Starboard side of the USS Thresher sail with portions of the hull number '593' visible. Photographed from a deep-sea vehicle deployed from USNS Mizar (T-AGOR-11). The original photograph bears the date October 1964. Quoted text is from the caption released with that print. See Photo # NH 97544 for a view of the starboard side of the sail, with hull numbers, taken prior to Thresher's loss. Official U.S. Navy Photograph, from the collections of the Naval History and Heritage Command.