Chester Navigation Company S.A. was established in 1957. It was a type-C company mainly engaged in shipping and owner of the vessel "Olympic Cloud".
Clevedon Transportation Company was established in 1973. It was a type-C company mainly engaged in shipping.
Clifton Shipping Company Panama S.A. was formed in 1963. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Palm. 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.
Colbeck Marine Panama S.A. was formed in 1966. It was a type-C company mainly engaged in shipping.
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.