eli5: when a submarine exceeds its crush depth, and it’s crew is killed, what actually happens to them? Do they die instantly or are they squished flat? What happens ?
In: 293
They die pretty much instantly from being squished flat.
Exceeding crush depth means the structure of the submarine is no longer strong enough to hold out against the pressure of all the water around it, and well… [this happens](https://www.youtube.com/watch?v=Zz95_VvTxZM).
[Delta-P ain’t nothin’ to fuck with.](https://physicsfootnotes.com/footnotes/delta-p/)
EDIT: Note – the linked video is only 1 atmosphere of pressure difference. [Imagine what happens at 7 atmospheres (200 feet down)!](https://www.calctool.org/fluid-mechanics/hydrostatic-pressure)
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