According to Norman Friedman's US submarines through 1945, they conducted tests of rivetted hulls versus welded hulls with respect to their resistance against depth charges and found the latter superior. It always amazed me though, that as far as I know, no tests on actual crush depth were carried out. With the number of submarines being scrapped after the war, I find this incredible. Surely one submarine could have been tested to destruction in the post war years?
Does anyone know if they did in fact test this?
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