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INS Aridhaman, India's third SSBN, to soon bolster nuclear deterrence
INS Aridhaman is currently undergoing advanced trials

INS Aridhaman, India's third SSBN, to soon bolster nuclear deterrence

Dec 02, 2025
02:03 pm

What's the story

India is set to induct its third nuclear-powered ballistic missile submarine (SSBN), INS Aridhaman. The announcement was made by Navy Chief Admiral Dinesh Tripathi. This development comes after the commissioning of INS Arighaat into the Strategic Forces Command in Visakhapatnam in August, marking a significant step in bolstering India's sea-based nuclear deterrent capabilities.

Submarine features

INS Aridhaman: Enhanced capabilities and larger configuration

Once commissioned, INS Aridhaman will mark the first time India has three operational SSBNs at sea. According to The Economic Times, the new submarine is currently undergoing advanced trials and is designed to carry more long-range nuclear-tipped missiles than its predecessors, INS Arihant and INS Arighaat. Its larger configuration expands strike capability and enhances survivability, both crucial elements of India's nuclear doctrine.

Future plans

INS Aridhaman and 4th SSBN to expand nuclear deterrent

Apart from INS Aridhaman, a fourth SSBN is also under construction, a Times of India report had said in August. These submarines will further extend India's nuclear deterrent capabilities. Both upcoming vessels can carry more K-4 missiles due to their larger size. The four platforms are part of the secretive Advanced Technology Vessel (ATV) program launched in the 1990s with an investment of over ₹90,000 crore.

Fleet comparison

India's SSBN fleet compared to global counterparts

India's SSBN fleet is smaller than those of other major nuclear-armed navies. China operates six Jin-class SSBNs equipped with JL-3 missiles (10,000-km range). The United States has a fleet of 14 Ohio-class SSBNs and 53 nuclear attack submarines. Russia also has 14 SSBNs in service, including the Borei class and Delta IV class.