The BM 1000 L Mine. This mine was still in the idea stage. It was to be a BM 1000 J and II modified to be used as a drifting mine against convoys. The charge was to be re-duced to 660 pounds, and a buoy was to be added to give the mine proper buoyancy. The A 107 mine unit was to be used with this mine. The project was abandoned because of lack of confidence in the effectiveness of an aircraft-laid, drifting mine, and difficulties encountered in proper release of the buoy.