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)
4 points
If you compress a gas enough it will get hot enough to ignite. Google “fire pistons”.
4 points
It’s also why airplane tires are filled with nitrogen instead of air. On landing, the high pressure and heat can cause the oxygen in air to combust.
1 point
