Redonda Navigation Panama S.A. was formed in 1970. It was a type-C (and type B) company mainly engaged in shipbuilding as a shareholder of Harland & Wolf Shipyards.
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.
Seaforth International Corporation was formed in 1977. It was a type-D company mainly acting as intermediate agency. It was responsible for collecting the freights of certain vessel-owning companies.
Sinaloa Shipping Panama S.A. was formed in 1973. It was a type-G company acting as passive company. In 1976 it was the owner of investment securities. In 1977 it was the owner of shares of Societe Des Forges & Chantiers de la Mediterranee.
This is a type-B, mother company that is an intermediate holding company of Panamanian and Liberian companies that owned Onassis’s assets until 1975. This company passed to the Christina Onassis Group of companies owned by ATOL.
Thurston Panama S.A. was formed in 1966. It was a type-G company acting as passive company.
Wedgeport Marine Panama S.A. was formed in 1970. It was a type-C company mainly engaged in shipping.
Wellington Shipping and Trading Co. Ltd. was formed in 1986. It was a type-B company mainly acting as intermediate holding company. It belonged to Pinelands Marine Panama S.A. 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.
Robisen Holding Inc. was a type C acted as an intermediate holding company.
A.S. Onassis S.A. was formed in 1954. It was a type-C company mainly engaged in shipping and tourism. The company was the owner of the yacht Christina. After 1975 it was a type-B company mainly engaged in real estate, as the tenant of the Skorpios island. In 1990 the company seems to be at Atol Group.
Albany Finance Corporation was formed in 1976. It was a type-C company mainly acting as intermediate holding company. In 1976 it belonged to United Investments Panama S.A. and in 1988 to International Finance Panama S.A.. The company was bearer of shares of Athina Roussel patrimony. 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.