Launch of missile from Arihant a milestone. But India’s nuclear triad isn’t complete yet

Operating covertly from the depths of the ocean and striking with nuclear weapons is the leitmotif of Ship Submersible Ballistic Nuclear or SSBN submarines. Such capability was demonstrated by India on 14 October this year in the firing of the nuclear-capable missile, Sagarika/K-15, from its first SSBN, the INS Arihant. The submarine was launched in July 2009, with sea trials commencing in December 2014, and was commissioned into the Indian Navy in August 2016. It undertook its first deterrence patrol in 2018, soon after the K-15 missile was first test-fired from the submarine.