Publisher : Korean Institute of Navigation and Port Research
DOI : 10.5394/KINPR.2014.38.5.463
Title & Authors
A Study on the Calculation of Towing Force for the Disabled Ship and Its Experiments Nam, Taek-Kun; Jung, Chang-Hyun; Kim, Jin-Man; Choi, Hyuek-Jin;
In this paper, calculation of towing force required to tow the ship and experiments to verify its appropriacy are discussed. Friction, wind and wave-making resistance of vessel are considered to calculate towing force of specified vessel. Propeller resistance is also reflected and it is assumed that the propellers are locked. Node analysis to estimate additional resistance on towline is applied. Total towing force could be obtained by adding the ship's resistance and towline resistance. Experiments with training ship SAE YU DAL was executed to check the effectiveness of calculation methods and some comparison between experiments and calculation results was also done. From the comparative analysis, we confirmed that towing speed is primary terms in the calculation of towing force and propeller resistance is a major elements of ship's resistance with the increasing of towing speed. We can see that additional resistance induced by yawing of ship during towing have to be considered for total tow resistance.
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