Lead: In April 1963, USS Thresher, a nuclear attack submarine engaged in trials after an extensive overhaul, sank in the Atlantic off Cape Cod with the loss of 129 lives.

Intro.: A Moment in Time with Dan Roberts.

Content: Thresher was a new class of sub designed to hunt and destroy Soviet nuclear submarines. Therefore, it was able to go deeper and faster than any of its predecessors and carry 23 torpedoes at 28 knots per hour down to a test or maximum depth of 1300 feet below the surface. It was a deadly package but this vessel had catastrophic defects.