India on Thursday (Aug 29) formally commissioned its second Arihant-class submarine into its navy. The nuclear-powered submarine, INS Arighat, is considered an advanced version of its predecessor.

India’s second-ever home-built nuclear-powered submarine. Named 'slayer of enemies', Arighat follows in the footsteps of the Arihant, marking significant progress in India’s nuclear triad ...

The Pakistan Navy has two Agosta-70 (Hashmat class) and three Agosta-90B ... conventional submarines and one nuclear-powered submarine, INS Arihant, while the Pakistan Navy is lagging behind ...