A semi submersible vessel for comprising first and second laterally spaced hull portions 14,16, and a central hull portion 18, connecting the two, where the three hulls define an open receiving section, and each of the first and second hull portions comprise a plurality of laterally spaced support beams, where at least one of the support beams on each of the first and second hull portions comprise winches. Preferably the support beams are built into the hull, and comprise feet (30, figure 5). Also disclosed are methods of using such a semi-submersible vessel to either lift or install either a topside (24, figure 6) or a subsea jacket (26, figure 6) of an offshore infrastructure, by moving the vessel into position, and either engaging the topside using the supporting beams to lift the topside, or engaging the jacket by using the winches and winch cables (36, figure 9)


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    Titel :

    A semi submersible vessel


    Beteiligte:
    LEE JOHNSON (Autor:in) / MORGAN HOWES-ROBERTS (Autor:in) / ANUJ CHOUDHARY (Autor:in) / KEVIN O'FLAHERTY (Autor:in)

    Erscheinungsdatum :

    10.04.2019


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / E02B HYDRAULIC ENGINEERING , Wasserbau



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