India's submarine force is a cornerstone of national security, providing the assured second-strike nuclear capability that underpins strategic deterrence and the undersea warfare capability that protects India's vital sea lines of communication. The Bharat Defence Tech Show has consistently featured authoritative discussions on India's submarine programme, drawing on the expertise of advisory board members with direct experience in submarine command and capability development.
The INS Arihant class of Ship Submersible Ballistic Nuclear (SSBN) submarines represents India's most strategically significant military achievement in decades. By providing an assured second-strike nuclear capability from undersea — the most survivable basing mode — Arihant and its successors complete India's nuclear triad and fundamentally enhance the credibility of India's minimum deterrence posture. BDTS has facilitated careful, security-appropriate discussions of the strategic implications of SSBN induction without compromising operational security.
India's conventional submarine fleet, currently comprising the Kilo-class SSKs and the newer Scorpene-class boats built at Mazagon Dock Shipbuilders, faces a numerical gap that the P75 (India) programme is designed to address. The selection process for P75(I) — which will see six advanced submarines built indigenously with foreign technology collaboration — has been closely followed in BDTS forums, with discussions on the industrial preparedness requirements, Air Independent Propulsion technology options, and the combat management system architectures that bidders are offering.
Unmanned Underwater Vehicles for mine countermeasures, intelligence gathering, and autonomous surveillance have emerged as a significant growth area in India's undersea warfare portfolio, with several Indian technology companies presenting capabilities at BDTS that are being evaluated by the Indian Navy.
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