The Port of Baltimore’s shipping channel is fully operational again, response officials announced Monday, more than two months after a massive cargo ship crashed into the Francis Scott Key Bridge, killing six construction workers and cutting off access to the crucial shipping artery.

The 21 crew members stuck on the ship that caused the deadly Baltimore bridge collapse are reportedly having a “tough” time after not being able to leave the vessel for 55 days.

The crew — all from India, except for one man from Sri Lanka — has been forced to stay onboard since the March 26 disaster, which brought down the Francis Scott Key Bridge and killed six construction workers.

The cargo ship that struck the Francis Scott Key Bridge in March was refloated and moved from the site of the crash early Monday morning.

Why it matters: Nearly two months after the deadly collision, moving the Dali marks a critical step towards the full reopening of Port of Baltimore.

The catastrophic bridge collapse killed six construction workers and snarled shipping and traffic in one of the U.S.' busiest ports.

As a controlled explosion rocked the Dali on Monday, nearly two dozen sailors remained on board, below deck in the massive ship's hull.

The simultaneous blasts sent pieces of Baltimore's once iconic Francis Scott Key Bridge into the dark waters of Maryland's Patapsco River, seven weeks after its collapse left six people on the bridge dead and the Dali marooned.

Authorities - and the crew - hope that the demolition will mark the beginning of the end of a long process that has left the 21 men on board trapped and cut off from the world, thousands of miles from their homes.

In the hours before a wayward cargo ship lost electrical power and knocked down Baltimore’s Francis Scott Key Bridge, killing six people, the vessel suffered two blackouts while still in port, according to a preliminary report released on Tuesday.

In a 24-page summary of findings so far, investigators with the National Transportation Safety Board said the Dali cargo vessel had experienced at least two electrical failures on the day before the accident, causing the crew to adjust the configuration of the electrical system about 10 hours before setting out.

With no work emails or phone calls it’s mostly been “scary quiet” for Theresa Abel since March 26, when a huge container vessel crashed into Baltimore’s Francis Scott Key Bridge, bringing down the span, killing six workers and clogging the main shipping channel that connected the city’s port with the rest of the world.