A former OceanGate scientific director said the Titan submersible suffered a malfunction six days before imploding in June 2023, killing all five people on board.Steven Ross, a<a class="excerpt-read-m

Earlier this month, the Coast Guard opened a public hearing that is part of a high-level investigation into the cause of the implosion. The public hearing began Sept. 16 and some of the testimony has focused on problems the Washington state company had prior to the fatal 2023 dive.

The investigatory panel has listened to three days of testimony that raised questions about the company's operations before the doomed mission.