An item reported that several torpedoes of the barrage [=seamines] in the western waterway towards Cherbourg, France on 30 May during a heavy thunderstorm exploded in the roads. In the past happened the same at Cherbourg, Rochefort, Toulon and near Cape Saint-Jacques off Saigon. The assumption was that the lightning created induced currents which ignited the glowing circuits in the torpedoes.