| Owner | Manager | From | Until | | George A. Clark & Fred Vorwerk - Dunnville, Ontario, Canada | | 1942 | 1962/01 |
| Peter Minor - Dunnville, Ontario, Canada | | 1962/01 | 1969/01 |
| Dan Minor - Dunnville, Ontario, Canada | | 1969/01 | 1974/01 |
| Valley Brook Fish Farms - Ontario, Canada | | 1974/01 | 1976/01 |
| Great Lakes Marine Contracting Ltd. - Port Dover, Ontario | | 1976/01 | 1995/01 |
| Nadro Marine Services - Port Dover, Ontario, Canada | | 1995/01 | 2018/01 |
| McKeil Marine Ltd. - Hamilton, Ontario, Canada | | 2018/01 | |
|
| Fleet | From | Until | | Great Lakes Marine Contracting Inc. - Port Dover, Ontario, Canada | 1976/01 | 1995/01 |
| Nadro Marine Services - Port Dover, Ontario | 1995/01 | 2018/01 |
| McKeil Marine Ltd. - Hamilton, Ontario | 2018/01 | |
|