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INS Aridhaman Joins Indian Navy, Strengthens Nuclear Deterrence

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Why in the News?

India quietly commissioned INS Aridhaman, the third indigenously built nuclear powered ballistic missile submarine (SSBN), at Visakhapatnam, strengthening India’s nuclear triad capability.

INS Aridhaman: Key Details

  • Name: INS Aridhaman (S4)
  • Type: Nuclear Powered Ballistic Missile Submarine (SSBN)
  • Class: Arihant Class
  • Displacement: ~7,000 tonnes
  • Built under: Advanced Technology Vessel (ATV) Project
  • Built at: Ship Building Centre, Visakhapatnam

Missile Capability

INS Aridhaman can carry:

  • K 15 Sagarika missiles
    • Up to 24 missiles
    • Range: ~750 km
  • K 4 missiles
    • Up to 8 missiles
    • Range: ~3,500 km
  • Future capability:
    • K 5 nuclear capable missiles (under development)
  • This gives greater firepower compared to earlier submarines.

India’s Nuclear Triad

India now maintains Nuclear Triad:

  • Land Based: Agni missiles
  • Air Based: Fighter aircraft nuclear delivery
  • Sea Based: SSBN submarines (like INS Aridhaman)
  • Countries with Nuclear Triad: India, USA, Russia, China, and France

India’s SSBN Fleet

  • INS Arihant — 2016
  • INS Arighaat — 2024
  • INS Aridhaman — 2026
  • S4* (likely INS Arisudan) — Under trials
[2016] Which one of the following is the best description of ‘INS Astradharini’, that was in the news recently? (a) Amphibious warfare ship (b) Nuclear-powered submarine (c) Torpedo launch and recovery vessel (d) Nuclear-powered aircraft carrier

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