From the start, the plan had been to push boundaries — to go where no one had gone before, as Richard Stockton Rush III liked to say. One partner was experienced in start-ups and passionate about “making humanity a multiplanet species.” The other, Mr. Rush, was an aerospace engineer and investor with a family fortune. Rush founded OceanGate Expeditions, the company whose submersible is presumed to have imploded during an expedition to the Titanic, killing Mr. The founders’ goal for OceanGate, Mr. Sohnlein said, was to make deep-sea voyaging as accessible to wealthy tourists and researchers as entrepreneurs like Elon Musk had made space travel.

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Persons: Richard Stockton Rush III, Rush, ” Guillermo Sohnlein, ’, Sohnlein, Elon Musk, ”, “ Organizations: OceanGate Expeditions, OceanGate, Elon, SpaceX