How American Machinists Work 1,000 Feet Beneath the Ocean

What happens when a critical pump shaft wears down 300 meters beneath the Pacific, with no spare in storage and no way to surface? Inside every American nuclear submarine there is a workshop smaller than a garage, staffed by 1 or 2 machinists responsible for keeping more than 100 people alive. They reverse engineer broken parts by hand and must even know when the sound of a lathe could give away the position of the entire boat. This video traces their story from USS Holland in 1900 to today's nuclear fleet. Sources consulted and referenced in our research: Wikipedia - Machinist's Mate (U.S. Navy rating history): https://en.wikipedia.org/wiki/Machini... Wikipedia - Machinery Repairman (established 1948): https://en.wikipedia.org/wiki/Machine... Wikipedia - USS Holland (SS-1), the Navy's first submarine: https://en.wikipedia.org/wiki/USS_Hol...) Wikipedia - Naval Submarine Base New London: https://en.wikipedia.org/wiki/Naval_S... Wikipedia - USS Nautilus (SSN-571), "Underway on nuclear power": https://en.wikipedia.org/wiki/USS_Nau...) Wikipedia - USS Thresher (SSN-593) loss, 1963: https://en.wikipedia.org/wiki/USS_Thr...) Wikipedia - SUBSAFE quality assurance program: https://en.wikipedia.org/wiki/SUBSAFE Wikipedia - USS San Francisco (SSN-711) 2005 collision: https://en.wikipedia.org/wiki/USS_San...) Wikipedia - USS New Hampshire (SSN-778), first submarine 3D printer installation: https://en.wikipedia.org/wiki/USS_New...) Naval History and Heritage Command - U.S. submarine force in World War II: https://www.history.navy.mil NAVSEA - Submarine Safety (SUBSAFE) program overview: https://www.navsea.navy.mil COPYRIGHT & FAIR USE NOTICE Some images, footage, and archival materials in this video are used for commentary, education, research, and historical documentation under Fair Use principles. We respect all copyright holders. If you own any material featured in this video and have concerns regarding its use or attribution, please contact us directly before filing a copyright claim or takedown request. We will be happy to review the matter and resolve it appropriately.