Onboard sea state estimation based on measured ship motions

Ulrik Dam Nielsen, David C. Stredulinsky

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    Abstract

    It is possible to obtain estimates of the sea state at the specific position of an advancing vessel by processing measurements of the vessel’s wave-induced responses. The analogy to a wave rider buoy is clear, although the situation of an advancing ship is more complex due to forward speed. The paper studies the ‘wave buoy analogy’, and a large set of full-scale motion measurements is considered. It is shown that the wave buoy analogy gives fairly accurate estimates of sea state parameters when compared to estimates from real wave rider buoys.
    Original languageEnglish
    Title of host publicationProceedings of the 12th International Ship Stability Workshop
    Publication date2011
    Publication statusPublished - 2011
    EventInternational Ship Stability Workshop - Washington,D.C.
    Duration: 1 Jan 2011 → …
    Conference number: 12

    Conference

    ConferenceInternational Ship Stability Workshop
    Number12
    CityWashington,D.C.
    Period01/01/2011 → …

    Bibliographical note

    Hosted by NSWCCD (David Taylor Model Basin) and the SNAME Chesapeake Section

    Keywords

    • Avancing ship
    • Sea state estimation
    • Dcision support systems
    • Motion measurements

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