Explanation:

arihant is a nuclear powered ballistic     Missile submarine .the 6000 tonne      Vessel was buit under the Advance      Technology vessel programme (ATV)      Project at Visakhapatnam.arihant is to      Be the first of the expected five the            class of submarines Designed and                   constructed as a part of Indian navy’s      ATV project.the arihant class submarine      Is reported to be based on akula class     Submarine.