OceanGate volunteer said nobody was concerned until sub ‘was really overdue’ from dive - The testimony is part of the days-long hearings as authorities investigate the Titan sub disaster that captivat

The scientific director for OceanGate testified that the Titan sub malfunctioned only days before the deadly dive.

A witness got emotional recounting the day of the doomed Titan submersible dive while testifying during the U.S. Coast Guard's hearing into the deadly implosion.