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The paper presents the results of experimental investigation of the hydrodynamics in unbaffled stirred vessel with eccentric Rushton turbine configuration. Basing on flow visualisation. the main flow features were determined. Laser Doppler Anemometry measurements provided radial and axial components of the mean flow velocity vectors. The obtained data of power consumption allowed to determine the impact of the impeller eccentricity ratio e/R on the power number Ne.