One of the most unique lake vessels to sail through the Twin Ports was the M/V Incan Superior. While it operated from 1974 to 1992, this vessel is often overlooked in the history of shipping on Lake Superior. She was a railroad car ferry—a flat decked rail car carrying boat—that operated on the big lake hauling railroad cars between Thunder Bay, Ontario, Canada and Superior, Wisconsin. Essentially, the Incan Superior was more of a train than a boat. Read about the life of this unique vessel here.