48,000 Tons Underwater: The World's Largest Submarine. How Nuclear Submarines Are Built

Why would the U.S. Navy cut a nuclear submarine into three pieces instead of scrapping it? Follow the extraordinary life of giant submarines—from molten steel, pressure-hull welding, modular construction, and floating dry-dock launches to massive overhauls, retirement, and recycling. See why one submarine overhaul can require 437,000 workdays, how entire sections travel between shipyards, and how USS La Jolla and USS San Francisco became stationary training ships. Explore Virginia-class and Columbia-class construction, Russia's enormous Typhoon class, and the 62-year service story of USS Daniel Webster. Discover the massive machines, skilled workers, and extreme engineering behind building, repairing, modernizing, and retiring nuclear submarines in America's naval shipyards. TIMELINE: 0:34 — Why the Navy Cuts Nuclear Submarines Apart 3:12 — Giant Russian Submarines and Their Tiny Tugboats 4:54 — From Molten Steel to Crushproof Submarine Hulls 7:26 — Precision Machining and Welding Giant Submarine Components 9:34 — Building Modern Nuclear Submarines From Giant Modules 11:43 — Launching Submarines Using Massive Floating Dry Docks 14:33 — Inside the Navy's Complex Submarine Overhaul Process 17:19 — Retirement, Training Ships, and Nuclear Submarine Recycling 19:56 — America's Nuclear Submarine Shortage and Future Choices HASHTAGS: #NuclearSubmarine #USNavy #SubmarineConstruction #Shipbuilding #ExtremeEngineering #NavalEngineering #SubmarineManufacturing #MilitaryTechnology #SubmarineDocumentary #VirginiaClassSubmarine --------------------------------- ⚠️ Copyright Disclaimers • We use images and content by the YouTube Fair Use copyright guidelines • Section 107 of the U.S. Copyright Act states: “Notwithstanding the provisions of sections 106 and 106A, the fair use of a copyrighted work, including such use by reproduction in copies or phonorecords or by any other means specified by that section, for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright.” • This video could contain certain copyrighted video clips, pictures, or photographs that were not specifically authorized to be used by the copyright holder(s), but which we believe in good faith are protected by federal law and the fair use doctrine for one or more of the reasons noted above.