Watertow Transportation Company was formed in 1973. 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.
Wenlock Panama S.A. was formed in 1971. It was a type-B company acting as intermediate holding company.
West Shipping Corporation Panama S.A. was established in 1956. It was a type-C company mainly engaged in shipping and the owner of the vessel "Olympic Champion". After 1975 ASO Naviera Panama S.A was the sole shareholder of the company. The company was dissolved in 1983.
Westchester Corporation Limited was formed in 1964. It was a type-D company acting as intermediary representative.
Westwind Shipping Panama S.A. was established in 1985. It was a type-C company mainly engaged in shipping as the owner of the vessel "Calliroe Patronicola".