Adderley Navigation Company Panama S.A. was formed in 1963. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Pride. After 1975 the company passed to the Christina Onassis Group of companies owned by ATOL and managed by OMSA. After 1999 the ownership of Christina Onassis Group of Companies passed to her daughter Athina Onassis. The management of the companies was still held, separately from the Alexander S. Onassis Foundation Companies, until 1999. The company was dissolved in 2000.
Alameda Marine Panama S.A. was formed in 1968. It was a type-D company acting as financial representative.
Aristotle S. Onassis S.A. was formed in 1954. It was a type-D company acting mainly as intermediary representative.
Auburn Shipping Panama S.A. was formed in 1969. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Adventure. After 1975 the company passed to the Christina Onassis Group of companies owned by ATOL and managed by OMSA. After 1999 the ownership of Christina Onassis Group of Companies passed to her daughter Athina Onassis. The management of the companies was still held, separately from the Alexander S. Onassis Foundation Companies, until 1999. The company was dissolved in 2000
Avondale Shipping Company Panama S.A. was formed in 1963. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Gulf (ex Melika). The company was dissolved in 1983.
Colbeck Marine Panama S.A. was formed in 1966. It was a type-C company mainly engaged in shipping.
Demerara Panama S.A. was formed in 1966. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Accord.
Devon Financiera Panama S.A. was formed in 1959. It was a type-B company engaged in venture capital investments. It was one of the owners of the Cornwall Marine Panama S.A., holding 750 shares and also one of the owners of Establishment Daedalos.
El Grillon S.A. was a type-C company engaged in real estate. Owns Land in Marbella, Spain