Federal investigators blamed experimental designs, undetected damage and construction flaws for the death of all five people aboard the submersible headed to the Titanic wreckage.

OceanGate's Titan submersible imploded on its journey to the wreck of the Titantic because of poor engineering and multiple failures to test the vessel, according to an official report.

While a rescue was not possible, the NTSB found that adherence to federal emergency guidance could have sped up recovery efforts and saved resources.