| Owner | Manager | From | Until | 
| UK Minister of War Transport - England |  | 1944 | 1946 | 
| R. & J.H. Rea Ltd. - Bristol, England |  | 1946 | 1949 | 
| France, Fenwick Tyne & Wear Company - Newcastle, England |  | 1949 | 1970 | 
| E.R. Mellenger Company - Canada |  | 1970 | 1970/11 | 
| Industrial Insulators Ltd. - Canada |  | 1970/11 | 1972 | 
| Western Engineering Service - Thunder Bay, Ontario, Canada |  | 1972 | 1986 | 
| Great Lakes Marine Contracting - Port Dover, Ontario, Canada |  | 1986 | 1992 |