Permit-class submarine
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The Permit-class submarine was a class of fourteen nuclear-powered fast attack submarines in service with the United States Navy from the early 1960s until 1996. They were a significant improvement on
USS Thresher (SSN-593)
USS Thresher (SSN-593)
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USS Thresher was the lead boat of her class of nuclear-powered attack submarines in the United States Navy. She was the U.S. Navy's second submarine to be named after the thresher shark.
Permit-class submarine
…The Permit-class submarine (known as the Thresher class until the lead boat USS Thresher was lost) was a class of fourteen nuclear-powered fast attack submarines (hull classification symbol SSN) in service with the United States Navy from…
USS Thresher (SSN-593) under way, 30 April 1961
Launch of USS Thresher
Search operations underway near the accident site, 15 April 1963