The Coast Guard announced today it will investigate what caused the Spirit of Boston to catch on fire as it was docked at Commonwealth Pier Friday night.
The "marine casualty investigation" will "allow for a full understanding of the events that led up to the fire and provide a way forward to prevent future events," the Coast Guard says.
The 153-foot-long Spirit of Boston can hold a maximum of 675 passengers and crew. Nobody was on board when the fire broke out below decks around 11 p.m. on Friday.