Hyman George Rickover (January 27, 1900 – July 8, 1986) was a United States Navy admiral who directed the original development of naval nuclear propulsion and controlled its operations for three decades as director of Naval Reactors. This earned him the nickname "Father of the Nuclear Navy". In addition, he oversaw the development of the Shippingport Atomic Power Station, the world's first commercial pressurized water reactor used for generating electricity.