From the article:
When a submarine hull collapses, it moves inward at about 1,500mph (2,414km/h) - that’s 2,200ft (671m) per second, says Dave Corley, a former US nuclear submarine officer.
The time required for complete collapse is about one millisecond, or one thousandth of a second.
A human brain responds instinctually to a stimulus at about 25 milliseconds, Mr Corley says. Human rational response - from sensing to acting - is believed to be at best 150 milliseconds.
The air inside a sub has a fairly high concentration of hydrocarbon vapours.
When the hull collapses, the air auto-ignites and an explosion follows the initial rapid implosion, Mr Corley says.
Human bodies incinerate and are turned to ash and dust instantly.
@PlutoniumAcid So you’re thinking they heard some type of creaking or crunching of the carbon fiber hull then splat?
@Guadin
There have been credible reports that they had initiated an emergency ascent, though I am not sure if this is a certainty. If it’s true, they were definitely aware that they were in serious danger long enough to make and enact that decision.