Earlier quoted context omitted.
> That's not true, they've successfully reached the Titanic several times over a dozen or so expeditions. This is more concerning, given that metal fatigue is an understood phenomenon (1). (1) https://www.faa.gov/lessons_learned/transport_airplane/accid...
It's a carbon fiber hull, for which I think we know alot less about repeated stress events...
...With titanium hemispheres at each end, so some sort of poorly understood titanium carbon-fibre interface.