Well, just from a general design perspective the vehicle’s design for sure got reviewed by some authorities before they were allowed to put it into service. Second, if this thing has been designed for a certain use case at a certain depth, than there’s most probably a solid safety design margin included. Means - this thing can for sure land on the seabed without taking harm. Additionally I just like to put the video in perspective:
The train wagon has been designed for a certain pressure direction (inside>ambient). A submarine is build for the opposite (inside<<ocean). That doesn’t mean, that it can’t implode. It’s just not surprising, that the wagon implodes at 1bar pressure difference.
Well, just from a general design perspective the vehicle’s design for sure got reviewed by some authorities before they were allowed to put it into service. Second, if this thing has been designed for a certain use case at a certain depth, than there’s most probably a solid safety design margin included. Means - this thing can for sure land on the seabed without taking harm. Additionally I just like to put the video in perspective: The train wagon has been designed for a certain pressure direction (inside>ambient). A submarine is build for the opposite (inside<<ocean). That doesn’t mean, that it can’t implode. It’s just not surprising, that the wagon implodes at 1bar pressure difference.