Durango Marine Panama S.A. was formed in 1966. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Athlete.
Dryad Shipping Company was formed in 1973. It was a type -C company, mainly engaged in shipping. The company owned the vessel Olympic Dignity. 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.
Dover Marine Panama S.A. was established in 1990. It was a type-C company mainly engaged in shipping as the owner of the vessel "Olympic Serenity".
Dorset Shipping and Trading Corporation was formed in 1976. It was a type-B company mainly acting as intermediate holding company. It belonged to Atol Compania Naviera 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.
Dominion Naviera Panama S.A. was formed in 1976. It was a type-C company mainly engaged in shipping and acting as vessel owning company. In 1977 it belonged to Dorset Shipping & Trading Corporation and after some years to Windsor Trading. The company owned the vessel Olympic Sky, which was sold in 1979. After some years the company received a loan and bought the vessel Olympic Promise, which was finally sold in 1992. 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. The company was dissolved in 2005.
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.
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.