Volontari della morte

Another war-themed cover, in this one Furio pilots a "pig".
It was a slow-running torpedo, similar to a small submarine, but its shape is more like a torpedo, suitable for carrying, at low speed, two operators equipped with autonomous underwater respirators and an explosive charge to be applied to the hull of the opposing ship in order to blow it up.
It was used by the Italian Royal Navy during the Second World War for sabotage actions against enemy ships, often anchored in militarily defended ports.