Owner | Manager | From | Until |
Defense Plant Corporation - United States | | 1943 | 1946 |
Lewis Transportation Corporation - United States | | 1946 | 1974 |
Narrows Tanker Corporation - United States | | 1974 | 1981 |
Gaelic Tugboat Company - USA | | 1981 | 1990 |
Roehrig Maritime Corporation - Staten Island, New York, USA | | 1990 | 2009 |
Stephen Freer (private) - United States | | 2009 | 2014 |