Colon Maritime S.A. was formed in 1951. It was a type-C company mainly engaged in shipping as the owner of the vessel Troy, as well as in tourism, as one of the companies that between 1951-1959 purchased shares of the Société des Bains de Mer and eventually took control of the company that owned Monaco’s most important businesses: the Casino, the Opera House and the famous Hôtel de Paris.
Columbia Marine S.A. was established in 1956. It was a type-C company mainly engaged in shipping. The company was dissolved in 1983.
Concepcion Financiera Panama S.A was formed in 1961. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Grace.
Condor Financiera Panama S.A. was established in 1959. It was a type-C company mainly engaged in shipping and owner of the vessels "Lake George" ("Anthem" after 1963), "McKittrick Hills", "Montebello Hills" and "Stony Point".
Cornwall Marine Panama S.A. was established in 1963. It was a type-C company and acted as a venture capital company. Formed to hold inventions and patents (dormant), Owns Establishment Daedalos and invention rights in 1976. In 1990 the company belongs to Atol Group.
Corona Navigation Company Panama S.A. was established in 1968. It was a type-B (and type-C) company acting as intermediate holding company.
Corrientes Sociedad Maritima S.A. was established in 1951. It was a type-C company mainly engaged in shipping and owner of the vessel "Olympic Mariner".
Corvallis Navigation Panama S.A. was established in 1974. It was a type-D company acting as intermediary representative. 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.
Coventry Panama S.A. was formed in 1980. It was a type-B company mainly acting as intermediate holding company. In 1980 the company owns all the shares of Dover Marine Panama S.A.
Cramer Panama S.A. was formed in 1973. It was a type-B company acting as intermediate holding company.
Cristobal Sociedad Anonima was established in 1952. It was a type-D company mainly engaged as intermediary representative.