Owner | Manager | From | Until |
Beker Phosphate Corporation - Greenwich, Connecticut, USA | | 1982 | 1985 |
Tampa Electric Company (TECO) - Florida, USA | Gulfcoast Transit Company - USA | 1985 | 2002/04 |
TECO Ocean Shipping - Florida, USA | | 2002/04 | 2007 |
United Marine Group (UMG) - USA | U.S. United Ocean Services - USA | 2007 | 2011/12/06 |
Rand Logistics Inc. - USA | Grand River Navigation Company - USA | 2011/12/06 | |