🗞️ Why in News Hindustan Shipyard Limited delivered INS Nipun, the second Nistar-class Diving Support Vessel, to the Indian Navy at Visakhapatnam on July 30, 2026.
The Vessel, in Numbers
| Parameter | Detail |
|---|---|
| Class | Nistar-class Diving Support Vessel |
| Lead ship | INS Nistar |
| This vessel | INS Nipun, second in class |
| Builder | Hindustan Shipyard Limited (HSL), Visakhapatnam |
| Length | About 118 metres |
| Displacement | Over 8,560 tonnes |
| Indigenous content | Roughly 75-80 per cent |
| Delivery | 30 July 2026, Visakhapatnam |
What a Diving Support Vessel Does
A Diving Support Vessel (DSV) is a specialised naval ship built to support deep-sea diving, underwater rescue and salvage operations, functions that become critical when a submarine suffers an emergency at depth and its crew must be reached and recovered before oxygen and time run out. INS Nipun is fitted with:
| Capability | Function |
|---|---|
| Deep-sea saturation diving systems | Allow divers to work at depth for extended periods without the decompression penalty of repeated short dives, by keeping them saturated at working pressure between shifts |
| Remotely Operated Vehicles (ROVs) | Unmanned, tethered submersibles for inspection, salvage assistance and rescue support at depths beyond safe diver range |
| Dynamic positioning system | Automatically maintains the vessel’s exact position over a target on the seabed using thrusters and satellite positioning, without needing to anchor, essential for precision work directly above a stricken submarine or wreck |
Why This Matters Strategically
Submarine rescue capability is a niche but strategically significant naval capacity: a nation operating a submarine fleet without organic deep-rescue capability is dependent on allied nations’ assets arriving in time during an emergency, a dependency that can be operationally and diplomatically costly in a crisis. India’s Deep Submergence Rescue Vessel (DSRV) capability, developed and inducted over the past decade, already gave the Navy some organic rescue reach; the Nistar-class DSVs extend and diversify that capability with dedicated surface-support platforms purpose-built around diving, ROV and salvage operations rather than as an adaptation of another ship class.
| Layer of capability | Asset type |
|---|---|
| Rescue submersible | Deep Submergence Rescue Vessel (DSRV) |
| Surface support and diving platform | Nistar-class Diving Support Vessel (INS Nistar, INS Nipun) |
| Broader indigenisation context | Shipbuilding under Atmanirbhar Bharat / Make in India in defence |
The Indigenisation Angle
At roughly 75-80 per cent indigenous content, INS Nipun sits within India’s broader defence-shipbuilding indigenisation push, which has progressively moved warship and support-vessel construction away from imported hulls and systems toward domestically designed and built platforms, sourced increasingly from India’s own steel, propulsion and electronics supply chains. Hindustan Shipyard Limited, a Ministry of Defence public-sector shipyard at Visakhapatnam, has built a specific niche in specialised naval support vessels, including submarine and diving-support platforms, alongside India’s larger private and public shipyards that focus more heavily on frontline combatants.
UPSC Relevance
GS Paper 3: Various security forces and agencies and their mandate; indigenisation of technology and developing new technology; defence indigenisation under Atmanirbhar Bharat.
Prelims pointers:
- INS Nipun: second Nistar-class Diving Support Vessel, after lead ship INS Nistar.
- Built by Hindustan Shipyard Limited (HSL), Visakhapatnam; delivered 30 July 2026.
- Specifications: about 118 m length, over 8,560 tonnes displacement, 75-80 per cent indigenous content.
- Key systems: deep-sea saturation diving, ROVs, dynamic positioning.
- Distinct from, and complementary to, India’s Deep Submergence Rescue Vessel (DSRV) capability.
Mains question: “Submarine rescue capability is a small but strategically significant dimension of naval self-reliance.” Discuss with reference to India’s Nistar-class Diving Support Vessels and the broader defence indigenisation push. (250 words)
📌 Facts Corner, Knowledgepedia
INS Nipun:
- Nistar-class Diving Support Vessel; second in class after INS Nistar.
- Built by Hindustan Shipyard Limited, Visakhapatnam; delivered 30 July 2026.
- About 118 m, over 8,560 tonnes; 75-80 per cent indigenous content.
- Fitted with deep-sea saturation diving systems, ROVs, dynamic positioning.
Rescue capability layers:
- DSRV: Deep Submergence Rescue Vessel, the rescue submersible itself.
- Nistar-class DSV: surface support and diving platform.
- Builder: HSL, a Ministry of Defence PSU shipyard at Visakhapatnam.
Sources: PIB, Ministry of Defence, Hindustan Shipyard Limited
Source: INS Nipun and India's Deep-Sea Rescue Capability — Ujiyari.com | Free UPSC & State PCS Current Affairs
