Owner | Manager | From | Until |
Indian Towing Company Inc. - USA | | 1951 | 1952 |
Valentine Towing Corporation - USA | | 1952 | 1954 |
Seaval Tugboat Corporation - USA | | 1954 | 1963 |
Inland Towing Line Inc. - USA | | 1963 | 1969 |
Wallin Marine Corporation - USA | | 1969 | 1970 |
American Barge & Towing Company Inc. - USA | | 1970 | 1974 |
Mansfield Equipment Company - USA | | 1974 | 1978 |
Roger J. Au & Sons Inc. - USA | | 1978 | 1983 |
Gaelic Tugboat Company - USA | | 1983 | 1993 |
Holly Marine Towing Co. - USA | | 1993 | 1999 |
Gaelic Tugboat Company - USA | | 1999 | 2006 |
Zenith Tugboat Company - Duluth, Minnesota, USA | | 2006 | 2010 |
Purvis Marine Ltd. - Sault Ste. Marie, Ontario | | 2010 | |