No time to drown, when the pressure vessel failed they basically found themselves in a hydraulic press. The entire thing would have imploded as the pressure ins

No time to drown, when the pressure vessel failed they basically found themselves in a hydraulic press. The entire thing would have imploded as the pressure inside the vessel went from 1 to 400atm. Instantly too, as carbon fibre is brittle, this would not have been a progressive process.