A man watches Indian Navy submarine INS Sindhurakshak on fire in Mumbai late August 13, 2013. An explosion on the Indian submarine on Wednesday killed crew members, India's defence minister said, giving no further details of what he described as one of the greatest tragedies of recent times. Picture taken late August 13, 2013. REUTERS/Vikalp Shah (INDIA - Tags: DISASTER MILITARY TPX IMAGES OF THE DAY)