Mazagon Dock Shipbuilders Ltd (MDS) designs, constructs, and markets ships and submarines. It is involved in the shipbuilding, construction of destroyers, frigates, missile boats, corvettes, submarines, and osffshore patrol vessels for the defense sector. MDS delivers passenger ships, cargo ships, multipurpose support vessels, supply vessels, water tankers, dredgers, tugs, fishing trawlers, barges & border outposts.

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MDS focuses on establishing and maintaining a formal R&D framework, to integrate advanced design, AI-enabled technologies, and digital systems into naval engineering and defense applications. The company strives to build collaborative research partnerships with academic institutions and has supported multiple IIT-led projects under CSR—covering robotic welding and automated programming, plasma surface treatment for corrosion resistance, laser-based hull cleaning, impact modelling for curved FRP panels, time-dependent reliability and structural health monitoring of ship structures, and a circulating water channel facility for fluid dynamics research. MDS aims to promote indigenous technology development through the MDL Innovation Program (MIP), providing project support to start-ups, MSMEs, academic institutions and partner incubators. The company plans to advance indigenization via iDEX collaborations and internal efforts, contributing over a thousand items to the Positive Indigenization List, indigenizing key submarine equipment, and pursuing development of remaining items while engaging industry through outreach and seminars. In FY2025, the company incurred expenses of INR1,175.4 million on R&D, which as a percentage of revenue stood at 5%.