| Owner | Manager | From | Until | 
| Suisse-Atlantique Societe de Navigation Maritime S.A. - Switzerland | Suise-Atlantique Societe d'Arm. Maritime S.A. | 1948/02 | 1957 | 
| Graig Shipping Company Ltd. - Wales | Idwal Williams & Company Ltd. | 1957 | 1965 | 
| Glynafa Shipping Company Ltd. - Cardiff, Wales | Idwal Williams & Company Ltd. | 1965 | 1966 | 
| Sussex Steamship Corporation - Liberia |  | 1966 | 1967 | 
| Kadmilos Compania Maritima S.A. - Liberia |  | 1967 | 1973 | 
| Five Trust Shipping Company S.A. - Liberia |  | 1973 | 1975 | 
| National Steel Corporation - Philippines |  | 1975 | 1979/05 |