[jonathanstrange]

This is not true either. As the submarine commander interviewed lays out, the testing is done by actual dives, and there is a certification body for it. Almost every other deep sea exploration submarine is certified. However, getting certified is voluntary.

Of course, certifying it just means that independent experts take a look at the design and use sensors during dives. All of these vehicles are experimental. But not even trying is negligent.

[hef19898]

It is almost like there are already deep sea subs in existence. And that people already figures out how to test, and certify, them.

[zirgs]

I suspect that certification is not going to be voluntary any more after this.