This report describes the development of statistical formulas relating ship controllability indices to measures of piloted performance. These formulas contribute to a methodology for the evaluation or prediction of risk in a waterway from the characteristics of user traffic. Data for this development were provided by a simulator experiment described in a previously published report entitled, The Effect of Ship Inherent Controllability on Piloted Performance: The Simulator Experiment,' by M.W. Smith, J. Mazurkiewicz, and W.K. Brown, CG-D-10-90/AD-A 228968. During this experiment, seven commercial ships, ranging in size from 33,000 to 250,000 deadweight tons made multiple runs through narrow channels under comparable conditions. The analysis reported here found that the means and standard deviations of the crosstrack distances required as a function of ship characteristics were best predicted in the immediate turn by the tactical diameter, and in other maneuvering regions by Nomoto's indices, T and K. The application of the new procedures to the U.S. Coast Guard's waterway design process is discussed. The process will be more accurate and versatile, but results will not be comparable to previously existing evaluations. (See Waterway Design Manual, M.W. Smith, CG-D-18-92/AD-A 257030.) Ship's inherent controllability, Ship's maneuverability, Nomoto indices, Marine simulation, Restricted waterways, Standard definitive maneuvers.


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    Title :

    Effect of Ship Inherent Controllability on Piloted Performance: Evaluation and Prediction


    Contributors:

    Publication date :

    1991


    Size :

    115 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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