Quote:
Originally Posted by Igottago
I think I read the vessel made 20 previous successful dives to the site? (could be wrong but I think I did read that).
So if it had a bit of a track record, it may have weighed into their thought process, even though the engineering was experimental.
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I'm not sure I'd be comfortable without knowing what the tested crush depth was, and how many repeat trips to the same depth before fatigue crushed it. These are vitally important facts that can't be guessed at. It says it is rated to 4000m, Titanic is at about 3000m, but if it's actual crush depth was 3200m, then that isn't nearly enough safety range to consider safe.
Of course, this means building multiple subs exactly the same way, and understanding the failure mechanisms.