The concept of using nuclear power as a propulsion power source for submarine diving was first mentioned in his report by the submarine physicist Philip Abelson of the Second World War, who began promoting the role of the submarine as a missile launcher, thus promoting the submarine from a tactical assault ship to a strategic weapons carrier. Abelson's concept was carried out by the US Navy's Navy's commander-in-chief Man Father Nuclear (Fathtric Nuclear Nuclear Navy 21). The submarine was also supported by the US Navy's commander-in-chief Man Boomer Boomer (Hyman G. Rickover) and prompted the United States Department to use a submarine only as a submarine in the U.S