| Owner | Manager | From | Until | | Kingcome Navigation Ltd. - B.C., Canada | | 1966/04 | 1978 |
| Reliance Towing Service - B.C., Canada | | 1978 | 1979 |
| Rivtow Straits Ltd. - B.C., Canada | | 1979 | 2003 |
| Upper Lakes Group Ltd. - Toronto, Ontario, Canada | | 2003 | 2013 |
| Chaulk Air Inc. - Moncton, New Brunswick, Canada | | 2013 | 2015 |
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