On Grounding of Fast Ships

Bo Cerup Simonsen, Preben Terndrup Pedersen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    The paper deals with analysis of grounding of high-speed crafts. It is the purpose to present a comprehensive mathematical model for calculation of the overall dynamic ship response during grounding. This procedure is applied to derive the motions, the time varying sectional forces and the local loads during grounding on plane, sloping, sandy bottoms for six different designs of fast monohull ships made from steel, aluminium or GRP sandwich materials. The results show that the effect of the hull flexibility is to reduce the overall dynamic sectional loads on the hull girder. The considered numerical examples also indicate that, even with impact speeds of 40 knots against a 1:10 sloping bottom, the global strength of the hull girder is not exceeded by the grounding induced loads.For the local deformation of high-speed ship hulls at the point of contact with the ground, the paper presents experimental results from crushing tests of aluminium hull girder components with realistic full-scale scantlings. A comparison with existing simplified calculation procedures for ductile metallic structures show that these procedures cannot be used to predict the crushing behaviour of the fore body of high speed ships.
    Original languageEnglish
    Title of host publicationConference Proceedings of DERA International Conference
    Place of PublicationDunfermline
    Publication date1997
    Publication statusPublished - 1997
    EventDERA International Conference, Advances in Marine Structures III - Dunfermline
    Duration: 1 Jan 1997 → …


    ConferenceDERA International Conference, Advances in Marine Structures III
    Period01/01/1997 → …

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