[N19PEDL2]

I read about the huge lack of safety measures on the submarine, and now this. I am beginning to think that perhaps the CEO of the company has voluntarily decided to die with his unfortunate fellow passengers. I know mine is big speculation, but taking the glass viewport to 300% of its certified maximum strength in an environment where the slightest setback can be fatal can no longer even be considered as "taking risks."

[nly]

Depends what certification entails. The company that certifies the ports might only have a sub that can go to 1300meters

Doesn't mean that the design isn't mathematically sound to far deeper.