New details have surfaced in the Titan submersible tragedy.

Two years after the OceanGate Expedition vessel imploded with five passengers onboard , including its CEO Stockton Rush , the United States Coast Guard found the deep-sea exploration company was to blame for the "preventable tragedy," according to the report of investigation obtained by E! News.

"The board determined the primary contributing factors were OceanGate's inadequate design, certification, maintenance and inspection process for the Titan," an Aug. 5 USCG press release announcing the report said. "Other factors cited in the report include a toxic workplace culture at OceanGate [and] an inadequate domestic and international regulatory framework for submersible operations and vessels of novel design."

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