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http://dx.doi.org/10.3796/KSFOT.2020.56.4.374

A study on the improvement of the accuracy of fishing trawlers maneuverability estimation at the design stage  

KIM, Su-Hyung (Training ship, Pukyong National University)
LEE, Chun-Ki (Div. of Navigation Science, Korea Maritime and Ocean University)
LEE, Min-Gyu (Training ship Management center, Pukyong National University)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.56, no.4, 2020 , pp. 374-383 More about this Journal
Abstract
At ship design stage, the maneuverability is generally estimated based on the empirical formula or the computational fluid dynamic (CFD), which is one of the numerical simulation methods. Using the hydrodynamic derivatives derived through these methods can quantitatively estimate the maneuverability of target vessels and evaluate indirect maneuverability. Nevertheless, research on estimating maneuverability is insufficient for ships not subject to IMO maneuverability standard, especially fishing vessels, and even at the design stage, the empirical formula developed for merchant ships is applied without modification. An estimation error may occur due to the empirical formula derived from the regression analysis results of a model test if the empirical formula developed for merchant ships with different hull shapes is applied to fishing vessels without any modification. In this study, the modified empirical formula that can more accurately estimate the fishing vessel's maneuverability was derived by including the hull shape parameter of target fishing trawlers in the regression analysis process that derives Kijima et al. (1990) formula. As a result, the modified empirical formula showed an average estimation error of 6%, and the result improved the average error of 49% of Kijima et al. (1990) formula developed for merchant ships.
Keywords
Maneuverability; Empirical formulas; Fishing trawlers; Hull shape parameters; Estimation errors;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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