A marine vessel (1) driven by an engine (10, 50) with a very large first propeller (11) and a less large coaxial contra rotating second propeller (12). The marine vessel (1) comprises a hull (2) with a baseline (20) extending between the bow and the aft, an engine (10, 50) arranged inside the hull (2), a pair of coaxial contra-rotating propellers (11, 12) mounted in tandem on concentric shafts (32, 34) at or near the aft of the hull (2) and operably connected to the engine (10). The pair of coaxial contra-rotating propellers (11, 12) comprises a first propeller (11) with a first radius (R1) and a second propeller (12) with a second radius (R2) that is smaller than the first radius (R1). The axis (9) of the concentric shafts (32, 34) has a vertical distance (V) from the base line (20) that is at least equal to the second radius (R2) and smaller than the first radius (R1). Said first propeller (11) being arranged to be kept stationary in a specific angular position whilst the second propeller (12) is rotatable by the large internal combustion engine (10, 50).


    Access

    Download


    Export, share and cite



    Title :

    MARINE VESSEL WITH A LARGE PROPELLER AND GEARBOX


    Additional title:

    WASSERFAHRZEUG MIT GROSSEM PROPELLER UND GETRIEBE
    NAVIRE EQUIPE D'UNE GRANDE HELICE ET D'UNE BOITE DE VITESSES


    Contributors:

    Publication date :

    2020-01-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



    MARINE VESSEL WITH A LARGE PROPELLER AND GEARBOX

    SCHNACK SØREN / SCHIØLER PETER TEGLMAN | European Patent Office | 2016

    Free access