The crew had about 41 hours of oxygen remaining as of midday Tuesday
Authorities reported the carbon-fiber vessel overdue Sunday night, setting off the search in waters about 435 miles south of St. John’s. At the helm was pilot Stockton Rush, the CEO of the company leading the expedition. His passengers were British adventurer Hamish Harding, two members of a Pakistani business family and a Titanic expert.
The submersible had seven backup systems to return to the surface, including sandbags and lead pipes that drop off and an inflatable balloon. One system is designed to work even if everyone aboard is unconscious, Pogue said. “What I would like to believe … is that Titan suffered from a power loss, but they could still go back to the surface” and be spotted by aircraft and ships, he said.Alistair Greig, a professor of marine engineering at University College London, said submersibles typically have a drop weight, which is “a mass they can release in the case of an emergency to bring them up to the surface.”
Rush told The Associated Press in June 2021 that the Titan’s technology was “very cutting edge” and was developed with the help of NASA and aerospace manufacturers.Article content Greg Stone, a longtime ocean scientist based in California and a friend of Rush, called the lost submersible “a fundamentally new submarine design” that showed great promise for future research. Unlike its predecessors, the Titan was not spherical and instead relied on a cylindrical shape that tapers at one end.
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