They seem to have totally recreated the hull using a different manufacturing method in late 2020/early 2021: https://www.wired.com/story/titan-submersible-disas

They seem to have totally recreated the hull using a different manufacturing method in late 2020/early 2021: https://www.wired.com/story/titan-submersible-disaster-inside-story-oceangate-files/ https://www.wired.com/story/titan-submersible-disaster-insid... They seem to have run fewer tests on the new hull, though. From the outside, it looks like one of the lessons they learned from earlier tests was that tests can create bad news, so if you're optimizing for the best reports back to investors you should stop running tests.