BM 1000 J. The BM 1000 J series was designed for use with induction mine-firing units. They are the same as the BM 1000 M, except for the addition of coil rods and case material. The ogive and tail sections of the "J" series are made of steel, and the cylindri-cal section is made on non-magnetic, 18% manganese steel.

The BM 1000 J mines differ in the following manner:

BM 1000 J-I has an 11-lb. nickel coil rod with copper winding.

Figure 77a – BM1000 J-I Mine with JDA 101 and BV 2

BM 1000 J-II has a 3-1/2 lb. nickel coil rod with aluminum winding.

Figure 76b – BM 1000 J-II Mine with JDA 102/103 and BV 2

BM 1000 J-II has a coil rod similar to the one used with the BM 1000 J-II, but with a winding of higher resistance.

The BM 1000 J-I and II were designed for the JDA 105 mine unit, and the BM 1000 J-III was designed for the AJ 102 mine unit. None of these mines was operationally in World War II.