A new window of opportunity has been set in the major undertaking of moving the William A. Irvin from its slip in the Duluth Harbor.

According to City leaders, crews will attempt to move the ship out of the Minnesota Slip to Fraser Shipyard, in Superior, sometime between seven Friday night and six Saturday morning.

It will be a “dead ship tow,” meaning the Irvin will be guided by barges very slowly over to Fraser shipyard.

It could easily take up to four hours to complete, barring any complications.

No marine traffic will be allowed in the Harbor at the time, and the Aerial Lift Bridge will not lift for any vessel.

Moving the ship to the tune of $850,000 will allow the 610 foot laker to get some much needed restoration.

It will also allow for the MPCA to clean up the Minnesota Slip after decades of industrial pollution.