Mazagon Dock Shipbuilders Limited, based in Mazagaon, Mumbai, is a premier shipyard engaged in building warships and submarines for the Indian Navy, along with offshore platforms and support vessels for oil exploration. The company also manufactures tankers, bulk carriers, passenger ships, and ferries. Established in the 18th century, the shipyard has undergone multiple ownership transitions, including management under the Peninsular and Oriental Steam Navigation Company and the British-India Steam Navigation Company. It was officially registered as 'Mazagon Dock Limited' in 1934 and later nationalized in 1960. Today, it operates as a Public Sector Undertaking under the Government of India.