New Delhi: Defence Minister Rajnath Singh is set to commission India’s second nuclear-powered ballistic missile submarine (SSBN), INS Arighat, at a ceremony in Visakhapatnam on Thursday. The event will be attended by Chief of Naval Staff Admiral Dinesh Tripathi, Vice Admiral Suraj Berry, head of India’s strategic command, and senior officials from the Defence Research and Development Organisation (DRDO).
The commissioning of the 6,000-tonne INS Arighat, also known as S-3, marks a significant step in enhancing India’s nuclear deterrence and second-strike capability. The submarine is expected to embark on a long-range patrol in the Indo-Pacific region, armed with K-15 nuclear ballistic missiles with a range of 750 kilometers. This development strengthens India’s nuclear triad, which already includes land-based and air-launch nuclear capabilities.
India’s first SSBN, INS Arihant (S-2), is already operational. With the addition of INS Arighat, India will now have two SSBNs patrolling the high seas. These submarines are crucial to India’s no-first-use nuclear policy, providing a robust second-strike capability.
In addition to the SSBN fleet, the Indian Navy has approached the Narendra Modi government for approval to build two nuclear-powered conventionally armed submarines (SSNs). Unlike diesel-electric submarines (SSKs), which need to surface frequently to recharge batteries, SSBNs and SSNs can remain submerged for extended periods, with limitations only due to logistics, supplies, and crew changes.
India’s third SSBN, INS Aridaman (S-4), is scheduled for commissioning next year, followed by a fourth submarine, codenamed S-4. These submarines will be more advanced, capable of carrying 3,000-kilometer range nuclear ballistic missiles, and will feature additional missile tubes.
The Indian Navy is also set to enhance its operational capabilities with the commissioning of several new vessels, including the guided missile stealth destroyer INS Surat, the stealth guided missile frigate INS Taragiri, and the sixth Kalvari-class attack submarine INS Vagsheer, all expected within the next six months. Further orders for three more Kalvari-class submarines are anticipated to be placed with Mazagon Dock Shipbuilders Ltd later this year.