TOP COMMENTS FROM VIDEO BELOW
I’m a retired engineer, electrical not mechanical. You are absolutely correct about technical limits on materials such as this sub design. It’s insane this guy took the sub to it’s breaking point. It’s sad but a good lesson to future explorers. Don’t push the physical limitations of the materials and design.
I’m an oceanographer and evaluating sounds in the ocean is incredibly difficult. No one would risk potentially saving people because we thought we heard something. Additionally, and this is incredibly jaded, but this was a great training exercise for a deep sea rescue. So even if they didn’t think they were going to find them, there was merit in going through with the search.