The "minesweeper" is yet another variant of the JU52 performing a unique task. In order to meet these special requirements, the following alterations were made: The large ring was an electrified metal alloy affair built in sections that were supported with bracings under the fuselage and wings. Low voltage current was fed through the ring while the aircraft was flying over water suspected of being mined by the enemy. The electromagnetic field generated by the minesweeping ring would explode any magnetic mines encountered.