| Owner | Manager | From | Until | | Government of Canada - Churchill, Manitoba, Canada | | 1962/09 | 1986/01 |
| McKeil Marine Ltd. - Hamilton, Ontario, Canada | | 1986/01 | 1992 |
| McAllister Towing & Salvage Co. - Canada | | 1992 | 1995 |
| Buchanan Forest Products (ABM Marine) - Thunder Bay, Ontario, Canada | | 1995 | 2008 |
| Les Grains Lac Superior Ltee. - Saint-Damase, Quebec, Canada | | 2008 | 2012 |
| Unknown ownership (laid up in Toronto) | | 2012 | 2021 |
| Sealand Shipping Services Ltd. - Baie Verte, Newfoundland, Canada | | 2021 | |
|
| Fleet | From | Until | | Canadian Government - National Harbours Board - Ottawa, Ontario, Canada | 1962/09 | 1986/01 |
| McKeil Marine Ltd. - Hamilton, Ontario | 1986/01 | 1992 |
| McAllister Towing Ltd. - Montreal, Quebec, Canada | 1992 | 1995 |
| Buchanan Forest Products Ltd - Thunder Bay, Ontario, Canada | 1995 | 2008 |
| Les Grains Lac Superior Ltee. - Saint-Damase, Quebec, Canada | 2008 | 2012 |
|