Optimal modeling of ship moving

We consider some aspects allowing to optimize the designing of ships with the desired propulsion properties and to estimate the tactical and technicoeconomic characteristics. First question concerns a forecasting of characteristics of flow near hull, including one in boundary layer and viscous wakes, and, above all, a data on water resistance in real conditions. Simulation is carried out in the towing tank with help of the developed methods allowing to reproduce a full-scale experiment with position of description of some hydrodynamic parameters. Also the classification of supercritical regimes of dynamic systems is given and the mechanism of occurrence of self-organization, low-mode chaos and multimode turbulence is predicted. It can be used, in particular, for modeling of ocean processes, in oceanography, etc. We noted the mechanism allowing to approach to the problem of ship moving with substantial decreasing of power inputs in terms of thin coherent formations moving along body.