Quote:
Originally Posted by Red Devil
Gato Balao and Porpoise could do 300, and a bit. Tench 400 as I recall.
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The listed test depth and what they actually "could do" are not the same. American boats were expected to do 1-1/2 times the test depth, and sometimes did more. The
Balao class was listed as having a test depth of 400 feet. USS
Pampanito went below 600 feet on her first patrol.