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http://dx.doi.org/10.3744/SNAK.2021.58.6.407

An Experimental Study on the Change in Manoeuvring Performance According to the Static Heel Angle of a Twin-Screw Ship  

Kwon, Chang Seop (Korea Research Institute of Ships & Ocean Engineering)
Yun, Kunhang (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.58, no.6, 2021 , pp. 407-414 More about this Journal
Abstract
The manoeuvrability of a ship with an unwanted heel angle due to a maritime accident is changed from the original characteristics. The purpose of this study is to quantitatively investigate the change in the manoeuvring performance of a twin-screw ship under various hee angles and speed conditions. A series of free running model test campaigns were performed in the Ocean Engineering Basin of Korea Research Institute of Ships & Ocean Engineering (KRISO) for a twin-screw car ferry vessel. Turning circle test and zig-zag 10/10 and 20/20 tests were carried out on the heel angles of 0, -10, and -19.5 degrees. In addition, two-speed conditions were considered to understand the effect of ship speed. In order to examine the effect of the bilge keel, a heel angle of -22 degree where the bilge keel is exposed outside the water surface, was considered. Finally, the change of manoeuvring characteristics according to the heel angle for a twin-screw and a single-screw vessel is discussed.
Keywords
Heeled condition; Twin-screw ship; Manoeuvrability; FRMT;
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