Concerns were raised back in 2018 about the safety of a submersible vessel that has been missing since Sunday, when it descended with tourists on a deep ocean journey to view the wreckage of the Titanic.
The pilot and four passengers are aboard and the available oxygen on the vehicle has been forecast to run out Thursday morning.
On January 18, 2018, OceanGate employee David Lochridge forwarded to the company's leaders an engineering report he had authored that was critical of OceanGate's research and development process for the Titan, according to lawsuits Lochridge and OceanGate filed against one another that year. In particular, Lochridge was concerned about the design of the hull and its ability to withstand the intense pressures of deep waters.
OceanGate did not respond to requests for comment. Lochridge, through his lawyer, said he had no comment.Will Kohnen, the chairman of the Marine Technology Society's committee on manned submersibles, addressed a letter dated 27 March 2018, to OceanGate founder and CEO Stockton Rush, who is piloting the missing vehicle. In the letter, Kohnen expressed what he said were widespread concerns about the Titan sub.
Kohnen asked the MTS board in 2018 to officially send the letter on behalf of the entire society to Stockton. The board would not do that, saying it was not within their scope as an organization, Kohnen said.
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