We've added the KCA series to the open-water solver. It includes the cavitation effects on the thrust and torque. A polynomial formulation is used for estimation of the relevant coefficients according to the following reference:
Radojcic, D. An engineering approach to predicting the hydrodynamic performance of planing craft using computer techniques. Transactions of the Royal Institution of Naval Architects, Vol. 133, 1991, pp. 251–267.