INS Aridhaman: India’s Third Nuclear-Powered Ballistic Missile Submarine

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India is set to bolster its strategic deterrence with the upcoming induction of its third nuclear-powered ballistic missile submarine (SSBN), INS Aridhaman, marking a significant milestone in the country’s naval and nuclear capabilities. This advanced vessel forms a critical component of India’s nuclear triad, designed to enhance second-strike capability and strengthen maritime security.

About INS Aridhaman

INS Aridhaman is the second submarine in the Arihant-class series of SSBNs and represents India’s growing prowess in nuclear-powered underwater platforms. Constructed under the Advanced Technology Vessel (ATV) project, the submarine is being developed at the Ship Building Centre in Visakhapatnam, showcasing India’s domestic technological expertise in strategic defence systems.

Key Features And Specifications

• Dimensions: INS Aridhaman measures 112 meters (367 ft) in length, with a beam of 15 meters (49 ft) and a draft of 10 meters (33 ft), providing optimal balance between stealth and operational efficiency.

• Displacement and Capacity: The submarine has a displacement of 7,000 tonnes and a length of 125 meters, allowing it to carry a larger payload of K-4 ballistic missiles for strategic deterrence.

• Crew Complement: The vessel accommodates approximately 95 personnel, including officers and sailors, ensuring operational readiness for extended underwater deployments.

• Sonar Systems: INS Aridhaman is equipped with a sophisticated combination of sonar technologies:

  • USHUS Sonar: Advanced sonar system specifically designed for Kilo-class submarines, providing enhanced underwater detection and navigation.

  • Panchendriya System: An integrated sonar and tactical control suite, incorporating passive, active, surveillance, ranging, and intercept functionalities.

• Communication and Countermeasures: The submarine features a state-of-the-art underwater communications system along with twin flank-array sonars and Rafael broadband expendable anti-torpedo countermeasures, ensuring superior situational awareness and protection against underwater threats.

Strategic Importance

INS Aridhaman will play a pivotal role in strengthening India’s nuclear triad, offering a credible second-strike capability in the event of nuclear confrontation. Its induction underscores India’s commitment to self-reliance in defence technology, while enhancing deterrence in the Indian Ocean Region (IOR). The combination of advanced sonar systems, missile payload, and underwater stealth ensures that INS Aridhaman remains a formidable asset for India’s naval fleet.

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