Physical modeling of hydrodynamic processes of fishing gear motion

Rules for physical modeling of hydrodynamic processes in the motion of fishing gears are deduced. Based on geometrical transformations, the connection between dimensionless characteristics of the hydrodynamic process of fishing gear motion is obtained. Using the $\pi$-theorem, the main similarity criteria for hydrodynamic processes of fishing gear motion are found. Rules of dynamic similarity of fishing gears are justified. Modeling scales for dynamic processes of fishing gear motion are obtained.