Why in News
🗞️ Why in News On June 21, 2026, Prime Minister Narendra Modi commissioned three indigenously built naval vessels at Kolkata: the stealth frigate INS Dunagiri, the survey vessel INS Sanshodhak, and the anti-submarine warfare craft INS Agray. All three were built by Garden Reach Shipbuilders and Engineers (GRSE), Kolkata.
The simultaneous commissioning of a frontline frigate, a survey vessel and an anti-submarine craft from a single shipyard underscores the maturing of India’s indigenous warship-building ecosystem and the deepening of the Aatmanirbhar Bharat push in defence.
The Three Vessels
| Vessel | Class / Type | Primary Role |
|---|---|---|
| INS Dunagiri | Project 17A, Nilgiri-class stealth frigate (5th ship) | Multi-role surface combat |
| INS Sanshodhak | Survey Vessel (Large) | Hydrographic survey, charting |
| INS Agray | Arnala-class ASW Shallow Water Craft | Coastal anti-submarine warfare |
INS Dunagiri and Project 17A
INS Dunagiri is the fifth ship of Project 17A, the Nilgiri-class stealth frigates. Project 17A is the follow-on to the earlier Project 17 (Shivalik-class) frigates and incorporates significant improvements in stealth shaping, sensors and weapons.
Key features of the Project 17A frigates include:
- Weapons: BrahMos supersonic cruise missiles for surface strike and the MRSAM (Medium Range Surface to Air Missile) for air defence.
- Indigenisation: Roughly 75% indigenous content, with more than 200 MSMEs in the supply chain.
- Design: Developed by the Navy’s in-house Warship Design Bureau (WDB).
- Stealth: Reduced radar cross-section through hull shaping and radar-absorbent practices.
The Shipbuilding Ecosystem
The vessels were built by Garden Reach Shipbuilders and Engineers (GRSE), a Kolkata-based Defence Public Sector Undertaking. Project 17A frigates are constructed in a split arrangement between GRSE and Mazagon Dock Shipbuilders Limited (MDL), Mumbai, using integrated construction (modular blocks built in parallel and then joined), which compresses build timelines.
Why Indigenisation Matters
| Dimension | Significance |
|---|---|
| Strategic autonomy | Reduces dependence on foreign arms suppliers |
| Economic | MSME participation, jobs, technology spillovers |
| Operational | Easier maintenance, upgrades and spares |
| Export potential | Builds a base for defence exports |
The roughly 75% indigenous content and involvement of 200-plus MSMEs reflect the maturing of a domestic defence-industrial base, aligning with the government’s emphasis on Aatmanirbharta in critical sectors.
Strategic Context
India’s naval modernisation responds to a contested Indo-Pacific maritime environment and the expanding footprint of regional navies in the Indian Ocean Region (IOR). A blue-water navy capable of sea control and sea denial requires a steady induction of frontline combatants. The addition of a survey vessel (for accurate charting that underpins navigation and operations) and an anti-submarine craft (for the persistent undersea threat) shows attention to the full spectrum of maritime capability, not just headline frigates.
Analysis and Way Forward
While the commissioning is a milestone, challenges remain:
- Timelines: Indigenous projects have historically faced delays; integrated construction is helping, but consistency is key.
- Critical sub-systems: Some propulsion and electronic components still have import dependencies that need indigenisation.
- Lifecycle support: Building an ecosystem for maintenance, refits and mid-life upgrades is as important as construction.
The way forward lies in sustaining a predictable order book for shipyards, deepening MSME participation, and investing in indigenous propulsion and sensor technology.
UPSC Relevance
- GS Paper 3 (Security / Defence Technology): Indigenisation of defence production, Aatmanirbhar Bharat in defence, and naval modernisation.
- Prelims: Project 17A (Nilgiri-class), builder GRSE, weapons (BrahMos, MRSAM), designer Warship Design Bureau.
- Mains: “Indigenous warship construction is central to India’s strategic autonomy. Discuss the achievements and challenges.”
Facts Corner
📌 Facts Corner — Knowledgepedia
- INS Dunagiri: 5th ship of Project 17A, Nilgiri-class stealth frigate.
- Builder: Garden Reach Shipbuilders and Engineers (GRSE), Kolkata.
- Weapons: BrahMos supersonic cruise missile and MRSAM air-defence missile.
- Indigenous content: Around 75%, with 200-plus MSMEs in the supply chain.
- Designer: Warship Design Bureau (WDB) of the Indian Navy.
- Also commissioned: INS Sanshodhak (Survey Vessel Large) and INS Agray (Arnala-class ASW Shallow Water Craft).
Sources: Press Information Bureau, Indian Navy, The Hindu
Source: INS Dunagiri and Project 17A: India's Indigenous Stealth Frigates — Ujiyari.com | Free UPSC & State PCS Current Affairs
