🗞️ Why in News The Indian Navy announced that stealth frigate INS Taragiri (F41), the fourth ship of the Nilgiri-class (Project 17A), will be commissioned on April 3, 2026. Simultaneously, DRDO successfully tested the ADC-150 air-droppable container from a P-8I aircraft off Goa.
The Editorial Argument
Hindustan Times argues that INS Taragiri’s commissioning represents more than a new warship — it validates India’s naval indigenisation model where over 75% indigenous content, 200+ MSME suppliers, and modular construction techniques are creating a self-sustaining shipbuilding ecosystem. The editorial calls for extending this model to submarine and aircraft carrier programmes.
Project 17A — The Nilgiri-Class Programme
Project 17A is the Indian Navy’s most ambitious surface combatant programme, designed entirely by the Directorate of Naval Design (DND):
| Feature | Detail |
|---|---|
| Class | Nilgiri-class stealth frigates |
| Total ships | 7 (4 at MDL Mumbai + 3 at GRSE Kolkata) |
| Displacement | 6,670 tonnes |
| Length | ~149 metres |
| Indigenous content | Exceeds 75% |
| Design | Directorate of Naval Design (DND), Indian Navy |
| Cost | ~Rs 48,000 crore for all 7 ships |
| Key feature | Integrated Construction Methodology (modular blocks) |
Ship Status
| Ship | Builder | Status |
|---|---|---|
| INS Nilgiri (F39) | MDL Mumbai | Commissioned August 2024 |
| INS Udaygiri (F40) | MDL Mumbai | Commissioned 2025 |
| INS Dunagiri | GRSE Kolkata | Under sea trials |
| INS Taragiri (F41) | MDL Mumbai | Commissioning April 3, 2026 |
| Ship 5 | GRSE Kolkata | Under construction |
| Ship 6 | MDL Mumbai | Under construction |
| Ship 7 | GRSE Kolkata | Under construction |
Stealth Features
The Nilgiri-class incorporates comprehensive stealth technology:
- Reduced Radar Cross Section (RCS): Sloped superstructure, enclosed mast, internal weapon storage
- IR signature suppression: Engine exhaust cooling systems reduce thermal signature
- Acoustic quieting: Raft-mounted machinery reduces underwater noise — critical for anti-submarine operations
- Electromagnetic emission control: Integrated communications suite minimises electronic signature
Weapons and Sensors
| System | Detail |
|---|---|
| Anti-ship | BrahMos supersonic cruise missiles (Mach 2.8, 450+ km range) |
| Air defence | Barak-8 LRSAM (70 km range; joint India-Israel development) |
| Anti-submarine | Torpedo tubes, rocket launchers, towed array sonar |
| Guns | 76mm Super Rapid Gun Mount (SRGM) |
| Helicopter | Deck and hangar for MH-60R Seahawk |
| Radar | Multi-function surveillance radar; 3D air surveillance |
The Indigenisation Model
Project 17A’s significance lies in its supply chain architecture:
- 200+ Indian MSMEs supply components — from hull steel to electronic warfare suites
- Modular construction: Ship assembled from pre-fabricated blocks (Integrated Construction Methodology) — reduces build time by 30%
- Concurrent construction: MDL and GRSE build ships simultaneously using the same design — first time in Indian naval history
- Technology transfer: BrahMos (India-Russia JV), Barak-8 (India-Israel JV) demonstrate successful defence co-development
ADC-150 — Logistics Innovation
The ADC-150 air-droppable container tested alongside the Taragiri announcement addresses a critical operational gap:
| Feature | Detail |
|---|---|
| Payload | Up to 150 kg |
| Delivery platform | P-8I Neptune maritime patrol aircraft |
| Purpose | Resupply warships at sea without port calls |
| Developers | NSTL (Visakhapatnam) + ADRDE (Agra) |
| Certification | CEMILAC (Bengaluru) |
This capability is essential for sustained naval operations in the Indian Ocean Region — especially during the current heightened deployment in the Arabian Sea and Gulf of Aden.
The 175-Ship Target
India aims for a 175-warship navy by 2035 (current strength: ~130). Key programmes:
| Programme | Ships | Status |
|---|---|---|
| Project 17A (Nilgiri-class frigates) | 7 | 2 commissioned, 5 in progress |
| Project 75 (Scorpene submarines) | 6 | 5 commissioned, 1 in trials |
| Project 75(I) (conventional submarines) | 6 | RFP issued; MDL-ThyssenKrupp shortlisted |
| Indigenous Aircraft Carrier (IAC-2) | 1 | Design phase |
| Next-gen destroyers (Project 18) | — | Conceptual stage |
| Mine Counter-Measure Vessels | 12 | GRSE building |
Make in India in Defence — Broader Context
Defence indigenisation has accelerated under the positive indigenisation lists:
- 5 positive indigenisation lists notified by MoD (2021-2025)
- 411 items banned from import — must be sourced domestically
- Defence production value (2024-25): Rs 1.27 lakh crore (record)
- Defence exports (2024-25): Rs 21,083 crore (record; 30x increase since 2016-17)
- iDEX (Innovations for Defence Excellence): 400+ startups engaged in defence innovation
UPSC Relevance
Prelims: Project 17A, INS Taragiri pennant number, BrahMos range and speed, P-8I base location, NSTL/ADRDE/CEMILAC
Mains GS-3: Defence indigenisation; Make in India in defence; India’s naval modernisation; MSME role in strategic manufacturing
📌 Facts Corner — Knowledgepedia
Project 17A (Nilgiri-class):
- Total: 7 frigates (4 MDL Mumbai + 3 GRSE Kolkata)
- Displacement: 6,670 tonnes; length: ~149 m
- Indigenous content: >75%; supply chain: 200+ Indian MSMEs
- Design: Directorate of Naval Design (DND)
- Stealth features: Reduced RCS, IR suppression, acoustic quieting
- Cost: ~Rs 48,000 crore for all 7 ships
BrahMos Missile:
- Joint venture: India (DRDO) + Russia (NPOM); est. 1998
- Speed: Mach 2.8; Range: 290 km (extended: 450+ km after MTCR, 2016)
- Named after: Brahmaputra (India) + Moskva (Russia)
- Variants: Ship, submarine, air (Su-30MKI), land-based
ADC-150 & P-8I:
- ADC-150: Air-droppable container; 150 kg payload capacity
- P-8I Neptune: 12 aircraft; stationed at INS Rajali, Arakkonam
- NSTL: Visakhapatnam (naval systems); ADRDE: Agra (aerial delivery)
Other Relevant Facts:
- Indian Navy strength: ~130 warships; target 175 by 2035
- Defence production (2024-25): Rs 1.27 lakh crore (record)
- Defence exports (2024-25): Rs 21,083 crore (record)
- MDL: Also building Scorpene-class submarines (Project 75)
- iDEX: 400+ defence startups engaged; under DIO (Defence Innovation Organisation)
Sources: Hindustan Times, PIB, Indian Navy