The Tragic Fate of the Titan Submersible.
The Titan submersible, which went missing on Sunday, suffered a catastrophic implosion that likely killed its pilot and four passengers instantly amid the intense water pressure in the deep North Atlantic. The craft's larger internal volume meant it was subjected to more external pressure, and any defect could result in a "near instantaneous implosion" in less than 40 milliseconds. The USS Thresher, a nuclear-powered submarine, suffered a similar disaster in 1963, killing 129 sailors and civilians on a routine test dive off Cape Cod.