Source: IE
Context: The Indian Navy is commissioning two Nilgiri-class stealth guided-missile frigates, INS Udaygiri and INS Himgiri, at Visakhapatnam — the first time two major surface combatants from different Indian shipyards are inducted simultaneously.
About INS Udaygiri:
- What it is?
- Second ship of Project 17A Nilgiri-class frigates.
- A modern, stealth-capable multi-mission warship designed for anti-surface, anti-air, and anti-submarine warfare.
- Developed by:
- Built by Mazagon Dock Shipbuilders Limited (MDL), Mumbai.
- Designed by Indian Navy’s Warship Design Bureau.
- Features:
- Displacement ~6,670 tonnes, length 149 m, speed 28 knots.
- Weapons: Long-Range Surface-to-Air Missiles (LRSAM), 8 BrahMos supersonic cruise missiles, Barak-8, lightweight torpedoes, rocket launchers, 127 mm main gun, AK-630 rapid fire guns.
- Equipped with modern radars, sonar (Humsa-NG), and Shakti Electronic Warfare suite.
- Propulsion: Combined Diesel or Gas (CODOG).
- Significance:
- Part of Eastern Naval Command (Sunrise Fleet).
- Motto: Sanyuktaha Paramojayaha – In togetherness there is great victory.
About INS Himgiri:
- What it is?
- First Project 17A frigate built at GRSE.
- Stealth guided-missile frigate with advanced weaponry and sensors.
- Developed by:
- Built by Garden Reach Shipbuilders & Engineers (GRSE), Kolkata.
- Designed by Indian Navy’s Warship Design Bureau.
- Features:
- Similar displacement and size to INS Udaygiri (~6,670 tonnes, 149 m).
- Equipped with LRSAM, BrahMos missiles, Barak-8 system, torpedoes, rocket launchers, 127 mm gun, AK-630 guns.
- Integrated stealth design with reduced radar cross-section.
- Propulsion: CODOG, endurance 5,500 NM at economical speed.
- Significance:
- Part of Western Naval Command.
- Motto: Adrushyam Ajayam – Invisible and invincible.









