Mazagon Dock Shipbuilders (MDL), known as the ‘Ship & Submarine Builders to the Nation,’ is one of India’s premier defence shipyards, operating under the Ministry of Defence. The company specialize in constructing, repairing, and refurbishing warships and submarines at their facilities. Since its inception as a private limited company in 1934, the company has rapidly expanded its capabilities, becoming a key player in strengthening national defence. MDL is a Lead Shipyard for major Surface Combatants (Destroyers & Frigates); Only Shipyard possessing two Independent Submarine Assembly and Launch Lines. The company is the only Indian shipyard to produce both destroyers and conventional submarines for the Indian Navy and were pioneers in manufacturing Veer & Khukri Class Corvettes.
Its contributions encompass the entire spectrum of naval warfare capabilities-ranging from cutting-edge stealth technologies and sophisticated underwater systems to advanced surface combat readiness. It is the only Indian shipyard to have built destroyers and conventional submarines for the Indian Navy and the Only shipyard in India Conferred with Navratna Status. The Company has played a pivotal role in supporting the Indian Navy’s indigenization goals, contributing significantly to national defence capabilities. MDL has been conferred ‘Navratna’ status by the DPE in June 2024. MDL is the 21st PSU, first amongst the government owned shipyards and 3rd amongst Defence PSUs of the country having ‘Navratna’ status.
Business area of the company
The Company specializes in the construction and repair of warships and submarines for the Indian Navy, as well as vessels for commercial clients. The company has played pivotal role in the design, construction, and timely delivery of a diverse range of frontline naval assets, demonstrating its engineering precision and project execution excellence. Beyond naval defence, its expertise encompasses a wide range of maritime and offshore engineering solutions. The company has also delivered complex marine and offshore structures tailored for the energy sector, including platforms and rigs used in oil and gas exploration.
Product portfolio
Naval Platforms
MDL has a distinguished track record in constructing various naval platforms that play a critical role in enhancing India’s maritime defence capabilities:
Destroyers
Conventional Submarines
Frigates
Corvettes
Missile Boat
Offshore Patrol vessels
Floating Border Outposts
Oil Sector
MDL provides specialised platforms for the oil and gas industry, ensuring robust support for offshore exploration and production:
Offshore Platforms
Jack-up rigs
Merchant Ships
In addition to its defence and oil sector offerings, MDL manufactures a variety of merchant vessels catering to commercial needs:
Coast Guard Ships
- Training Ships
- Next Generation Offshore
- Patrol Vessels
- Fast Patrol Vessels
Services offered by company
- Repairs and Refit
- Designing of Ships
- Training
- Tug Support
- Supply Chain Management
- Self-propeller modular Transporter
Major events in company’s history:
1934: Incorporated as a private company.
1960: Acquired by the GoI.
1972: Delivered the first frigate, INS Nilgiri.
1984: Inauguration of undertaking submarine construction.
1992: Commissoned first Indian built submarine, INS Shalki.
1997: Commissioned first destroyer, INS Delhi.
1998: Accredited with ISO certification for shipbuilding.
2000: Upgraded to Schedule ‘A’ status from Schedule ‘B’.
2006: Awarded Mini Ratna Category–I status.
2009: Implementation of enterprise resource planning and systems applications and products.
2011: Signed shipbuilding contract for construction and delivery of four P15 B misile destroyers with the MoD.
2014: Inauguration of the Mazdock Modernisation project.
2015: Launch of first destroyer class ship ‘Vishakhapatnam’ under P15 B project.
2015: Signed contract for construction and delivery of four frigates with the MoD.
2016: Inauguration of new submarine section assembly workshop at Alcock yard.
2017: Delivery of first Scorpene class submarine ‘INS Kalvari’.
2019: Delivery of second Scorpene class submarine ‘INS Khanderi’.
2020: Listing of MDL in BSE & NSE in 2020.
2021: Delivery of three platforms viz. 3rd & 4th Scorpene class submarine & 1st missile destroyer in 2021.
2022: Historical Double Launching of a missile destroyer and a stealth frigate on May 17, 2022. Launching of 6th submarine on April 20, 2022.
- 2023: Launched 4th stealth frigate (Project 17A) Mahendragiri on September 01.
- 2023: Commissioned INS Imphal, a third destroyer, on December 26.
- 2024: Awarded Navratna status by the Department of Public Enterprises.
- 2024: Delivered the 4th Visakhapatnam Class Destroyer, INS Surat and 1st Nilgiri Class Frigate, INS Nilgiri on December 20, 2024.
- 2025: Delivered the 6th, P-75 Scorpene Class Submarine, INS Vaghsheer on January 09, 2025.
- 2025: Tri-Commissioning on January 15: Indian Navy commissioned three frontline combatants - INS Nilgiri, INS Surat & INS Vagsheer.
Awards and Recognition
2007: Scope Award for Excellence & Outstanding contribution to the Public Sector Management- Special Institutional Category.
2008: Raksha Mantri Award for Excellence for: Best Performing Shipyard, awarded by Raksha Mantri (Ministry of Defence, GoI).
2009: Raksha Mantri Award for Excellence for: Best Performing Shipyard, awarded by Raksha Mantri (Ministry of Defence, GoI).
2010: Golden Peacock Award for Innovative Product / Service Award, awarded by Institute of Directors (IOD).
2010: Accredited with ISO Certification for submarine division.
2011: Aerospace and Defence Award 2011 for Excellence in Innovation, awarded by SAP Media Worldwide Limited.
2012: IIIE Performance Excellence Award, awarded by Indian Institution of Industrial Engineering.
2012: Golden Peacock Awards for Corporate Social Responsibility, awarded by Institute of Directors (IOD).
2012: QCFI - Special Awards for Best Organisation for Promoting 5S concept, awarded by Quality Circle Forum of India.
2013: Aerospace & Defense Awards 2013 - Excellence in Innovation, awarded by SAP Media Worldwide Limited.
2013: Aerospace & Defense Awards 2013 - Most influential company of the Year, awarded by SAP Media Worldwide Limited.
2014: IPSE Awards 2014: Award for Defence & Marine PSE of the year, awarded by PSE journal.
2014: AIOE Annual Award for Outstanding Achievement in Industrial Relations, awarded by All India Organization of Employers.
2015: Awarded two Gold and one Silver Awards at ICQCC- 2015, South Korea (Pending) Rainbow.
2016: Awarded two Gold Awards at ICQCC-2016, Bangkok, Thailand.
2016: Accredited with ISO 9001:2008 Quality Management Systems (QMS) of Shipbuilding Division for the scope of Design, Development, Construction and Servicing of Warships, Merchant Ships and Floating crafts.
2017: Dun & bradstreet PSU awards 2017 for ‘Manufacturing Transportation Equipment’, awarded by Dun & Bradstreet.
2018: Accredited with ISO 9001:2015 Quality Management Systems (QMS) of Shipbuilding Division for the scope of Design, Development, Construction and Servicing of Warships, Merchant Ships and Floating Crafts.
2018: Accredited with ISO 9001:2015 Quality Management Systems (QMS) of Training Department for the scope of Imparting Training to Trade Apprentices and Employees.
2018: National Award for Innovative Training Practices 2017-18 awarded by Indian Society for Training and Development, New Delhi.
2018: NIPM National Award for HR Best Practices 2018.
2019: Accredited with ISO 14001:2015 and OHSAS 18001:2007 for integrated management system for shipbuilding, submarine and heavy engineering, corporate planning and personnel and finance divisions.
2019: Golden Peacock Award for Innovative Product / Service Award, awarded by Institute of Directors.
2019: Awarded India CSR Project of the Year award 2019 by the India CSR Group.
2019: Awarded certificate of appreciation by the Skill Developmemt and Entrepreneurship Department, Directorate of Vocational Education and Training, Government of Maharashtra
2019: Awarded the first position at the 16th National Awards for Excellence in Cost Management 2018 for Manufacturing -Public-Large Sector issued by the Institute of Cost Accountants of India.
2020: The company won the 11th PSE Excellence Award in Human Resource Management Category for the year 2019-20. The award was presented virtually during the PSE Conclave & PSE Excellence Award held on 25 Feb '22.
2021: The National Awards for Excellence in Corporate Social Responsibility (CSR) under the category “Best Relief Package Announced for COVID-19” was conferred to the company by World HRD Congress, Mumbai.
- 2021-22: 11th PSE Excellence Award in Human Resource Management
- 2021-22: Par Excellence Certificate - NCQC 2021
- 2021-22: The National Awards for Excellence in Corporate Social Responsibility (CSR) under the category 'Best Relief Package Announced for COVID-19'\
- 2021-22: 15 Quality Circle teams from MDL presented their case studies in Chapter Convention on Quality Concepts (CCQC-2021) held in September 2021 virtually, and the 14 QC teams won Gold (highest) Award and 01 QC team won Silver Award.
- 2022-23: MDL's in-house magazine 'Jaltarang' was selected as the best magazine by Ashirwad Rajbhasha Sansthan and on September 20, 2022 was awarded first prize by Honorable Governor Shri Bhagat Singh Koshyari at Raj Bhavan.
- 2022-23: Certificate of Par Excellence award (Prabal QC) won at the 47th ICQCC International Convention on Quality Control Circles.
- 2022-23: Certificate of Par excellence award (Ganaji-QC and Anurakshak QC) won at the 36 th NCQC (National Convention on Quality concept) - 2022.
- 2023-24: Mazagon Dock Shipbuilders has been awarded BCC & I Social Leadership award for outstanding contribution in empowering persons with chronic disease by the Bengal Chamber of Commerce & Industry.
- 2023-24: Mazagon Dock Shipbuildershas been awarded BCC & I Social Leadership award for outstanding contribution in empowering persons with chronic disease by the Bengal Chamber of Commerce & Industry.
- 2023-24: Certificate of Par Excellence Award (Eagle Eye) at 37th NCQC 2023.
- 2024-2025: 23 Quality Circle teams from MDL presented their case studies in Chapter Convention on Quality Concepts (CCQC-2024) hosted by M/s Quality Circle Forum of India, Mumbai Chapter held on 28 & 29 September 2024. Out of 21 QC teams won Gold (highest) Award and 02 QC teams won Silver Award.
- 2024-25: MDL was awarded the Rajbhasha Samman Shield for excellent Hindi work by Rajbhasha Academy Institute on August 30, 2024.
- 2024-25: Certificate of Excellence for NAVRATNA Status.
- 2024-25: Best of Best QC Team of the day Award.
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