Comparative analysis of shipbuilding companies; Mazagon Dock jumps nearly 13 per cent! Comparative analysis of shipbuilding companies; Mazagon Dock jumps nearly 13 per cent! The top gainer amongst the three is Mazagon Dock Shipbuilders, aptly called ‘Ship Builder to the Nation’. It is one of India’s leading defence public sectors Karan Dsij / Monday, August 29, 2022 / Article rating: 3.7 Amidst all this chaos, there was a group of stocks that hogged most of the limelight. These stocks belonged to shipbuilding companies and they rose between 4 and 13 per cent on a black Monday.