This vlogger has relevant background, and has dug up some interesting info. This makes all the alarm bells go off to any experienced submariner.

https://www.youtube.com/watch?v=4dka29FSZac


CEO: "I hire brand new engineering grads. Not experienced ex-Navy submariners, like all other civilian submarine businesses. I don't want a bunch of 50 year old white guys around, they're not inspirational and waste too much money on safety"

If I had heard that quote a couple years ago, I could have told you exactly how this was going to play out. In aviation we use about an 8psi differential pressure in our hulls and we still manage catastrophic failures occasionally. At Titanic depths they are dealing with nearly 6,000 psi, all of which has to be kept out of the people tank.

Elon Musk hires very experienced people from industry, including ex-nasa astronauts. He managed to dispense with red tape while still retaining the people who actually know what they're doing.