What was the name of the first nuclear submarine?

The first nuclear submarine was named USS Nautilus. Launched on January 21, 1954, the USS Nautilus was a groundbreaking vessel for the U.S. Navy and for naval engineering as a whole. It was the first submarine to be powered by a nuclear reactor, which allowed it to operate submerged for extended periods without needing to surface for air, a significant advancement over traditional diesel-electric submarines. The Nautilus made history by completing the first submerged transit of the North Pole, showcasing its capabilities and the potential of nuclear propulsion in naval warfare. This set a precedent for future submarine designs, leading to the development of more advanced nuclear submarines in the following decades.

The other vessels mentioned were significant in their own right but were not the first nuclear submarines. Each of them represents different advancements or classes within the Navy, but USS Nautilus remains the historic first that marked the dawn of the nuclear age in naval operations.