SAULT STE. MARIE, Mich. (AP) - Authorities said a tug boat owned and operated by the U.S. Army Corps of Engineers sunk while being towed in the upper St. Marys River.
The U.S. Coast Guard said no one was aboard the Hammond Bay, which went down in the waterway between Michigan's Upper Peninsula and Canada.
The Coast Guard was notified early Monday that the crew of the tug boat Bill Maier, which was towing three barges and the Hammond Bay, lost sight of the Hammond Bay. The crew found an oil sheen on the water and a Hammond Bay life ring.
An Army Corps vessel found the Hammond Bay in 37 feet of water. The Coast Guard says normal river traffic is taking place, except for a safety zone around the sunken tug.