Maquette or replica, or modeling of the tools of the work of engineers and a small sample of what has been built or is supposed to be built. Provides a replica for explanation and justification so that non-technical people and those who want to get comprehensive information about a project in a short time with a replica of their vision. Makets are generally rigid and static, and in some cases, moving vehicles, boats or ships on the water or moving the sails of the mill to create jobs. Hydrodynamic motors are a combination of a reduced structure of the equipment or the environment with dynamic or hydrodynamic motion (water movement), which is a replica of the substructure and structure or water movement, the main component and purpose of the construction. In the construction of hydrodynamic models, a variety of architectural, electrical and electronics expertise, instruments, controls, mechanics, materials, chemistry and robotics are used. Of course, many other specialties are also being used to build a replica. In making a replica, you try to observe the scale in the minimization. But sometimes it’s possible to change dimensions to show some events. These models provide training and educational assistance in schools, universities and research centers.