Manufacturer catalog

Mazagon Dock Shipbuilders Limited

Mazagon Dock Shipbuilders Limited is an Indian Ministry of Defence shipyard at Mumbai, producing frontline naval vessels, submarines, patrol craft, support vessels, and offshore engineering structures. Official company material describes MDL as a Navratna defence public sector undertaking, a lead shipyard for major surface combatants, and the only Indian shipyard credited with building both destroyers and conventional submarines for the Indian Navy.

2 weapons

MDL traces its dockyard history to a small dry dock at Mazagon in 1774 and its modern corporate form to incorporation as a private limited company in 1934. After Government of India takeover in 1960, the yard expanded from ship repair into multi-unit naval construction, submarine work, commercial vessels, offshore platforms, and heavy engineering.

The company's public portfolio is centered on naval ships and submarines but also includes littoral combat ships, auxiliary vessels, tugs, barges, dredgers, ferries, cargo vessels, and special products. MDL says it has built 806 vessels since 1960, including 31 warships and 8 submarines, with facilities at Mumbai and Nhava supporting modular construction and submarine assembly.

Naval shipbuildingDestroyers and frigatesSubmarine construction and refitOffshore patrol and support vesselsCommercial and auxiliary vesselsOffshore platforms and heavy engineering

Notable Systems

Kolkata-class destroyer, Stealth guided-missile destroyer class, Naval Systems

Kolkata-class destroyer

Stealth guided-missile destroyer class

The Kolkata class represents the Project 15A guided-missile destroyer line built at MDL, with Government of India material placing the three-ship class between the earlier Delhi-class Project 15 destroyers and the later Project 15B Visakhapatnam line.

Sources: Project 15 to Project 15B destroyer line | PIB, MDL annual report FY 2024-25
Mahendragiri, Project 17A frigate, Naval Systems

Mahendragiri

Project 17A frigate

Mahendragiri is the sixth Nilgiri-class / Project 17A frigate and the fourth ship of the class built at MDSL, delivered to the Indian Navy at Mumbai on 30 April 2026.

Sources: PIB Mahendragiri delivery, MDL Mahendragiri delivery

Manufacturer History

  1. Mazagon dockyard origin

    MDL's official history traces the yard's origin to a small dry dock constructed at Mazagon in 1774.

    Sources: MDL who we are, MDL annual report FY 2024-25

  2. Private limited company incorporated

    Official company material says Mazagon Dock was incorporated as a private limited company in 1934.

    Sources: MDL who we are, MDL annual report FY 2024-25

  3. Government takeover

    MDL says the yard grew rapidly after Government of India takeover in 1960, becoming a premier Indian warship construction yard.

    Sources: MDL who we are

  4. Navratna public-sector status

    The Ministry of Defence's 2024 year-end review said MDL received Navratna status in June 2024, making it the first government-owned shipyard and third defence public sector undertaking with that status.

    Sources: MoD year end review 2024

  5. Mahendragiri delivered

    Government and company releases record delivery of Mahendragiri, the fourth MDL-built Project 17A frigate, to the Indian Navy at MDSL, Mumbai.

    Sources: PIB Mahendragiri delivery, MDL Mahendragiri delivery

Website links
Official websiteWho we areProductsAnnual reportsContact

Official and government sources use MDL as a common abbreviation for Mazagon Dock Shipbuilders Limited. Older material may use Mazagon Dock Limited for the same Mumbai shipyard lineage.

Manufacturer Sources

  • MDL official websitePublisher: Mazagon Dock Shipbuilders Limited | Note: Official website supporting MDL's identity as a Navratna defence public sector undertaking under the Ministry of Defence and its delivered-vessel, warship, submarine, and product-range claims. | Accessed: 2026-07-11
  • MDL who we arePublisher: Mazagon Dock Shipbuilders Limited | Note: Official company background supporting the 1774 dockyard origin, 1934 incorporation, 1960 government takeover, shipyard role, vessel totals, Navratna and Mini-Ratna status, Project 17A and Scorpene context, and destroyer/submarine distinction. | Accessed: 2026-07-11
  • MDL productsPublisher: Mazagon Dock Shipbuilders Limited | Note: Official products page supporting MDL's portfolio categories, including naval ships, submarines, littoral combat ships, auxiliary vessels, tugs, barges, dredgers, support vessels, ferries, cargo vessels, and special products. | Accessed: 2026-07-11
  • MDL contactPublisher: Mazagon Dock Shipbuilders Limited | Note: Official contact page supporting MDL's corporate office address at Dockyard Road, Mazagon, Mumbai. | Accessed: 2026-07-11
  • MDL annual report FY 2024-25Publisher: Mazagon Dock Shipbuilders Limited | Note: Official annual report supporting MDL's Ministry of Defence status, Mumbai and Nhava facilities, 1934 corporate origin, lead-shipyard role for major surface combatants, submarine assembly capability, vessel totals, Navratna status, and FY 2024-25 milestones. | Accessed: 2026-07-11
  • MoD year end review 2024Publisher: Press Information Bureau, Government of India | Note: Government release supporting MDL's June 2024 Navratna status and the January 2024 contract for 14 Fast Patrol Vessels for the Indian Coast Guard. | Accessed: 2026-07-11
  • Project 15 to Project 15B destroyer line | PIBPublisher: Press Information Bureau, Government of India | Note: Government release supporting the Project 15, Project 15A, and Project 15B destroyer lineage; MDL construction of Surat and Nilgiri; and Project 17A construction at MDL and GRSE. | Accessed: 2026-07-11
  • PIB Mahendragiri deliveryPublisher: Press Information Bureau, Government of India | Note: Government release supporting Mahendragiri's 30 April 2026 delivery at MDSL, Mumbai; its identity as the sixth Project 17A ship and fourth MDSL-built ship of the class; class capabilities; indigenous-content context; and the official image used here. | Accessed: 2026-07-11
  • MDL Mahendragiri deliveryPublisher: Mazagon Dock Shipbuilders Limited | Note: Official company press release supporting MDL's delivery of Mahendragiri, the fourth Project 17A stealth frigate built by MDL, to the Indian Navy on 30 April 2026. | Accessed: 2026-07-11

Produced weapons

Category

Naval Systems

Warships, submarines, unmanned surface vessels, naval craft, and maritime combat systems.

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