Murmu is the second President to undertake a submarine sortie. In February 2006, APJ Abdul Kalam, the former president of India, experienced a submarine sortie onboard INS Sindhu Raksha

INS Sindhughosh, the lead submarine of her class, was formally decommissioned at Mumbai’s Naval Dockyard after four decades of distinguished service. Commissioned in 1986, the submarine played a key role in strengthening India’s maritime security and naval capabilities