- INS Arihant is the first of five nuclear missile submarines planned for induction.
- It is to be equipped with K 15 (or BO-5) shortrange missiles with a range of over 700 km and the K 4 ballistic missile with a range of 3,500 km.
- At present, the only nuclear – powered platform in service is the INS Chakra, a Akula class SSN on lease from Russia.
- The induction of INS Arihant marks the completion of India’s nuclear triad.
- A nuclear triad refers to the nuclear weapons delivery via land, air and sea i.e. land-based intercontinental ballistic missiles (ICBMs), strategic bombers, and submarine-launched ballistic missiles (SLBMs).