Owner | Manager | From | Until | Gwenllian Thomas Steamship Company - Wales | Evan Thomas Radcliffe & Co. Ltd. | 1953 | 1960 |
Island Shipping Ltd. (Bermuda) - Toronto, Ontario, Canada | Upper Lakes Group Inc. - Toronto, Ontario, Canada | 1960 | 1972 |
Upper Lakes Shipping Ltd. - Toronto, Ontario, Canada | J.D. Leitch - Toronto, Ontario, Canada | 1972 | 1986/11 |
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Fleet | From | Until | Upper Lakes Shipping Ltd. (ULS) - Toronto, Ontario | 1961 | 1986 |
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