India’s Nuclear Triad Strengthened, but Continuous At-Sea Deterrence Still Elusive

SOURCE: RAUNAK KUNDE / NEWS BEAT / IDRW.ORG

The induction of INS Arighat, India’s second nuclear-powered ballistic missile submarine (SSBN), has significantly enhanced the country’s nuclear triad. However, naval officials, speaking anonymously to idrw.org, have cautioned that India has yet to establish continuous at-sea deterrence, a strategic capability that ensures at least one SSBN is always on patrol, ready to launch a retaliatory nuclear strike.

The commissioning of INS Aridhaman, the third SSBN in the Arihant class, is expected to be a pivotal moment for India’s nuclear deterrence strategy. This submarine, with a 1000-ton additional displacement and codenamed S4, is scheduled to join the Navy in 2025. Aridhaman will allow India to achieve continuous at-sea deterrence, a coveted capability that requires at least one SSBN to be on patrol at all times.