Nuclear Power
The world's first operational nuclear-powered submarine "USS Nautilus"
U.S.
USS Nautilus (SSN-571) was the world's first operational nuclear-powered submarine and the first submarine to complete a submerged transit of the North Pole. Her initial commanding officer was Eugene Parks "Dennis" Wilkinson, a widely respected naval officer who set the stage for many of the protocols of today's Nuclear Navy, and who had a storied career during military service and afterward.