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    Hydrodynamic Analysis of Dynamically Positioned Vessels

    Authors
    H.J.J, van den Boom U. Nienhuis (MARIN)
    Date
    Oct 1, 1983

    A method for the prediction of vertical ship motions in shallow water has been developed. In this method 3 contributions to the vertical motions are distinguished viz. an average part, a low frequency part related to wave grouping and a part related to individual wave action. Calculation procedures for each of the parts are presented and validated against model tests.In this paper a calculation method for ship motions in shallow water is presented. This method enables exploration of the effects of forward speed wave characteristics; and heading on the vertical motions of a ship. For the case of an LNG carrier in shallow water these effects are illustrated with respect to the vertical motions at the keel. See Figure 27. From the figure it is concluded tentatively that the effects of forward speed may not be neglected.

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    TAGS

    Stability, Seakeeping and Ocean Engineering Waves, Impacts and Hydrostructural CFD Development CFD/Simulation/Desk Studies Measurements and Control Data Science Time-domain Simulations Renewables Oil and Gas Infrastructure Marine Systems Life at Sea Transport and Shipping Model Testing motions simulation waves offshore engineering

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