Assuming the silver braze joints played a role of course: https://en.wikipedia.org/wiki/USS_Thresher_(SSN-593)#Alternative_theory_of_the_sinking:_electrical_fa

Assuming the silver braze joints played a role of course: https://en.wikipedia.org/wiki/USS_Thresher_(SSN-593)#Alternative_theory_of_the_sinking:_electrical_failure https://en.wikipedia.org/wiki/USS_Thresher_(SSN-593)#Alterna... Pretty legit theory considering the mysterious lack of evidence of very loud leaking onboard. PS - Technically it doesn't matter which version of the story is true. The safety improvements that resulted from the accident would have been the same in both cases (since the reactor was still scram-ed, with possible steam restriction, and ballast tanks still faulty).