Mazagon Dock Shipbuilders

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Mazagon Dock Shipbuilders Limited
Founded1934; 88 years ago (1934)[1]
Key people
Narayan Prasad
(Chairman & MD)
ProductsNaval ships
offshore platforms
Bulk carriers
Platform supply vessels
Patrol boats
ServicesShip design
Ship building
Ship repair
RevenueIncrease 5,289.53 crore (US$660 million) (2019)[2]
Increase 830.78 crore (US$100 million) (2019)[2]
Increase 519.40 crore (US$65 million) (2019)[2]
Total assetsIncrease 20,402.11 crore (US$2.6 billion) (2019)[2]
Total equityIncrease 2,805.89 crore (US$350 million) (2019)[2]
OwnerGovernment of India (84.83%)
Number of employees
8790 (March 2018)[3]
DivisionsShipbuilding, Submarine & Heavy Engineering

Mazagon Dock Shipbuilders Limited (MDL) (IAST: Majhagānv Dawk Limiṭeḍ), formerly called Mazagon Dock Limited,[4] is a shipyard situated in Mazagaon, Mumbai. It manufactures warships and submarines for the Indian Navy and offshore platforms and associated support vessels for offshore oil drilling. It also builds tankers, cargo bulk carriers, passenger ships and ferries.[5][1]

MDL is a public sector undertaking managed by the Ministry of Defence, with the Government of India holding a 84.83% stake. Its shipbuilding segment has indigenously built stealth frigates, destroyers, guided-missile destroyers, corvettes, landing platform docks, missile boats, patrol boats, trailing suction hopper dredgers, cargo ships, cargo-passenger ships, platform supply vessels, Voith tugs and BOP vessels, while its submarine segment has built conventional submarines and stealth submarines. Both segments have also performed repair and refit activities.[6][7][8]


The shipyards of MDL were established in the 18th century. Ownership of the yards passed through entities including the Peninsular and Oriental Steam Navigation Company and the British-India Steam Navigation Company. Eventually, 'Mazagon Dock Limited' was registered as a public company in 1934. The shipyard was nationalised in 1960 and is now a public sector undertaking of the Government of India.[1]

Vice Admiral Narayan Prasad, AVSM, NM, IN (Retd), is the Chairman & Managing Director (CMD) of Mazagon Dock Shipbuilders Limited. The retired naval officer took over his current position on 30 December 2019.[9]


The activities at the yard are shipbuilding, submarine building, and fabrication of offshore structures. It has manufacturing facilities in Mumbai and Nhava.

The yard has the capability to build warships, submarines, and merchant ships up to 30,000 dead weight tons (DWT).[10] It can fabricate wellhead platforms, process and production platforms, and jack-up rigs for oil exploration.

Naval projects[edit]


Nilgiri-class frigate[edit]

The first warship built by MDL was the 2900-ton displacement, INS Nilgiri, the lead ship of her class. She was launched on 15 October 1966 and commissioned on 23 June 1972. Five more frigates of this class were built over the next nine years for the Indian Navy.[11]

Godavari-class frigate[edit]

While construction of the Nilgiri class was being completed, the Indian Navy proposed requirements for an indigenously designed and built frigate. This new frigate was to be of wholly Indian design and manufacture. To address these requirements, MDL designed and built the Godavari-class guided-missile frigates with a 3,800-tonne displacement and ability to embark two helicopters. Three ships of the class were built by MDL – the lead ship, INS Godavari, INS Ganga and INS Gomati.[12]

Khukri-class corvettes[edit]

INS Kuthar

MDL designed and built the first two vessels of the Khukri-class corvettes for the Indian Navy. The lead vessel of the class was commissioned on 23 August 1989, and the second, INS Kuthar, on 7 June 1990. The remainder of the class were built at Garden Reach Shipbuilders and Engineers (GRSE) following a transfer of technology from MDL to diversify warship building capabilities to other yards, as well as to make room at MDL for larger projects.[13]

Delhi-class destroyers[edit]

The next class of vessels designed and built by MDL were the Project 15 Delhi-class guided-missile destroyers. These were powered by gas turbines and displaced 6,200 tonnes. The first of the class, INS Delhi, was launched in February 1991 and commissioned on 15 November 1997. The second, INS Mysore, was commissioned on 2 June 1999 followed by the last ship in the series, INS Mumbai, on 22 January 2001.[14]

Shivalik-class frigates[edit]

INS Shivalik

The 6000-ton Shivalik-class (Project 17) frigates are the first warships with stealth features to be designed and built in India. These multi-role, guided-missile frigates have reduced radar signature and have entered service from 2010 onwards. At least three of this class have been construction at MDL. The lead vessel of the class commissioned on 29 April 2010. The last ship of the class, INS Sahyadri, was launched on 27 May 2005 and commissioned on 21 July 2012.

Kolkata-class destroyers[edit]

Kolkata-class vessels are the next-generation of guided-missile destroyers in the 7,400-tonne range to be designed and built at MDL. They incorporate stealth features. The lead vessel of the class was launched on 30 March 2006. At least three vessels of the class were planned. All three are in active service.

Visakhapatnam-class destroyers[edit]

INS Visakhapatnam

Visakhapatnam-class vessels are the next-generation of guided-missile destroyers in the 7,500-tonne range to be designed and built at MDL. They incorporate stealth features and improved weapon and avionics compared to Kolkata class. The lead vessel of the class was launched in 2018. At least four vessels of the class are planned.

Nilgiri-class frigates[edit]

Nilgiri class vessels are the next-generation of guided-missile Frigates in the 6,500-tonne range to be designed and built at MDL and GRSE. They incorporate stealth features. The lead vessel of the class was launched on 28 September 2019. At least seven vessels of the class are planned. Four will be built by MDL while the rest three by GRSE.

Coast Guard vessels[edit]

The yard builds offshore patrol vessels (OPVs) for the Indian Coast Guard. These vessels are specialised ships built for patrolling, policing, search and rescue operations in India's exclusive economic zone. Each carries a helicopter on board. Seven such ships have been delivered to the Coast Guard.

Floating police stations[edit]

Based on the order by the BSF the yard started construction of floating border out posts (BOPs). Essentially these BOPs are floating police stations with four high-speed boats. The yard has delivered 9 out of an order of 14 BOPs.

Other vessels[edit]

Among other ships, the yard has built three fast missile boats, a cadet training ship, and other utility ships for the Indian Navy. It has also built Kangan class water tankers for the Iranian naval forces.[15]


Shishumar-class submarine[edit]

Launch of INS Vagsheer submarine

The Shishumar-class submarines are a variant of the Type 209 diesel-electric submarine designed by Howaldtswerke-Deutsche Werft. Two vessels of this class were constructed at MDL. These were the first two indigenously built submarines in India. INS Shalki was commissioned on 7 February 1992 and INS Shankul was commissioned on 28 May 1994.

Kalvari-class submarine[edit]

MDL is building six diesel-electric submarines of the Kalvari class under a technology-transfer agreement with DCNS. INS Kalvari, the first in this class was commissioned by Indian Prime Minister Narendra Modi on 14 December 2017 from Naval Dockyard in Mumbai.[16]

Commercial projects[edit]

Offshore platforms[edit]

MDL builds offshore oil drilling platforms. It operates facilities at Alcock, Mumbai and at Nhava Yard for construction of platforms with wellhead, water injection and production separator and glycol process capabilities, as well as jackup rigs, SBMs and other offshore structures.[17]

Repair and maintenance jobs on offshore rigs are undertaken at Alcock; jackets up to 80 m length and 2,200-tonne weight can be constructed. At Nhava, jackets up to 80 m length and 2,300-tonne weight, main decks up to 550-tonne weight and helipads of 160-tonne weight can be constructed.

The yard builds specialist vessels able to clean oil spills and fight fires on offshore drilling platforms.

A welding training school develops and maintains welding techniques and procedures.

See also[edit]


  1. ^ a b c Introduction Archived 19 April 2016 at the Wayback Machine Mazagon Docks Ltd
  2. ^ a b c d e "Balance Sheet 31.03.2019".
  3. ^[bare URL PDF]
  4. ^ "Company Name Change of Mazagon Dock Shipbuilders Ltd". Goodreturn. Archived from the original on 8 March 2021. Retrieved 8 March 2021.
  5. ^ Author. "gMazagon". Retrieved 31 January 2018. {{cite web}}: |last= has generic name (help)
  6. ^ "Mazagon Dock Shipbuilders Limited" (PDF). HDFC Securities. Retrieved 18 November 2022.
  7. ^ "Mazagon Dock Shipbuilders eyeing orders worth Rs 1.59 trillion from Indian Navy". Financial Express. Retrieved 18 November 2022.
  8. ^ "Mazagon Dock Shipbuilders hits new high on heavy volumes; up 27% in 2 days". Business Standard. Retrieved 18 November 2022.
  9. ^ Author. "gMazagon". Archived from the original on 16 October 2016. Retrieved 27 November 2017. {{cite web}}: |last= has generic name (help)
  10. ^ "Mazagon Dock Shipbuilders Limited – Ship Builder to the Nation". Archived from the original on 19 April 2016.
  11. ^ "F 33 Nilgiri Class". Global Retrieved 8 December 2006.
  12. ^ "F 20 Godavari Class Frigate". Global Retrieved 8 December 2006.
  13. ^ "P 49 Khukri Class". Global Retrieved 8 December 2006.
  14. ^ "D Delhi Class Destroyer". Global Retrieved 8 December 2006.
  15. ^ Saunders, Stephen; Philpott, Tom, eds. (2015), "Iran", IHS Jane's Fighting Ships 2015–2016, Jane's Fighting Ships (116th Revised ed.), Coulsdon: IHS Jane's, p. 394, ISBN 9780710631435, OCLC 919022075
  16. ^ "PM Narendra Modi dedicates scorpene-class submarine INS Kalvari to the nation". The Economic Times. 14 December 2017. Retrieved 14 December 2017.
  17. ^ [1] Archived 4 November 2008 at the Wayback Machine

Coordinates: 18°58′02″N 72°51′00″E / 18.96713°N 72.84993°E / 18.96713; 72.84993

External links[edit]