| Owner | Manager | From | Until | | Pittsburgh Steamship Company - Cleveland, Ohio, United States | | 1943/07 | 1951/07 |
| United States Steel Corporation - USA | | 1951/07 | 1967 |
| United States Steel Great Lakes Fleet - USA | | 1967 | 2001/04 |
| Lower Lakes Towing Ltd. - Canada | | 2001/04 | 2021/01 |
| Purvis Marine Ltd. | | 2021/03 | |
|
| Fleet | From | Until | | Pittsburgh Steamship Company - Duluth, Minnesota | 1943/07 | 1951/07 |
| United States Steel - Great Lakes Fleet - Duluth, Minnesota | 1967 | 2001/04 |
| Lower Lakes Towing Ltd. - Port Dover, Ontario, Canada | 2001/04 | 2021/04 |
|