Medford Panama S.A., was formed in 1976. It was a type-B company, acting as an intermediate holding company, mainly engaged in cash management. In 1990 the company belongs to Atol Group.
Mayflower Marine S.A. was formed in 1956. It was a type-B company mainly acting as an intermediate holding company. 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 2001.
Maryland Limited S.A. was establishd in 1956. It was a type-C company mainly engaged in shipping and owner of the vessel "Olympic Rainbow".
The company was created in 1948. It is a type-C company, mainly engaged in shipping.
Madden Marine Panama S.A. was established in 1961. It was a type-C company mainly engaged in shipping and owner of the vessel "Olympic Gate". In 1977 belonged to A.S.O. Naviera Panama S.A. The vessel "Olympic Gate" was sold to Holly Shipping Corporation in 1983.
Lynwood Marine Panama S.A. was established in 1969. It was a type-C company mainly engaged in shipping and owner of the vessel "Olympic Alliance". The company was dissolved in 2007.
Luxor Shipping Company S.A. was established in 1956. It was a type-C company mainly engaged in shipping and the owner of the vessel "Olympic Runner".
Lucerne Navigation Company Panama S.A. was formed in 1961. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Chivalry.