Results of experimental and computer-aided studies are presented relative to a two-phase research program in which the maneuvering characteristics of Great Lakes ships in critical channels are examined. The PHASE I study identified specific problem situations in terms of channels, vessel types, and design variables. Subsequently, in the PHASE II study, maneuvering characteristics of two Great Lakes bulk carriers (i.e., the 1000-ft and 730-ft ships) are evaluated in captive model tests, full-scale trials, and digital simulations under ice-free and ice-covered water conditions (deep and shallow). Results indicate that the ice and shallow waters have significant stabilizing effects on inherent course stability and reduce turning performance to a great extent. Therefore, shiphandling in ice-covered channels is a critical problem as is clearly shown in full-scale trials and digital simulations. Recommendations are included to improve shiphandling performance in critical channels in terms of ship-waterway-systems design.


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    Title :

    Maneuvering Characteristics of Great Lakes Ships in Critical Channels


    Contributors:
    H. Eda (author) / F. DeBord (author)

    Publication date :

    1981


    Size :

    176 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






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