Naval Shipbuilding & Defence Shipyards
Hull steel, propulsion, combat systems and the shipyards that build India's warships
What this is
- Warship and submarine orders become a long industrial build-out.
- Hull steel, propulsion, combat systems and electronics grow with every new order, exports included.
Why now
- The Navy is modernising its surface fleet and submarines.
- An indigenisation mandate sends steel, propulsion, weapons and electronics orders to Indian shipyards.
What to watch
- New warship/submarine order wins and contract awards
- Project-75I submarine programme progress
- Shipyard capacity expansion and dry-dock investments
- Export orders to friendly foreign navies
- Indigenisation content milestones on major platforms
Major areas
The map groups the anatomy into these areas before you drop into individual components.
Shipyards & Hull Integration
The shipyards that build and integrate complete warships and submarines, plus the warship-grade steel and structural metallurgy that forms their hulls.
Propulsion & Power
Main engines, gensets, turbines and turbo-alternators that power the ship's propulsion and onboard electrical systems.
Combat Systems & Weapons
Missiles, torpedoes, naval guns, explosives and ammunition that arm the platform.
Electronics, Sensors & C4I
Combat management systems, radar, sonar and electronic-warfare suites that let the platform detect, track and engage targets.
Specialty Marine Components
Pumps, valves, batteries, compressors and deck machinery that keep a ship's systems running below decks.
End manufacturers & integrators
The companies that assemble the finished product from everything else in this chain — warship & submarine construction (shipyards).
Mazagon Dock Shipbuilders
ListedIndia's largest warship builder - sole domestic yard for Scorpene submarines and major surface combatants
Cochin Shipyard
ListedLargest public shipyard - built India's indigenous aircraft carrier (IAC Vikrant), ASW corvettes
Garden Reach Shipbuilders & Engineers
ListedCorvettes, frigates, survey vessels and fast patrol craft (Kolkata)
Larsen & Toubro
ListedOnly significant private-sector warship/submarine builder (Kattupalli shipyard; submarine pressure hulls - Arihant-class / Scorpene sections)
Titagarh Rail Systems
ListedOwns Titagarh Naval Systems (Titagarh Shipyard, Kolkata) - Diving Support Craft, Bhishm-class tugboats
Hindustan Shipyard Ltd
UnlistedGovernment-owned (MoD) shipyard at Visakhapatnam - submarines, fleet support ships, submarine MRO
Goa Shipyard Ltd
UnlistedMini-ratna PSU shipyard - OPVs, fast patrol vessels, naval offshore support craft
Potential bottlenecks
- Limited dry-dock/slipway capacity across India's handful of qualified yardsWarship & Submarine Construction (Shipyards)
- Long multi-year build cycles that tie up capacity per vesselWarship & Submarine Construction (Shipyards)
- Design and technology-transfer dependence on foreign OEMs for submarines and some combat systemsWarship & Submarine Construction (Shipyards)
- Effective monopoly/near-monopoly on indigenous warship-grade steel and submarine alloys limits sourcing flexibilityHull, Steel Plates & Structural Metallurgy
- Long qualification cycles for new material grades on defence programmesHull, Steel Plates & Structural Metallurgy
- Capacity constraints at the few mills certified to produce DMR-grade plateHull, Steel Plates & Structural Metallurgy
- Marine-grade engine/turbine orders are a small, often undisclosed slice of much larger industrial businessesMarine Propulsion Systems & Engines
- Technology dependence on foreign licensors for some high-end marine turbines/gearboxesMarine Propulsion Systems & Engines
- Long qualification and testing cycles before a new engine family enters naval serviceMarine Propulsion Systems & Engines
- Government-owned prime (Bharat Dynamics) dominates missile/torpedo supply, limiting private competitionCombat Systems, Weapons, Explosives & Ammunition
- Long DRDO-to-production technology-transfer cycles for new weapon systemsCombat Systems, Weapons, Explosives & Ammunition
- Export-control and technology-sharing restrictions on advanced munitionsCombat Systems, Weapons, Explosives & Ammunition
- Dominant PSU supplier concentrates programme risk with one anchor vendorNaval Electronics, Sensors, Radar & Sonar
- Several specialist suppliers are not navy-exclusive, diluting capacity available for naval programmesNaval Electronics, Sensors, Radar & Sonar
- RF/microwave and semiconductor component sourcing is still partly import-dependentNaval Electronics, Sensors, Radar & Sonar
- Long qualification cycles before a new component wins naval-grade certificationSpecialty Marine Components
- Naval work is a small, often undisclosed slice of much larger industrial component businessesSpecialty Marine Components
- Some suppliers' naval linkage is weakly evidenced relative to their other end-marketsSpecialty Marine Components
Companies in this theme
32 companies, 28 listed. The 7 end manufacturers & integrators are listed above.
Steel Authority of India (SAIL)
ListedSole domestic producer of DMR-249A/B high-tensile warship-grade steel plate (Rourkela)
Company page →Mishra Dhatu Nigam (MIDHANI)
ListedTitanium alloys and maraging steel for submarine hulls and missile casings
Company page →Kirloskar Oil Engines
ListedMarine/auxiliary diesel gensets alongside its larger industrial/agri engine business
Company page →Bharat Heavy Electricals
ListedSteam turbines, diesel gensets and turbo-alternators for Navy ships/frigates
Company page →Walchandnagar Industries
ListedSpecialised gearboxes/systems for shipyards and defence (also nuclear, space, sugar-machinery)
Company page →Bharat Dynamics
ListedGovernment-owned guided-missile/torpedo maker - Varunastra heavyweight ASW torpedo, SAMs/ATGMs
Company page →Solar Industries India
ListedIndia's largest private explosives maker, diversifying into warheads, detonators and propellant systems
Company page →Premier Explosives
ListedSmaller explosives/detonator maker with ISRO and DRDO exposure
Company page →Zen Technologies
ListedLeading combat training-simulator maker incl. naval gunnery/damage-control simulators, anti-drone systems
Company page →Bharat Electronics
ListedDominant defence electronics PSU - naval radars, sonar (HUMSA/USHUS), EW suites, combat management systems
Company page →Data Patterns (India)
ListedVertically-integrated defence/aerospace electronics - radars, EW, avionics, naval platform electronics
Company page →Astra Microwave Products
ListedRF/microwave and radar-subsystem specialist - T/R modules and RF front-ends for naval radar systems
Company page →Paras Defence and Space Technologies
ListedOptics, electro-optics, EW and space-systems maker with naval EW/optronics relevance
Company page →Apollo Micro Systems
ListedDefence/aerospace embedded-electronics - avionics, torpedo/sonar-related electronics
Company page →DCX Systems
ListedSystem-integration and cable-harness assembly - tier-1/2 supplier into BEL and other primes
Company page →MTAR Technologies
ListedPrecision-engineered components primarily for space/nuclear/clean-energy, with a secondary defence component
Company page →Kirloskar Brothers
ListedIndia's largest pump maker - Marine & Defence vertical, supplied centrifugal pump systems for INS Taragiri
Company page →Kirloskar Pneumatic Company
ListedCompressors, HVAC and air-conditioning systems for ships/submarines
Company page →HBL Engineering
ListedNaval/submarine batteries alongside its now-dominant railway Kavach signalling business
Company page →Azad Engineering
ListedPrecision-forged/machined components for aerospace, energy and defence
Company page →Godrej & Boyce Mfg. Co.
UnlistedPrecision engineering conglomerate - Marine Solutions line (deck machinery, steering gear)
Kineco Kaman Composites (India)
UnlistedComposite structures relevant to naval/defence platforms (JV between Kineco and US-based Kaman Aerospace)
Centum Electronics
ListedESDM - RF/microwave modules, avionics and defence electronics; supplies naval sensor/electronics subsystems
Company page →Common questions
Which listed companies are in India's Naval Shipbuilding & Defence Shipyards supply chain?
NextResearch maps 28 listed companies across 6 layers of the Naval Shipbuilding & Defence Shipyards supply chain. The largest with high exposure, by market cap as of 30 Oct 2026: Bharat Electronics (₹2.69L Cr); Mazagon Dock Shipbuilders (₹68,816 Cr); Steel Authority of India (SAIL) (₹66,419 Cr); Bharat Dynamics (₹35,739 Cr); and Cochin Shipyard (₹29,333 Cr).
What are the layers of the Naval Shipbuilding & Defence Shipyards supply chain?
6 layers: Warship & Submarine Construction (Shipyards); Hull, Steel Plates & Structural Metallurgy; Marine Propulsion Systems & Engines; Combat Systems, Weapons, Explosives & Ammunition; Naval Electronics, Sensors, Radar & Sonar; and Specialty Marine Components.
Who are the end players in Naval Shipbuilding & Defence Shipyards?
In the Warship & Submarine Construction (Shipyards) layer: Mazagon Dock Shipbuilders, Cochin Shipyard, Garden Reach Shipbuilders & Engineers, Hindustan Shipyard Ltd (not NSE-listed) and Goa Shipyard Ltd (not NSE-listed). Also there, with low exposure: Larsen & Toubro and Titagarh Rail Systems.
What are the bottlenecks in India's Naval Shipbuilding & Defence Shipyards supply chain?
Warship & Submarine Construction (Shipyards): Limited dry-dock/slipway capacity across India's handful of qualified yards. Hull, Steel Plates & Structural Metallurgy: Effective monopoly/near-monopoly on indigenous warship-grade steel and submarine alloys limits sourcing flexibility. Marine Propulsion Systems & Engines: Marine-grade engine/turbine orders are a small, often undisclosed slice of much larger industrial businesses. Combat Systems, Weapons, Explosives & Ammunition: Government-owned prime (Bharat Dynamics) dominates missile/torpedo supply, limiting private competition. More by layer on this page.