Dr Dale Molé, a previous Navy doctor, has claimed that the final times for the crew on the submarine would've been rapid and pain-free. The Titan's tension hull was fabricated from a mix of titanium and also a composite product of carbon fibres, which he referred to as "quite new". https://leonotee.com/campaign/long-live-the-guys-5-victims-killed-in-the-oceangate-t-shirt