| Owner | Manager | From | Until | | Inland Steamship Company - Winnipeg, Manitoba, Canada | | 1929/03 | 1931 |
| St. Lawrence Steamships Ltd. - Montreal, Quebec, Canada | | 1931 | 1940 |
| British Admiralty - United Kingdom | | 1940 | 1949 |
| Quebec & Ontario Transportation Company - Thorold, Ontario, Canada | | 1949 | 1961/09 |
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| Fleet | From | Until | | Quebec & Ontario Transportation Company - Thorold, Ontario | 1949 | 1961/09 |
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