Last year, five people hoping to view the Titanic wreckage died when their submersible imploded in the Atlantic Ocean.
The passenger testified that the mission was scrapped because the sub couldn't navigate, and was swimming in circles.
Witness reveals concerns that the submersible’s hull may have cracked during a previous expedition - A third witness is ...
Patrick Lahey, co-founder of an OceanGate competitor, tells a US Coast Guard hearing about his concerns over the Titan sub.