| 3. |  | S.S. "Christopher Columbus" (Whaleback), 1893 | Ships; Passengers; Piers & wharves; Whalebacks; Steamboats | The S.S. Christopher Columbus is the most famous "whaleback" of the 43 ships of this type built. Whalebacks were developed in Duluth, Minnesota, by Captain Alexander MacDougall for freight service. The... |