
By now, most people know a massive container ship, named The Dali, struck a pier or support of the Francis Scott Key Bridge in Baltimore, plunging eight road workers into the water. At this time, rescue efforts have failed to find six of these workers, and the authorities now presume assume they have died, either in the accident or in the cold water shortly after.
Most news reports to date have emphasized the absence of information, saying authorities do not know what caused the disaster. We do not know exactly what caused The Dali to lose power at the worst possible time, but we do have a general sense of the sequence of events. The ship quite clearly suffered a major failure in the engine room. The crew dropped the anchor, which did not stop the ship. When the crew or pilots saw their vessel drifting into the bridge, they sent out a Mayday, which allowed the port authorities to stop traffic on the bridge; this certainly saved lives.