The ship's demagnetization device (OUD) is designed to compensate for the induced and permanent magnetization of the ship by generating signals controlling the converters supplying the compensation windings. The device enables independent regulation of the currents of the ship's compensation windings.
There are marine demagnetization devices on the MW ships, designed and manufactured by specialists from the Gdańsk University of Technology:
- AUD IV type on ship with side number 251,
- AUD 2000 type on ships with side number: 262, 263, 421, 422, 423, 511, 621, 623, 624,
- AUD type on ships with side number: 281, 282, SD-11, SD-13,
- AUD-2 type on ships with side number: 821, 822, 823, 824, 825,
- EKD-207 type on ships with side number: 630, 631, 632, 633, 634, 635, 636, 637, 638, 639, 640, 641, 642, 643, 644, 645, 646.
In the years 2009-2016, modifications were made to the ship's demagnetization device (OUD):
- to EKD-207M on 14 ships of type 207 with side numbers: 631, 633-640, 642-646)
- to AUD-2M on 4 ships of type 767 with side numbers: 821-824,
- to AUD2000 on ship of type 874 with side number 265.
The CTBO Passive Defense Team is the supplier of the OUD system on the project ship 621 "Ślązak" with side number 241.
