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Towards Predicting the Behaviour of Yachts in Following Seas

This paper reports on work conducted to date towards the development of a numerical simulation of yacht’s behaviour whilst sailing downwind in waves. Numerical models for the resistance, wave force and sail force have been incorporated into a longitudinal time domain simulation. The resistance and wave force components have been compared with experiments, conducted at the Australian Maritime Colleges' Ship Hydrodynamics Centre. The experiments used a series of IMS style yacht models designed by industry participants Murray Burns and Dovell. The effects of hull form parameters, appendages, encounter frequency and wave conditions on the wave force experienced by a yacht have been investigated and the results presented.