Skeptic: "It wasn't always so..."
[Depth keeping] was made worse by the estimated maximum diving depth of 200' / 60 m being much less than their 339' / 103 m length. Even a 10° angle would cause a 59' / 18 m difference in depth of the bow and stern, and 30° would produce 170' / 50 m which meant that while the stern would almost be on the surface, the bow would almost be at its maximum safe depth. The problems were made even more dangerous because the eight internal bulkheads were designed and tested during development to stand a pressure equivalent to only 70' / 20 m.
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