| | Owner | Manager | From | Until |  | Inter Ocean Steamship Company - Duluth, Minnesota, USA | G.A. Tomlinson - USA | 1907/04 | 1929 |  | Sierra Steamship Company - Cleveland, Ohio, USA | G.A. Tomlinson - USA | 1929 | 1949 |  | Sierra Transportation Company - Cleveland, Ohio, USA | G.A. Tomlinson - USA | 1949 | 1950 |  | Columbia Transportation Company - Cleveland, Ohio, USA |  | 1950 | 1957 |  | Columbia Transportation Division | Oglebay Norton Company - United States | 1957 | 1964/06 | 
 | | Fleet | From | Until |  | Columbia Transportation Company - Cleveland, Ohio | 1950 | 1964/06 | 
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