In 1955, the US launched the world's first nuclear-powered submarine. This ship was named after a sea animal with a spiral shell. What was the name of this ship?

The pioneering submarine was the USS Nautilus (SSN-571), named after the marine cephalopod. The nautilus is a fascinating "living fossil" known for its distinctive, multi-chambered spiral shell, which it uses to control its buoyancy. The name was a fitting choice for a vessel that represented a new era of underwater exploration and endurance, drawing a parallel between the natural marvel and the technological one. The name also carried historical weight in naval circles, famously being used for the submarine in Jules Verne's novel "Twenty Thousand Leagues Under the Seas."

Commissioned into the U.S. Navy in 1955, the Nautilus was a true game-changer. It housed the world's first submarine nuclear reactor, which gave it a virtually unlimited underwater range. Unlike its diesel-electric predecessors that had to surface frequently to run their engines and recharge batteries, the Nautilus could remain submerged for months at a time. This capability completely redefined naval strategy and underwater warfare during the height of the Cold War.

The Nautilus cemented its legendary status in 1958 when it completed "Operation Sunshine," the first-ever submerged transit of the geographic North Pole. This historic journey demonstrated the immense potential of nuclear propulsion. After a long and distinguished career, the USS Nautilus was decommissioned and is now preserved as a National Historic Landmark and museum ship in Groton, Connecticut, where visitors can explore this revolutionary piece of history.