tl;dr:

Warnings over the safety of OceanGate’s Titan submersible were repeatedly dismissed by the CEO of the company, email exchanges with a leading deep sea exploration specialist show. In messages seen by the BBC, Rob McCallum told OceanGate CEO Stockton Rush that he was potentially putting his clients at risk and urged him to stop using the sub until it had been classified by an independent body. Mr McCallum told the BBC that he repeatedly urged the company to seek certification for the Titan before using it for commercial tours. Mr Rush founded OceanGate in 2009 and the company offered customers a chance to experience deep sea travel, including to the wreck of the Titanic, on board Titan for a price of $250,000. Experts have questioned the safety of Titan and how private sector deep-sea expeditions are regulated.

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