Contrary to public reports last year, the passengers probably had no idea that the vessel was about to implode.

Two weeks of public testimony concluded Friday in the U.S. Coast Guard's investigation to establish what caused the Titan submersible to implode during a deep ocean dive last year.

The United States Coast Guard’s investigation into the Titan submersible disaster has now concluded two weeks of public testimony, revealing new information about the company, the vessel, and its final moments.