4. Reliance Defence
Celebrating its 20th year of business this year, Reliance Defence and Engineering Ltd., previously known as Offshore Engineering Company Limited and Pipavav Shipyard Limited & Pipavav Defence is a Mumbai-based shipbuilding and heavy industry company. The firm boasts a shipyard spread over 500 acres, with more than 720 meters of exclusive waterfront, which allows it to do business with an array of other shipping partners and accommodate ships weighing up to 400,000 tons. Among the products and services offered by Reliance Defence are heavy engineering, shipbuilding, repairs and conversions, and offshore & engineering work. As the third-largest shipping firm in India with respect to market capitalization, and the second-largest in terms of assets, Reliance Defence has little trouble carving out a sizeable piece of the shipping and offshore sector for itself.