Sunken tug boat salvaged from St. Marys River

The tug Hammond Bay after it sank in the St. Marys River July 1, 2013.

The tug Hammond Bay is now back above water after the boat sank in the St. Mary's River Monday afternoon.

The Coast Guard reports there was no environmental impact, despite the boat reportedly having 200 gallons of diesel fuel and 15 gallons of oil aboard.

Wednesday afternoon the U.S. Coast Guard says the U.S. Army Corps of Engineers salvaged the tug from the St. Marys River.

The Coast Guard Sector Sault Ste. Marie oversaw the response as the tug was refloated.

The crane barge Harvey lifted the tug out of the water and traffic along the St. Marys River remained open, however a 500-foot safety zone was enforced until it was successfully refloated.

Once dewatered the tug Hammond Bay was towed to Sault Ste Marie for repairs.

The Coast Guard says the operation took about four hours to complete. The cause of the sinking is unknown and still under investigation.