| Owner | Manager | From | Until | | Pittsburgh Steamship Company - Cleveland, Ohio, United States | | 1929/08 | 1951/07 |
| United States Steel Corporation - USA | | 1951/07 | 1960/01 |
| Bradley Transportation Company - Rogers City, Michigan, USA | | 1960/01 | 1967/01 |
| United States Steel Great Lakes Fleet - USA | | 1967/01 | 1981/01 |
| USS Great Lakes Fleet Inc. - Duluth, Minnesota, USA | United States Steel Corporation | 1981/01 | 2001/01 |
| Grand River Navigation Company - Avon Lake, Ohio, United States | Lower Lakes Towing Ltd. | 2001/01 | 2011/12 |
| International Marine Salvage - Port Colborne, Ontario | | 2011 | Scrapped |
|
| Fleet | From | Until | | Pittsburgh Steamship Company - Duluth, Minnesota | 1948/08 | 1951/07 |
| United States Steel Corporation | 1951/07 | 1967 |
| Bradley Transportation Company - Rogers City, Michigan | 1960 | 1967 |
| United States Steel - Great Lakes Fleet - Duluth, Minnesota | 1967 | 2001 |
| Lower Lakes Towing Ltd. - Port Dover, Ontario, Canada | 2001/01 | 2011/12 |
|