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I came to the harbor to see the barge St Mary’s Conquest(pushed by tug Bradshaw McKee), and was surprised when the Mark W. Barker appeared, backing out of the harbor. She came out to flip around in order to make way for another cement tug/barge, Samuel De Champlain/Innovation to dock at the Amrize terminal. She turned around and waited for the Conquest to enter before backing in. The Conquest was launched as an oil tanker in 1937, being converted to a cement barge by Bay Shipbuilding in Sturgeon Bay, WI in 1987. The Mark W. Barker was launched at the same shipyard in 2022, being the newest American lake freighter in service.