(CNN) -- A U.S. sailor died Sunday, after sustaining injuries in a submarine accident a day earlier ... nuclear-powered fast-attack submarine USS San Francisco ran aground about 350 miles (560 ...

the lead vessel of China’s new nuclear-powered attack submarine class reportedly sank while docked, echoing the 1969 sinking of the U.S. Navy’s USS Guitarro (SSN 665) in San Francisco Bay.