Predication of resistance interference of asymmetric catamaran

On the basis of “thin ship” theory of wavemaking resistance, the paper use Wave Amplitude Function (RWAF) to replace Michell Wave Amplitude Function(MWAF) of reality hull in calculating wavemaking interference factor between demi-hulls of asymmetric catamaran, and to determine wavemaking resistance, the influence of dimensional relationship and configuration of demi-hulls on interference factor, and therefore the variance regulation of interference factor can be observed. Then wavemaking resistance of asymmetric catamaran can be determined by model resistance test data or diagram of appropriate monohulls with correction demi-hull interference factors. Furthermore, the method can be applied to optimization of dimensional relationship and demi-hull configurations for minimum resistance.