Oct. 16 (UPI) -- Federal investigators released their final report on the Titan submersible implosion, saying faulty engineering and undetected damage caused the accident that killed five people at the bottom of the north Atlantic Ocean.

The National Transportation Safety Board said on Wednesday that parent company OceanGate didn't adequately test the Titan, so the company wasn't aware of the vessel's actual strength and durability, which was much lower than its target.

The Titan imploded on June 18, 2023, killing five people. They were OceanGate founder and CEO Stockton Rush; British billionaire Hamish Harding; French maritime expert Paul-Henri Nargeolet; Pakistani businessman Shahzada Dawood and his 19-year-old son, Suleman Dawood.

The report said earlier dives had caused damage to the hull, including delamination, that was undetected by OceanGate. Also, the company's real-time monitoring data was flawed, so the company was unaware that the Titan should have been removed from service after dive 80. The final dive was No. 88.

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