Created to find and destroy Soviet submarines, Thresher was the fastest and quietest submarine of its … See more

The contract to build Thresher was awarded to Portsmouth Naval Shipyard on 15 January 1958, and her keel was laid on 28 May 1958. She was launched bow first on 9 July 1960, was sponsored by Mary B. Warder (wif… See more

On 9 April 1963, Thresher, commanded by Lieutenant Commander John Wesley Harvey, left from Kittery, Maine, at 8:00 a.m. and met with the submarine rescue ship Skylark at 11:00 a.m. to begin her initial post-overh… See more

The Navy quickly mounted an extensive search with surface ships and support from the Naval Research Laboratory (NRL), with its deep-search capability. The laboratory's small acoustic research vessel Rockville, with a uniq… See more

Deep-sea photography, recovered artifacts, and an evaluation of Thresher's design and operational history permitted a court of inquiry to conclude that the submarine had probably suffered the failure of a salt-water piping syst… See more