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http://dx.doi.org/10.7846/JKOSMEE.2012.15.2.150

Development of the Ship Resistance Calculation Program for Prediction of Towing Forces for damaged Ships  

Choi, Hyuek-Jin (Korea Ocean Research and Development Institute)
Kim, Eun-Chan (Korea Ocean Research and Development Institute)
Publication Information
Journal of the Korean Society for Marine Environment & Energy / v.15, no.2, 2012 , pp. 150-155 More about this Journal
Abstract
One of the primary purposes of tugs is for the towing of other ships in salvage operations. In order to conduct such a task safely, the tug should be capable of generating the appropriate towing forces. Therefore the prediction of resistance against a towed ship during towing operation is a very important and essential procedure. This paper studies the ship resistance calculation program to predict towing force. The calculation program consists of the functions that calculate basic hull resistance in calm water, added resistance due to wind, drifting, hull roughness, waves, shallow water and currents. All predictions are calculated by statistical and empirical methods by graph or formula. The calculation results made by this program are compared with the results from the U.S. Navy's Towing Manual. These results confirm that this computer program is quite capable of appropriately predicting the resistance of damaged ships.
Keywords
Salvage; Towing Force; Prediction; Hull Resistance; Added resistance; Speed Loss;
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