW stealth corvettes, was commissioned into the Indian Navy at Visakhapatnam.
Sources: PIB Kavaratti commissioning, GRSE Kavaratti commissioning
