Ship’s de-perming process using coils lying on seabed

A ship built from ferromagnetic steel disturbs the uniformity of Earth’s magnetic field. Changes of ship’s signature are due to magneto-mechanical interaction hull with field. The ship’s field can be detected by a naval mine. For this reason, vessel has be demagnetized. There several methods de-perming. The results experimental and computer simulations de-perming process using coils lying on seabed presented in paper. The simulation hysteresis model was carried out Opera3d 18R2. laboratory experiments were physical model, Helmholtz coils, magneto-resistive sensors, etc. computer simulations have shown that ship’s de-perming is possi