Who invented the nuclear powered submarine?

Admiral Hyman G. Rickover, considered to be the "Father of the Nuclear Navy", realized the potential of nuclear energy for the Navy, and personally oversaw the design, development, construction and deployment of the USS Nautilus (SSN-571), the Navy's and the world's first nuclear powered submarine.

Rickover's leadership methods and political savvy are legendary, and all of us who served under him while on active duty learned something from that leadership. Some of my favorite quotes are of Rickover's (on my bio page at the bottom).

His absolute zero tolerance for mistakes in the nuclear community in the Navy continues to this day, and is the reason the Navy enjoys a spotless record of over 55 years of reactor operation.