I don't think there is any glass. Both of the end caps are supposedly titanium and there are cameras.

At that point just watch a video, or drive an unmanned submersible.

I think the point is to reduce cost and speed up operations by not having a tether. You can't do wireless video under thousands of feet of salt water. The options are AI or humans. There is a podcast and a news video linked here on HN.

That's not true. There is a "large viewport", per their website:

https://oceangate.com/gallery/gallery-titan.html

before the inevitable: https://archive.is/ypr1t

> Or maybe a jackhammer to just hammer through whatever glass is there for observation purposes.

I'm now wondering if a jackhammer applies more force than the ocean at titanic depths. I suppose less uniform force at least.

why would a sub be carrying a jackhammer? that makes no sense

> Could they just have some drills with diamond-tipped bits stored inside for emergency use? If needed, drill through the whole shell, stick an arm out and unbolt from the outside.

A shaped charge might be a more sensible solution, but it's still within incredibly dangerous territory.