The two US submarines lost after their hulls were crushed were the USS Thresher and the USS Scorpion. They are SSN-593 and SSN-589, respectively.
52 US submarines were lost in WW2. This was about 1 in every 5 submarines that the US had in WW2
The British lost 76 submarines during WWII.
52 subs were sunk (lost).
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Of the 52 US Navy Submarines lost during WW2, fifty were lost in the Pacific and only two were lost in the Atlantic Oceans (both by accidents). The two Atlantic US Submarines lost were the USS Dorado and USS R-12. The Submarine DORADO was sunk by friendly fire (US Aircraft) and the Submarine R-12 was sunk during a diving accident.
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2,439 ships
2,439 ships
52 u.s. subs were sank
All submarines have a rated "Crush Depth", the depth at which the hull will succumb to external sea pressure. While the actual depths for each class are classified, several submarines were lost during the Cold War to implosion events after major casualties. The most noted for the United States was the USS Thresher (SSN-593) which was lost during sea trials after she suffered a major flooding casualty. It was estimated she made it to within 100' of the surface before sinking to her crush depth and the bottom of the ocean.
52 US subs were lost in WWII.