[Milsurplus] OT: Loss of USS Thresher, SSN-593 - One-Half Century Today

[Joe Connor]

Here's a very touching ballad performed by the Kingston Trio in memory of the USS Thresher. It's well worth listening to.

http://www.youtube.com/watch?v=w41nF5yrexY


Joe Connor



>________________________________
> From: Mike Morrow <kk5f at earthlink.net>
>To: milsurplus at mailman.qth.net 
>Sent: Wednesday, April 10, 2013 5:43 PM
>Subject: [Milsurplus] OT:  Loss of USS Thresher, SSN-593 - One-Half Century Today
> 
>
>Today it has been 50 years since the USS Thresher sank during
>deep dive testing for sea trials after completing its 1962-1963
>post-shakedown availability at Portsmouth (NH) Naval Shipyard
>(PNSY).  http://en.wikipedia.org/wiki/USS_Thresher_(SSN-593) 
>
>Nuclear submarine designs were significantly altered afterwards,
>but existing boats like mine had none of those modifications until
>almost 15 years later.  Many never got the full SUBSAFE package
>although they remained in service carrying Trident I UGM-96 (C4)
>SLBMs until decommissioning in the early and middle 1990s.
>
>One simple thing learned from the loss of Thresher was to not
>conduct initial deep dive testing in water deeper than submarine
>crush depth.  Unfortunately, from PNSY, water deep enough to do
>that testing but not deeper than crush depth takes several days
>of transit time to reach.  The other important result was the
>development of a fast scram recovery procedure for rapid reactor
>restart.  Sometimes the obvious just isn't.
>
>Mike / KK5F
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