https://www.wired.com/2013/01/secret-sub-design/

SAM LAGRONESECURITY01.17.2013 06:30 AM

Secret Nuclear Redesign Will Keep U.S. Subs Running Silently for 50 Years

The U.S. Navy is betting the future of its submarine force on a secret and revolutionary nuclear drive system that aspires to be more efficient and quieter than anything under the water today.