An Ohio real-estate investor is planning to take a two-person submersible down to Titanic-level depths to prove that the journey can be carried out safely following the Titan sub implosion last year.

He is working with Patrick Lahey, the cofounder and CEO of submersible manufacturer Triton Submarines.

The pair aims to show that such an expedition can be carried out repeatedly and safely despite the implosion of the OceanGate sub last June, which killed all five people on board, including the company's CEO, Stockton Rush.

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