Why in the News?

India launched its fourth nuclear-powered ballistic missile submarine, codenamed S4*, on October 16, enhancing its nuclear deterrence capabilities amid rising tensions with Canada. This submarine features 75% indigenous content and is equipped with K-4 missiles with a range of 3,500 km. The move aligns with India's strategic focus on submarine warfare to counter potential threats from China and reinforce maritime security.

INS Aridhaman

• Type: Fourth nuclear-powered ballistic missile submarine (SSBN) of the Indian Navy, codenamed S4*.
• It has nearly 75% indigenous content and is equipped only with 3,500km range K-4 nuclear ballistic missiles, which can be fired through vertical launching systems.
• It is equipped with K-4 nuclear ballistic missiles, featuring a range of 3,500 km.
• It enhances India’s nuclear deterrence in the Indo-Pacific region.

Submarine-launched Ballistic Missile Submarines (SSBNs)

• They are nuclear-powered submarines capable of launching ballistic missiles while submerged.
• They serve as a vital component of a nation's nuclear deterrence strategy, allowing for a second-strike capability against adversaries.
• Submarine series
  • S1 - INS Chakra
  • S2 - INS Arihant
  • S3 - INS Arighat
  • S4 - INS Aridhaman