According to the NTSB investigation, on March 25, the cargo ship Dali was hit with two blackouts during maintenance before ramming into the Baltimore Bridge.

A preliminary assessment from the National Transportation Safety Board (NTSB) was issued on Tuesday. It states that the shipping vessel that collided with the Francis Scott Key Bridge in March had two power failures while parked, ten hours before the incident that caused part of a bridge span to collapse.

In this aerial view, a...