What You Need to Know: In April 1963, the USS Thresher (SSN-593), a state-of-the-art nuclear-powered submarine, tragically sank during deep-sea trials off the coast of Massachusetts, killing all ...

Still, two were lost to accidents. The first was the USS Thresher (SSN-593), the lead boat of a class of nuclear-powered attack submarines developed in the late 1950s. She sank during deep tests ...

Cmdr. John “Wes” Harvey, on April 23. Wes was the commanding officer of USS Thresher (SSN 593) when the submarine was lost at sea, on April 10, 1963, during sea trials. All persons aboard ...

Sailors assigned to Pre-Commissioning Unit (PCU) John F. Kennedy (CVN 79) joined NNS-HII shipbuilding partners in a moment of ...

Cmdr. John Harvey, commanding officer of USS Thresher (SSN 593) before its tragic loss, were passed on to Lt.j.g. Thomas M. Grubish at the Submarine Birthday Ball on April 13. The dolphins are ...