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| Fleet | From | Until | | Wainwright Steamship Company - Erie, Pennsylvania | | 1915 |
| Fort Henry Transit Company - Cleveland, Ohio | | 1921 |
| Columbia Steamship Company - Cleveland, Ohio | | 1931 |
| Columbia Transportation Company - Cleveland, Ohio | | 1957 |
| Oglebay Norton Company - Cleveland, Ohio | | 1977 |
| Consolidated Dock Company - Toledo, Ohio | | 1992 |
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