The paper presents the study of the magnetic signature for a component equipment of the engine sincron generator located on board a ship built from non-magnetic materials. The equipment is analysed in terms of physical and geometrical similarity criteria. The algorithm for computing the electrical circuits from the global compensation windings was correlated with the ship's geometrical shape. In was taken into consideration the fact that the winding arrangement is symmetrical to the ship diametrical plan, as well as the ship magnetic field. The paper purpose is to realise the equipment permanent and inductive magnetization compensation.