Abstract: The invention relates to a motor-driven pump intended for the pumping of liquids and driven by a pressurized motive fluid. The motor-driven pump (1) has a rotary sleeve (12) mounted in line between two stationary connections (8, 10). Mounted on the periphery of this sleeve (12) are the blades of a turbine which surrounds the sleeve (12). Rotary pumping members (24) are fastened inside the sleeve (12). The motor-driven pump (1) of the invention is intended more particularly for use as a submerged pump, especially as a pump for dredging at great depth.