INS Aridaman Nuclear Submarine: India’s Second Strike Capability Explained

Context: INS Aridaman Nuclear Submarine

India inducted INS Aridaman (~7000 tonnes), strengthening the sea-based leg of nuclear deterrence and assured second-strike capability.

INS Aridaman Nuclear Submarine
INS Aridaman Nuclear Submarine
INS Aridaman Nuclear Submarine
INS Aridaman Nuclear Submarine
PYQ – 2016, Ans – C

Key Points

  1. Platform Role
    • Nuclear-powered submarine carrying ballistic missiles with nuclear warheads
    • Can remain underwater for months → difficult to detect
    • Ensures retaliation even after first strike
  2. Capability Expansion (India)
    • INS Arihant (2016) → 4 launch tubes
    • INS Arighaat (2024) → improved systems
    • INS Aridaman (2026) → ~7000 tonnes, 8 launch tubes
    • Result → higher missile load + longer endurance + better survivability
  3. Missile Capability
    • K-15 Sagarika → ~700–750 km
    • K-4 → ~3500 km
    • Both are submarine-launched ballistic missiles carrying nuclear warheads
  4. Range Advantage
    • K-15 required submarines to move closer to enemy coast
    • K-4 enables strikes from deep sea zones
    • Result → lower detection risk + safer deployment

Strategic Impact
• Sea-based platform = most survivable leg of nuclear triad
• More missiles per patrol + longer underwater stay
• Ensures credible second-strike capability

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