The EMH Mine. In 1942 the Germans were still seeking to develor an acoustic unit for use in moored mines. Since the aluminum EMF was expensive to build, it was decided to desing a cheaper moored mine case of sheet-iron consturction, to be known as the EMH. However, since the design of an acoustic unit for moored mines was progressing very slowly, the development of the EMH was discontinued.

It was intended that the EMH be laid by surface craft, be the same size as the EMC, use an EMC anchor, and be capable of the same depth settings as the EMC.