Answer: INS Arihant
Notes: INS Arihant is a nuclear-powered submarine built by India. It is first indigenously built nuclear propelled strategic submarine and is the lead ship of the Arihant-class of submarines. It was designed and constructed as part of India's nuclear weapons program. INS Arihant is India's first indigenous nuclear-powered submarine, and it was designed to carry and launch ballistic missiles. The submarine was launched in 2009 and completed its sea trials in 2016. It is currently in service with the Indian Navy.
