She was built to a design from the United States Maritime Commission by the Great Lakes Engineering Works in River Rouge, Michigan.

The George A. Sloan was sold in 2001 to Lower Lakes Towing Ltd., Ontario, Canada, and renamed Mississagi.

[5] She was laid-up in 2000, and sold to Port Dover, Ontario, firm Lower Lakes Towing Limited, which renamed her Mississagi for the start of the 2001 season.

[6] On October 4, 2004, she nearly collided with the seawall at Port Huron, Michigan[7][8] On February 26, 2015, a fire occurred aboard the Mississagi.

[9] On April 22, 2015, while downbound on the lower St. Marys River, the Mississagi ran aground near De Tour Village, Michigan.