Computer simulation has been widely used to predict the corrosion related electric and electromagnetic signatures of naval vessels. The modelling strategy has varied from simple dipole type models to detailed boundary element models of the vessel and its environment. For the dipole models users have had to choose the location and strength of the dipoles based upon experience, using range data or data from similar vessels. Whereas the boundary element model enables the user to define the actual geometry of the vessel, the electrochemical properties of the materials and the properties of the environment as data to the model and obtain predictions of the electric and magnetic signatures.

This paper describes the simulation tools developed as part of the BEASY software to predict electric and magnetic signatures. Comparisons is made between results of the boundary element detailed models and the dipole type models.

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