1. January 19 The first nuclear-powered submarine, the USS Nautilus, is launched in Groton.

2. How can such a huge creature plow through the ocean at speeds rivaling a nuclear-powered submarine?

3. The first stage from 1955 to 19 the success has developed the atomic bomb, the hydrogen bomb and the nuclear-powered submarine, has established a set of quite complete nuclear industry system.

4. 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.