Following the first report the validation of accuracy is made of a new computation method, WISDAM-VI, which employs the density function technique on the free surface, and two applications to practical hulls are made. The first one is a flow around a tanker model in ballast condition and it is revealed that the wave breaking motion causes momentum defect and that it interacts with the viscous flow forming complicated wake. The second one is a flow around a high speed planing craft which involves highly nonlinear free-surface flow near the stern end. These demonstrate the versatile applicability of the WISDAM-VI method.