It imploded with so much force, 20 million pounds of pressure crashing against itself that it then exploded. If the sub was solid steel instead of carbon fiber composite, perhaps it wouldn’t have reacted quite this dramatically. An expert on TV said the weight of water at 13 miles deep applied to it was as much as weight of the Empire State building.

Here, they say:
“The deep-sea water pressure that appears to have crushed the 22-foot craft would have been roughly equivalent in weight to the 10,000-ton, wrought-iron Eiffel Tower….”

That’s 20 million pounds of pressure!

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What is an implosion, and what would it have been like for the Titanic sub-passengers?