The Canadian Transportation Safety Board's final investigation into the Titan submersible's deadly failure reveals severe oversights at nearly every turn. Andrew Chang breaks down the board's expansive look into a string of risky engineering and fatal design flaws that it believes directly contributed to its catastrophic implosion.

Thumbnail credit: Courtesy of NOAA/Institute for Exploration/University of Rhode Island (NOAA/IFE/URI), OceanGate (Photo credits: OceanGate, The Canadian Press, Reuters, Adobe Stock and Getty Images)