New Delhi: INS Arihant is India’s 1st indigenously built nuclear armed submarine which was commissioned in Indian Navy in August 2016.
It is a 6000 ton, 110 meters long India’s 1st indigenously built nuclear armed submarine which has been developed over the last 4 decades under a secret govt programme.
How INS Arihant was built:
1970: Arihant project was sanctioned by the GOI. 
1984: Design, Technology & project approved.
1998: Work began.
2009: Arihant revealed for the first time.
2013: The nuclear reactor on board Arihant goes critical.
2015-16: Extensive trails
Nuclear weapons onboard INS Arihant:
  •  K15  short range missiles with a range of over 700Km.
  •  K4 ballistic missiles with a range of 3500Km.
Other important factors of INS Arihant
  • INS Arihant is operated by Navy but directly be under the operational command of PMO through Strategic Force Command, not MoD as it’s a strategic nuclear asset of the country.
  • It can launch nuclear weapons from underwater.
  • INS Arihant was not exposed in the International Fleet Review 2016 even though it was ready due to secrecy & security concerns.
  • 2 more Arihant class submarines are being built at Ship building Centre at Vizag.
  • INS Chakra, the 1st nuclear submarine was procured from Russia was commissioned in 2012. 

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