Nuclear submarine nuclear-powered submarine was first proposed in the United States Navy by the Naval Research Laboratory's Ross Gunn in 1939. Construction of the world's first nuclear powered submarine was made possible by the successful development of a nuclear propulsion plant by a group of scientists and engineers at the Naval Reactors Branch of the Bureau of Ships and the Atomic Energy Commission. In July 1951 the U.S. Congress authorized construction of the first nuclear-powered submarine, "Nautilus", under the leadership of Captain Hyman G. Rickover, USN (sharing names with Captain Nemo's fictional submarine in Jules Verne's "Twenty Thousand Leagues Under the Sea",
Jules Verne ATV space station at a distance of , despite a minor anomaly with the electronic systems controlling the spacecraft's engines. "Jules Verne" started its approach to the ISS at 14:19 UTC. At 15:57, it reached the S hold point and waited there for 90 minutes to conduct tests. The ISS crew then commanded the ATV to conduct hold and retreat manoeuvres. At 17:30, the ATV was commanded to perform an escape manoeuvre, propelling it away from the station. During Demo-Day 2, "Jules Verne" closed in to within of the International Space Station, after which the ISS crew simulated an abort. All