There was a video of the construction showing black carbon fiber being wound around something in a tube shape. And then metal end caps being dropped into and glued to the tube body. Im no engineer but it seemed incompatible with what you’d want to overengineer if you were building a submersible to go that deep. Why not use proven, thick, thick metal in mostly one piece with equally thick port windows as well instead? Doesn’t make sense yet at least.
when lives are in the balance, over engineering is par for the course.
but what do i know.. i’m an old, grey haired, white guy
Carbon composites were used to lower the weight so it would self-surface when the ballast was dropped.
The way the layered the carbon and bonded it to titanium that expands and contracts at a vastly different rate was beyond stupid.
The Titan Tragedy
https://youtu.be/4dka29FSZac
That doesn’t sound very inspirational (cheap)