I had the pleasure of meeting CAPT Ned Beach once. We had touched briefly on the subject of THRESHER and he was irritated by the way the Navy had renamed the class.
He thought it to be a slap at those on eternal patrol THRESHER and a way of 'erasing' history.
Ever read "The THRESHER Disaster"? Her Reactor Control Officer, LCDR McCoole (then a LT) was pretty outspoken on the shabby work done on her at Portsmouth. McCoole was a Mustang, an IC man that was an ITC(SS) aboard NAUTILUS than was commissioned.
He was critical of the workmanship in THRESHER to the brass right after her accident, as a result his career was shot to hell.
Yes, I remember very well all of the heat the yardbirds took over the Thresher and the subsequent "investigations" that took place and all of the finger-pointing because of the "poor workmanship."