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| Khukri-class corvette | |
|---|---|
| Name | Khukri-class corvette |
| Builders | Garden Reach Shipbuilders & Engineers |
| Built | 1980s |
| In service | 1989–2012 |
| Displacement | 1,350 tonnes (full load) |
| Length | 91 m |
| Beam | 10.5 m |
| Draught | 3.8 m |
| Propulsion | Combined diesel and diesel (Cummins/MAN/MTU) |
| Speed | 25 kn |
| Range | 3,000 nmi at 16 kn |
| Complement | 102 |
| Sensors | * BEL radar suites * sonar |
Khukri-class corvette The Khukri-class corvette is an Indian-built class of anti-submarine warfare corvettes constructed by Garden Reach Shipbuilders & Engineers for the Indian Navy. Intended to replace older Petya-class frigate-era hulls, the class combined sensors and weapons to address Cold War-era submarine threats in the Indian Ocean and Arabian Sea during the late Cold War and post-Cold War period. Two ships served as coastward ASW platforms before being phased out in the 21st century after careers that involved multinational exercises, fleet deployments, and domestic shipbuilding milestones.
Designed in the late 1970s by Indian Navy planners in collaboration with Soviet Union-era advisors and domestic shipyards, the Khukri-class reflected lessons from the Indo-Pakistani War of 1971 and the submarine activity around Bay of Bengal and Arabian Sea. The project involved Garden Reach Shipbuilders & Engineers, Mazagon Dock Limited, and technical inputs from Soviet Naval Design Bureau-influenced engineers and executives linked to Ministry of Defence (India). Naval architects adapted hull forms influenced by contemporary Soviet Navy corvettes, integrating anti-submarine warfare suites compatible with equipment from Thales Group-era suppliers and Hindustan Aeronautics Limited-procurement channels. The design emphasized seakeeping for the Indian Ocean region, reduced acoustic signature to counter Soviet submarine detections, and modular spaces to accept future upgrades from Bharat Electronics Limited and international partners such as ThyssenKrupp Marine Systems.
Armament centered on ASW capabilities, including rocket launchers and torpedo tubes compatible with Shyena-type lightweight torpedoes and export-patterned designs influenced by Type 53 torpedo. The main gun mount derived from systems interoperable with Bofors designs and NATO-standard ammunition used in joint logistics with navies such as the Royal Navy and United States Navy. Sensor fit featured hull-mounted sonar suites derived from collaborations with Naval Physical and Oceanographic Laboratory and procurement of electronic suites from Bharat Electronics Limited and foreign vendors like Thales Group and Sperry Corporation-era navigation aids. Combat information systems followed doctrines aligned with the Indian Navy's evolving tactical data links used in exercises with Royal Australian Navy, Republic of Singapore Navy, and Royal Thai Navy.
Propulsion used high-speed diesel engines sourced through licensed manufacture with suppliers such as MAN SE, MTU Friedrichshafen, and indigenous fabrication at Kirloskar facilities under Ministry of Defence (India) approval. The combined diesel configuration enabled cruising economy and sprint capability for anti-submarine maneuvers practiced during drills with United States Pacific Fleet detachments and during bilateral exercises with Russian Navy units. Top speed reached approximately 25 knots with cruiser endurance of about 3,000 nautical miles at 16 knots, supporting patrols around Lakshadweep and Andaman and Nicobar Islands and escort missions related to Operation Pawan-era logistics.
Khukri-class ships entered service in the late 1980s and were active through the 1990s and 2000s, participating in fleet reviews alongside units from Royal Navy, French Navy, and United States Navy. Notable deployments included anti-piracy patrols in coordination with Indian Coast Guard assets and multinational exercises like Exercise Malabar and INDRA. Crews trained with submariners from the Soviet Navy and later the Russian Navy after the dissolution of the Soviet Union. The class saw peacetime tasks including maritime surveillance near Lakshadweep and search-and-rescue operations linked to incidents in the Bay of Bengal, working with agencies such as National Disaster Management Authority and Indian Coast Guard.
Two ships were completed at Garden Reach Shipbuilders & Engineers with names honoring historical figures and actions linked to Indian Navy heritage. Both vessels were commissioned in the late 1980s and served in various squadrons under commands that reported to Eastern Naval Command and Western Naval Command. Deployments involved port visits to Colombo, Male (Maldives), Muscat, and Singapore as part of naval diplomacy with governments including Sri Lanka, Maldives, Oman, and Singapore.
Throughout service life the class received mid-life upgrades from Bharat Electronics Limited and private-sector partners including Tata Group-affiliated marine divisions, integrating modern combat management components and improved sonar processors influenced by models used by Royal Navy and Royal Canadian Navy. Discussions about re-engining and sensor replacements involved manufacturers such as Rolls-Royce and General Electric's marine branches, with proposals evaluated by research establishments including Defence Research and Development Organisation and Naval Materials Research Laboratory. Retrofitting focused on electronic warfare suites, navigation radars, and interoperability with the Information Warfare Directorate of the Indian Navy.
Decommissioning began in the early 2010s as newer classes like the Kamorta-class corvette and Visakhapatnam-class destroyer entered service. Disposal options explored by the Indian Navy and Ministry of Defence (India) included scrapping at yards such as Alang-area breakers, sinking as artificial reefs near coastal jurisdictions like Goa and Kochi under environmental clearances by the Ministry of Environment, Forest and Climate Change, or preservation as museum exhibits similar to conversions at Mumbai and Visakhapatnam. Some legacy equipment was salvaged for training at institutions including Indian Naval Academy and Naval Dockyard (Mumbai).
Category:Corvette classes Category:Ships of the Indian Navy