INS Aridhaman, India’s latest nuclear-powered ballistic missile submarine (SSBN), was commissioned on April 3, 2026, significantly strengthening the country’s sea-based nuclear deterrence as part of the Arihant-class fleet. With improved size, endurance and firepower, the submarine enhances India’s second-strike capability, a key pillar of its nuclear defence strategy.What sets INS Aridhaman apart from INS Arihant and INS Arighaat is its larger size and significantly greater strike capacity. The submarine is around 1,000 tonnes heavier and carries double the missile payload, substantially boosting its offensive potential.Features and strike capability Weighs approximately 7,000 tonnes with nearly 90 percent indigenous technology Equipped with…