The National Transportation Safety Board says faulty engineering led to the implosion of an experimental submersible that killed five people en route to the wreck of the Titanic. The NTSB made the statement Wednesday in its final report on the hull failure and implosion of the Titan submersible in June 2023. Everyone on board the submersible died instantly in the North Atlantic when Titan suffered a catastrophic implosion as it descended to the wreck. The NTSB report says the faulty engineering of the Titan did not meet necessary strength and durability requirements. The implosion led to lawsuits and calls for tighter regulation of private deep sea expeditions.