Burlington Shipping Limited was formed after 1975. It was a type-C company mainly engaged in real estate. In 1990 the company belonged to ASO Group
Burnside Holding Corporation was formed in 1986. It was a type-B company mainly acting as intermediate holding company. It belonged to Pinelands Marine and after some years to Holky Investors Inc. This new company was formed after the division of the Onassis assets and the restructuring of the companies to serve the needs of the Christina Onassis group, which was managed separately by OMSA and separately from the Alexander S. Onassis Foundation's companies.
Calera Panama S.A. was established in 1968. It was a type-C company mainly engaged in shipping and owner of the vessel "Olympic Bond".
Camrose Panama S.A. was established in 1968. It was a type-C company mainly engaged in shipping and owner of the vessel "Olympic Avenger". After 1975 the main stockholder of the company was A.S.O. Naviera Panama S.A.
Caribbean Atlantic Cargo Inc. was formed in 1956. It was a type-C company mainly engaged in shipping and owner of the vessel Ondine.
Carlow Maritime Panama S.A. was formed in 1968. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Banner.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
Cartagena Shipping Company Panama S.A. was established in 1958. It was a type-C company mainly engaged in shipping and owner of the vessel "Olympic Valley".