India Clears 2 Nuclear Submarines with Hypersonic Missiles; L&T to Lead Construction

India has officially approved the development of 2 nuclear-powered attack submarines as part of Project-77. This is a big step forward in strengthening the country’s naval capabilities. These submarines will be built with help from Larsen & Toubro (L&T), the Defence Research and Development Organisation (DRDO), and the Shipbuilding Centre in Visakhapatnam.

What Are Nuclear-Powered Attack Submarines?

These submarines, called SSNs, use nuclear reactors to run for long periods underwater and travel faster than regular submarines. Unlike Arihant-class submarines, which are built mainly for nuclear deterrence, these new SSNs will have tactical roles. They will track enemy ships and carry out precise attacks during high-risk missions. The submarines will be armed with advanced BrahMos missiles and future hypersonic weapons developed by DRDO. These missiles can hit targets up to 2,000 km away, allowing the Navy to strike from safe distances.

L&T’s Key Role in Building Submarines

L&T is no stranger to such complex projects. It previously worked on Arihant-class submarines and has proven its expertise in building hulls and pressure compartments. For Project-77, L&T will produce vital parts at its Hazira facility in Gujarat. The company’s experience and modern infrastructure have earned it the government’s trust for this critical program.

Focus on Supersonic and Hypersonic Missiles

In a major strategic move, the Navy has decided to equip these submarines with faster supersonic and hypersonic cruise missiles rather than slower sub-sonic ones. High-speed missiles are harder to detect or shoot down, making them more effective in modern warfare. According to sources, the Navy believes sub-sonic missiles are too vulnerable against current air defence systems. By using faster missiles, India aims to ensure its submarines can carry out powerful and swift attacks even in heavily defended areas.

Strengthening India’s Maritime Defence

These next-generation submarines will significantly boost India’s undersea strike power and strengthen deterrence across the Indo-Pacific region. The project shows India’s commitment to modernising its defence systems to face emerging security challenges.

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Larsen and Toubro Share Price Movement

On July 8, 2025, Larsen and Toubro share price was trading at ₹3,607.00, up 0.71% for the day. The stock opened at ₹3,580.00, reached a high of ₹3,614.00, and a low of ₹3,560.00. The company has a market capitalisation of ₹4.96 lakh crore, a P/E ratio of 33.01, and a dividend yield of 0.94%. Its 52-week high stands at ₹3,963.50, while the 52-week low is ₹2,965.30. The quarterly dividend amount is ₹8.48 per share.

Conclusion

Project-77 marks a bold step in India’s defence strategy. With L&T leading construction and the inclusion of cutting-edge missile technology, these submarines will help India maintain a strong and credible naval presence in an increasingly competitive region.

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