The ships are in possession of individual ships participation companies. F.A. Vinnen & Co. and its shareholders own essential parts of these companies. The ships are managed under a comprehensive contract by F.A. Vinnen & Co. with the purpose of negotiating profitable charter arrangements with the dominant international shipping lines. The operation of the vessels and the profitable chartering to the shipping lines of the world are among the main tasks. Thus the Vinnen vessels have been employed in the liner services of such well-known companies like MAERSK, MSC, Hapag Lloyd, ZIM, NYK, CMA-CGM, Hamburg Süd among many others.