How fast did the people in it die?
Of course once the sub filled with water they would die instantly because it would reach insane pressures (300-400 ATM or 5800 PSI)
1 point
https://www.youtube.com/watch?v=Zz95_VvTxZM
You see the way this tank imploded?
What if the titan was the same implosion, albeit stronger/faster, but the way the edges/ends of the cylinder didnt really collapse, only the middle? What if you were sitting on the end parts?