BRA. The BRA was the first aircraft-laid sweep obstructor developed by SVK. It con-sisted of a case similar to the BM 1000 mine cases, 60 inches long and 24 inches in dia-meter. A reel was located in the center of the case containing 350 feet of mooring cable.

The nose was filled with 500 pounds of concrete, and the cutters and float were pla-ced in the after end. A stabilizing tail section was attached in the same way as on the BM mines. These obstructors were first manufactured by a French firm and were tested at Lake Constance. They were never used operationally, because the case and reel assembly were too weak to withstand the shock of impact. These assemblies were aban-doned and replaced by the BRB type obstructor.