330-PSA-309-64 (USN 1105520): Wreck of USS Thresher (SSN-593).  Overhead view of Thresher's upper rudder, photographed from a deep-sea vehicle deployed from USNS Mizar (T-AGOR-11). The view shows draft markings on the rudder side and a navigation light at its top.  The original photograph bears the date October 1964. Thresher was lost on 10 April 1963.   Master caption:  Despite the tragic loss, Thresher afforded the Navy an opportunity to evaluate advanced equipment and improve techniques of deep water search and inspection.  Photographs were taken at a depth of more than 8,000 feet with an improved underwater camera-magnetometer device towed by USNS Mizar (T-AGOR-11) and operated from the surface by personnel of the U.S. Naval Research Laboratory.  Visual inspections were conducted and photographs were taken by men aboard the Navy’s remodeled bathyscaph Trieste II.  Also at NHHC as NH 97557.  (2015/11/03).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/127906254@N06">National Museum of the U.S. Navy</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/127906254@N06/22754398826/">330-PSA-309-64 (USN 1105520)</a>