The passenger testified that the mission was scrapped because the sub couldn't navigate, and was swimming in circles.

Rush “crashed into the rear bulkhead, the rest of the passengers tumbled about, I ended up standing on the rear bulkhead,” ex-OceanGate scientific director said.

Another mission specialist who worked with the company that owned the Titan submersible that imploded last year while on its way to the Titanic wreckage is scheduled to testify before a U.S. Coast Gua