Owner | Manager | From | Until | City of Detroit Fire Commission - Detroit, Michigan | | 1901 | 1941 |
Sin Mac Lines Ltd. - Sorel, Quebec, Canada | National Harbours Board - Halifax, NS, Canada | 1941 | 1969 |
McAllister Towing & Salvage Co. - Canada | | 1969 | 1991/10 |
Dwor Metal Company Ltd. - Humberstone, Ontario, Canada | | 1991/10/01 | 1992/12 |
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Fleet | From | Until | Sincennes-McNaughton Tugs Ltd. - Montreal, Quebec | 1941 | 1969 |
McAllister Towing Ltd. - Montreal, Quebec, Canada | 1969 | 1992/06 |
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