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http://dx.doi.org/10.7846/JKOSMEE.2015.18.4.298

Development of Resistance Prediction Method for the Effect of Drifting Angle at the Towing Operation of a Disabled Ship  

Kim, Eun-Chan (Korea Research Institute of Ships and Ocean Engineering)
Choi, Hyuek-Jin (Korea Research Institute of Ships and Ocean Engineering)
Lee, Seung-Guk (Korea Research Institute of Ships and Ocean Engineering)
Publication Information
Journal of the Korean Society for Marine Environment & Energy / v.18, no.4, 2015 , pp. 298-303 More about this Journal
Abstract
When a disabled ship is being towed in a seaway, the resistance increase of the towed ship caused by both the external conditions such as wave and wind and the hull conditions such as drifting angle, should be accurately predicted. Most of the disabled ships cannot be towed in the front direction of hull, but they are usually towed in drifted direction with some drifting angle. In this sense, the resistance increase caused by the drifting angle is not an element to be ignored. In this paper, various methods for prediction of the resistance increase caused by the drifting angle are studied. In addition, new prediction methods such as front-lateral projected ratio method and empirical formula method by multiple regression analysis have been derived. The front-lateral projected area ratio method has been applied to a computer program for prediction of the towing condition, and this method has been approved to be a useful method in practical situations.
Keywords
Towed Ship; Tug Boat; Resistance Increase; Drifting Angle; Disabled Ship;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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