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    Sinkage and trim of two ships passing each other on parallel courses.

    134857_134857.pdf (195.7Kb)
    Access Status
    Open access
    Authors
    Gourlay, Tim
    Date
    2009
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Gourlay, Tim. 2009. Sinkage and trim of two ships passing each other on parallel courses. Ocean Engineering. 36 (14): pp. 1119-1127.
    Source Title
    Ocean Engineering
    DOI
    10.1016/j.oceaneng.2009.06.003
    ISSN
    0029-8018
    Faculty
    School of Science and Computing
    Faculty of Science and Engineering
    Department of Imaging and Applied Physics
    Remarks

    The link to the journal’s home page is: http://www.elsevier.com/wps/find/journaldescription.cws_home/320/description#description. Copyright © 2009 Elsevier B.V. All rights reserved

    URI
    http://hdl.handle.net/20.500.11937/4146
    Collection
    • Curtin Research Publications
    Abstract

    A theoretical method is used to predict the sinkage and trim of two moving ships as they pass each other, either from opposite directions, or as one ship overtaking the other. The description is simplified to open water of shallow constant depth. The method is based on linear superposition of slender-body shallow-water flow solutions. It is shown that even for head-on encounters, oscillatory heave and pitch effects are small, and sinkage and trim can be calculated using hydrostatic balancing. Results are compared to available experimental results, and applied to an example situation of a containership and bulk carrier in a head-on or overtaking encounter. Using dimensional analysis, simple approximate formulae are then developed for estimating the maximum sinkage of two similar vessels in a passing encounter.

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