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INS Udaygiri was commissioned along with INS Himgiri on 26 August 2025 at Naval Dockyard, Visakhapatnam.
 
About
INS Udaygiri and INS Himgiri are advanced stealth guided-missile frigates of the Indian Navy, built under Project 17A (Nilgiri-class), representing a significant leap in indigenous warship design with around 75% local content. They are multi-mission platforms capable of anti-air, anti-surface, anti-submarine warfare, and land-attack roles, boosting India’s maritime strike and defense capabilities.
 
INS Udaygiri Key Highlights

• Built by Mazagon Dock Shipbuilders Limited (MDL), Mumbai; second ship of Project 17A.
• Displacement: About 6,700 tonnes.
• Advanced stealth design minimizing radar, infrared, and acoustic signatures.
• Propulsion: Combined Diesel or Gas (CODOG) system.
• Armament includes BrahMos supersonic anti-ship missiles, Barak 8 surface-to-air missiles, a 76 mm main gun, Close-In Weapon Systems, and advanced anti-submarine warfare weapons.
• Indigenous content around 75%, with over 200 MSMEs involved and nearly 4,000 direct jobs created.
• Marked as the 100th vessel designed by the Navy’s Warship Design Bureau.
• Fast construction timeline: laid down Dec 2017, launched May 2022, delivered July 2025.

INS Himgiri Key Highlights

• Built by Garden Reach Shipbuilders and Engineers (GRSE), Kolkata; first Project 17A frigate from this yard.
• Displacement: About 6,670 tonnes; length: 149 meters.
• Enhanced stealth features to reduce radar and infrared signatures.
• Propulsion: CODOG system with speeds over 28 knots.
• Armament includes BrahMos missiles, Barak 8 air defense system, Close-In Weapon Systems, anti-submarine rocket launchers, torpedo tubes, and advanced electronic warfare systems.
• Equipped with MF-STAR AESA radar, BEL HUMSA-NG sonar, and Ajanta electronic warfare suite.
• Aviation capabilities with flight deck and hangar supporting MH-60 Romeo, ALH Dhruv Mk-III, and Sea King helicopters.
• Around 75% indigenous content.
• Launched in Dec 2020, delivered July 2025, continuing the legacy of the original INS Himgiri (1974–2005).

General Significance

• Both ships have reduced radar cross-sections, composite superstructures, and flush-mounted systems to enhance stealth.
• They operate with a Combined Diesel or Gas (CODOG) propulsion system and an Integrated Platform Management System (IPMS) for automation.
• Their commissioning is a milestone in India's defense self-reliance, modular shipbuilding, and naval modernization.
• These frigates strengthen India’s ability to operate across the Indian Ocean, enhancing maritime security and power projection.
• This simultaneous commissioning at Visakhapatnam marks a new era of operational capability and naval autonomy for India.

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