EN
The paper deals with synthesis of automatic control system for an unmanned underwaterrobotic vehicle. The problem of determining permissible propulsive forces and momentsnecessary for optimum power distribution within a propulsion system composed of azi-muth propellers (rotative ones). To allocate thrusts the unconstrained optimization me-thod making it possible to obtain a minimum-norm solution, was applied. A method waspresented for assessing propulsion system capability to generate propulsive forces (setcontrol inputs). For the case of lack of such capability an algorithm was proposed makingmodification of their values and determination of feasible propulsive forces (i.e. permissible controlinputs), possible. A numerical example which confirmed correctness and effectiveness of the proposedapproach, was also attached