The correct answer is option 1, Cochin. Cochin, also known as Kochi, is a major shipbuilding center in India. It is located on the southwest coast of the country in the state of Kerala. Cochin has a long history of shipbuilding and is known for its expertise in constructing and repairing ships. The city has several shipyards, including the Cochin Shipyard Limited, which is one of the largest shipbuilding and maintenance facilities in India. Cochin`s strategic location on the Arabian Sea makes it an ideal hub for shipbuilding and maritime trade. The shipbuilding industry in Cochin contributes significantly to India`s economy and plays a crucial role in the development of the country`s shipping and maritime sector.