“At 4,000 meters there will be two tons of pressure pressing on each square inch of the carbon fiber hull.
Most likely the little vessel was crushed like a ping-pong ball run over by a Mac truck.
Engineering arrogance may have cost five human lives in this Quest to visit The Titanic.”
The hull was designed to withstand 2 1/2 times that pressure.
Why does the article mention that 1500 meters test in conjunction with the actual 4,000 meters dive?
Was the hull registered and formally tested for a 12,000+ foot dive?
Where and when?
2 1/2 times doesn’t seem to me to be safe enough for what they were trying to do. I’m not a material scientist, but I would want a greater parameter for something that is certain death if it fails. At least 5 times the margin.