First U.S. built Great Lakes bulker since 1983 floated out Trieste - The first U.S. flagged Great Lakes bulk carrier to be built on the Great Lakes in nearly four decades marked a key point in its construction with its recent float out from the graving dock. Being built for The Interlake Steamship Company at the Fincantieri Bay Shipbuilding yard in Wisconsin, the vessel which is named the Mark W. Barker is the first Great Lakes bulk carrier built domestically since 1983 02/01/2021 Trieste - The first U.S. flagged Great Lakes bulk carrier to be built on the Great Lakes in nearly four decades marked a key point in its construction with its recent float out from the graving dock. Being built for The Interlake Steamship Company at the Fincantieri Bay Shipbuilding yard in Wisconsin, the vessel which is named the Mark W. Barker is the first Great Lakes bulk carrier built domestically since 1983.