| 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 |
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| Fleet | From | Until | | Columbia Transportation Company - Cleveland, Ohio | 1950 | 1964/06 |
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