This page is created to share stories, thoughts, and photos about the 593/594 class of U.S. fast attack submarines. Discussion on other topics is fine, but the main focus is intended to be on 594s. Requirements for membership are a) Qualified in submarines, and …

Oct 13, 2022 · A career submariner, Merz qualified aboard USS Haddo (SSN 604) in San Diego and upon retirement was the last remaining “594 Tough” Permit-class submariner (formerly Thresher class). Following...

Apr 9, 2023 · To this day there is a special bond among Thresher Class veterans, who consider themselves to eternally be “594 Tough” – noting that while the ship Class was “officially” renamed “Permit Class” after USS Permit (SSN 594) following the loss of , it always remained “Thresher Class” to her veterans.

Other "594 Tough" Submarine Photos USS Thresher SSN-593 Lost with all hands on April 10, 1963 while on sea trials after repairs. This loss started the "SUBSAFE" and DSRV programs. USS Permit SSN-594 USS Pollack SSN-603 USS Haddo SSN-604 USS Jack SSN-605 USS Tinosa SSN-606 USS Dace SSN-607 USS Guardfish SSN-612 USS Flasher SSN-613 USS Greenling ...

Jan 23, 2023 · A career submariner, he was the last “594 Tough” submariner on active duty, having qualified as a junior officer in USS Haddo (SSN 604). He served as Engineer Officer in USS Boise (SSN 764) and commanded both research submarine NR-1 …

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Feb 8, 2022 · A career submarine officer, Merz earned his dolphins aboard USS Haddo (SSN 604) in San Diego and is among the few remaining “594 Tough” Permit-class submariners (formerly the Thresher class).

This page is created to share stories, thoughts, and photos about the 593/594 class of U.S. fast attack submarines. Discussion on other topics is fine, but the main focus is intended to be on 594s.