모형시험 결과에 의거한 KCS 선형 조종성미계수의 심도에 따른 변화 연구

Abstract

Recently, manoeuvring ships in shallow waters has again become an issue to people researching manoeuvrability of ships. Keeping up with the recent trend in ship manoeuvrability research field, Maritime and Ocean Engineering Research Institute (MOERI/KIOST) made a project to research the manoeuvrability of a ship in shallow and confined waters. The project planned to conduct manoeuvring captive model tests of several ships on a false-bottom facility, and tests of KCS were conducted in the year 2012. This paper deals with an analysis of manoeuvring captive model tests of KCS focusing on the depth dependency of manoeuvring coefficients. Firstly, by the analysis of HPMM tests, manoeuvring coefficients of several depths were deduced. The deduced depth dependency is compared with two depth dependency formulae published by Sheng [2] and Kijima et al. [1]. By the comparison, it was found that although the empirical formula presented well-known tendency of depth dependency, it didn’t show good match with the case of KCS. Therefore, the author suggested that it is needed for the empirical formula to be modified with plenty of data.