Federal officials are investigating whether electrical problems caused the 984-foot-long container ship Dali to lose power and crash into Baltimore’s Key Bridge at 1:30 a.m. on March 26, sending it falling into the Patapsco River and closing the harbor. The crash killed six construction workers filling pot holes on the bridge. Meanwhile, FBI agents were on the ship last week, interviewing some of the 21 crew members, investigating whether any federal laws were broken. The City of Baltimore filed a suit against almost everyone involved, and the Dali’s owner and operator filed their own suit trying to limit their damage.…