Former DRDO chief VS Arunachalam passes away in United States firstpost.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from firstpost.com Daily Mail and Mail on Sunday newspapers.
Fearless Guardian of the Seas – DailyNews dailynews.lk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from dailynews.lk Daily Mail and Mail on Sunday newspapers.
nuclear submarine, submarine that relies on a nuclear reactor to drive its propulsion system. A nuclear submarine may or may not be armed with nuclear weapons. The chief advantages afforded by nuclear power are increased speed (allowing submerged submarines to keep up with fast surface ships) and operational radius (a nuclear submarine can patrol while submerged for weeks rather than hours). Strategic nuclear submarines formed one of the pillars of the nuclear triad that defined Cold War nuclear strategy. In 1954, with the commissioning of USS Nautilus, nuclear power became available for submarines. Since the nuclear reactor needed no oxygen