The Indian Navy showcased its mighty combat prowess in a spectacular fashion through an Operational Demonstration on the occasion of Navy Day here on Sunday. President of India and the Supreme Commander of Armed Forces Droupadi Murmu was the chief guest at the event organised at Ramakrishna Beach here. This was the first time the Navy Day was celebrated outside New Delhi. Sailors aboard the submarine INS Tarangini, the sail ship that circumvented the world, welcomed the President as they sailed past the venue.