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http://dx.doi.org/10.3744/SNAK.2020.57.4.230

An Experimental Study on the Manoeuvrability of a Ship in Different GM and Trim Conditions  

Yun, Kunhang (Korea Research Institute of Ships & Ocean Engineering)
Kim, Dong Jin (Korea Research Institute of Ships & Ocean Engineering)
Yeo, Dong Jin (Korea Research Institute of Ships & Ocean Engineering)
Publication Information
Journal of the Society of Naval Architects of Korea / v.57, no.4, 2020 , pp. 230-240 More about this Journal
Abstract
The aim of this study was to investigate the manoeuvrability of a ship in different Center of Gravity (CG) conditions. Free Running Model Tests (FRMT), such as 35°turning circle tests, 20/20 zigzag manoeuvring tests, and 10/10 zigzag manoeuvring tests, were conducted in three GM and three trim conditions with 1/65.83 scaled KRISO Container Ship (KCS). The test results indicated that KCS in the lower GM condition and the trim by bow condition showed reduced advance and tactical diameter in turning circle tests and increased overshoot angles in zigzag tests, and those manoeuvring indices were strongly related with roll angle. In addition, sensitivity indices for three-axis CG position were suggested with prior research, and it showed that y-axis CG position significantly affected manoeuvrability of KCS due to the low GM. Therefore, in the case of KCS, it is evident that the roll angle during manoeuvre is closely related with manoeuvring indices.
Keywords
Trim condition; GM; Manoeuvrability; KCS(KCS); FRMT;
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Times Cited By KSCI : 2  (Citation Analysis)
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