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INS Aridhaman Joins Indian Navy, Strengthens Nuclear Deterrence

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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