America’s national security relies in part on the U.S. Navy’s nuclear-powered submarines, which can operate more than 800 feet below the ocean’s surface. At such dark, unforgiving depths, the crew’s survival depends on the ability of the sub’s steel hull—and its welded joints—to withstand immense water pressures that can exceed 50,000 pounds per square foot.
Neutrons dive deep to help protect US nuclear submarines
