The purpose of this thesis is to analyze the vertical plane response of surface ships in close proximity towing. The problem is formulated by using the heave and pitch equations of motion in regular waves. The vertical motion of the leading and trailing ship attachment points is calculated. The relative motion between these points is then matched through a notional spring/damper model of the connection. This allows calculation of the complete response amplitude operators for the two ships in terms of their relative motion and connection force. Parametric studies are conducted in terms of connection spring and damper characteristics, speed, and sea direction. Regular wave results are extended in standard fully developed random seas. A notional example provides insight into future studies necessary to validate the close-proximity towing concept.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Vertical Plane Response of Surface Ships in Close Proximity Towing


    Contributors:
    C. Nash (author)

    Publication date :

    2001


    Size :

    98 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






    Towing hooks for ships

    CHOI SUNG HWAN / KIM KYUNG BU / LIM SANG HO et al. | European Patent Office | 2017

    Free access

    Computations of Flow around Ships with Free Surface or Obliqued Towing Angle

    Chou, S. K. / Chin, S. S. / Chang, F. N. et al. | British Library Conference Proceedings | 2005


    The gliding speed and the towing resistance of ships

    Faust, J. | Engineering Index Backfile | 1920