Mazagon Dock Shipbuilders Limited engages in building and repairing of ships, submarines, vessels, and related engineering products in India and internationally. It operates in two segments, Shipbuilding and Submarine. It offers naval ships, such as corvettes, nilgiris, missile boats, Godavari class frigates, patrol vessels, destroyers, and leander class frigates; merchant ships, including trailing suction hopper dredgers, general cargo vessels, multipurpose support vessels, offshore supply vessels, special trade passenger cum cargo vessels, 45 T bollard pull voith tugs, and BOP vessels; and submarines. The company was formerly known as Mazagon Dock Limited. Mazagon Dock Shipbuilders Limited was founded in 1774 and is based in Mumbai, India.