what is the name of india's second commission nuclear powered ballistic missile submarine

India's second nuclear-powered ballistic missile submarine is named INS Arighaat. It is an Arihant-class submarine and was commissioned on August 29, 2024, at Visakhapatnam. INS Arighaat is an upgraded version of INS Arihant, capable of carrying up to twelve K-15 SLBMs with a range of about 750 kilometers or up to four nuclear-armed K-4 SLBMs with a range of over 3,500 kilometers. It represents a critical component of India's nuclear triad for strategic deterrence.