https://www.dailymail.co.uk/news/art...Titan-sub.html
Quote:
'It’s acrylic – plexiglass,' Rush tells Estrada after being asked what the window mounted at the front of the Titan vessel is made of.
'It is seven inches thick and weighs about 80lbs. And when we go to the Titanic, it will squeeze in about three-quarters of an inch and just deforms,' he explains.
'And acrylic is great because before it cracks or fails, it starts to crackle so you get a huge warning if it’s going to fail.'
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This is the window that he could have got fitted and rated for 4000 meters, but cheapened out on and instead opted for the 'good enough' 1500 meter rated one. I bet this window simply got squeezed in and caused the catastrophic failure, it was the weakest element of the sub.
Still...watching the video, I can certainly see why people would want to do this trip, despite the risks. Unfortunately, the person who made this possible cut every corner possible and cheapened out anywhere he could, and thus 5 more people have joined the Titanic.