Witness reveals concerns that the submersible’s hull may have cracked during a previous expedition - A third witness is ...

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

Patrick Lahey, co-founder of an OceanGate competitor, tells a US Coast Guard hearing about his concerns over the Titan sub.

Last year, five people hoping to view the Titanic wreckage died when their submersible imploded in the Atlantic Ocean ...