All this info makes me wonder why intact artifacts were retrieved from the Titanic. Why didn’t the weight of the water crush everything, including the ship? There were shoes and dishes and chandeliers and many other items that were in their original form. Enquiring minds want to know.
That ship slowly sunk. The rapid implosion is what caused the problem. That wasn’t there on a slowly sinking ship.
Items that are not crushed are things that have no air pockets or hollow areas that allow for differences in pressure.
If an object has equal pressure inside and out, then it will not be bothered by the massive pressure.........................