Investigation continues into 4 electrical blackouts on ship that caused Baltimore bridge collapse

Investigators say the electrical blackouts experienced by the container ship Dali before it left Baltimore’s port were “mechanically distinct from” those that resulted in the deadly collapse of the Francis Scott Key Bridge hours later. National Transportation Safety Board Jennifer Homendy said during congressional testimony Wednesday morning that two of the blackouts were related to routine maintenance in port while the other two resulted from the unexpected tripping of circuit breakers after the ship had left Baltimore. Her remarks come the day after the safety board released its preliminary report into the bridge collapse.