Until the Titan disaster on June 18, no one had ever died while piloting or riding a submersible into the deep sea’s unending darkness. This remarkable safety record stood for nearly a century, despite many thousands of dives by explorers . Given that, how did Titan manage to put a sudden end to the lives of its five passengers? Engineers interviewed by The New York Times saw clues to Titan’s failure in several cost-saving departures from proven submersible designs. #titansubmersible