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".
Panamerican Marine Corporation was established 1951. It was a type-D (aunt) company mainly engaged in chartering as intermediary representative.
Olympic Transportation Company was established in 1952. It was a type-C company mainly engaged in shipping and owner of the vessel "Olympic Mountain".
Montserrado Transportation Company was established in 1953. It was a type-C company mainly engaged in shipping and owner of the vessel "Olympic Splendour".
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".
Howland Panama S.A. was established in 1966. It was a type-C company mainly engaged in shipping and owner of the vessel "Olympic Progress". In 1986 the company sold the vessel "Olympic Progress".
Ingleside Panama S.A. was established in 1967. It was a type-C company mainly engaged in shipping and owner of the vessel "Olympic Ambition". The vessel was sold in 1981.
Hawkesbury Shipping Panama S.A. was established in 1970. It was a type-B company acting as intermediate holding company. In 1981 also acted as intermediate holding company. In 1991 all the shares transferred to Silverton Shipping Panama S.A.
Tacapan Marine Panama S.A. was established in 1973. It was a type-C company mainly engaged in shipping. The company was dissolved in 1993.
Pennine Navigation Company S.A. was established in 1983. It was a type-C company mainly engaged in shipping as the owner of the vessel "Olympic Merit".