India Set to Induct INS Aridhaman Nuclear Submarine

India is preparing to commission its third indigenously built nuclear-powered ballistic missile submarine, INS Aridhaman, marking a major expansion of the nation’s sea-based nuclear deterrent. The vessel has entered its final phase of trials, with the Navy confirming that induction will take place soon.

Progress in India’s Nuclear Submarine Programme

INS Aridhaman follows the recent commissioning of INS Arighaat, which joined the Strategic Forces Command in August. With the addition of INS Aridhaman, India will operate three ballistic missile submarines simultaneously for the first time. This enhances the credibility of India’s second-strike capability under its nuclear doctrine.

Advanced Missile-Carrying Capability

The new submarine is built on an improved design that allows it to carry more long-range nuclear-capable missiles than its predecessors INS Arihant and INS Arighaat. Its larger configuration also improves endurance and survivability. A fourth submarine in the series is currently under construction and will further strengthen India’s strategic depth.

Navy Initiatives in the Indian Ocean and Africa

Admiral Dinesh Tripathi highlighted recent outreach missions such as the Indian Ocean Ship Sagar initiative involving navies from nine regional nations. Another engagement, the Africa-India Key Maritime Exercise, was conducted with nine African partner countries in Dar es Salaam, promoting cooperation and shared maritime practices.

Exam Oriented Facts

• INS Aridhaman is India’s third indigenously built nuclear ballistic missile submarine.
• INS Arighaat was commissioned into the Strategic Forces Command in August 2025.
• The submarine class is designed to carry long-range K-4 nuclear-capable missiles.
• A fourth SSBN is already under construction to expand deterrent capability.

Modernisation Efforts and Operational Posture

The Navy expects to receive four Rafale fighter jets by 2029 as part of its aviation upgrade programme. Project 75 India, which aims to acquire six advanced submarines, is also nearing formal approval. Admiral Tripathi noted that during Operation Sindoor, assertive naval deployment, including a carrier battle group, compelled Pakistan’s fleet to remain near its coastline, underlining India’s strengthened maritime posture.