Cover of The Electrical Experimenter 5, no. 1 (May 1917)

In red type, the masthead features above a water-color image of an ocean liner at sea being pursued by a warship. The passenger vessel is outfitted with a defensive array of torpedo-shaped objects the float just off its hull on both sides, connected to the hull by long tethers. An explosion has gone off in the water at the center of the image, suggesting that the warship tested the defense. The caption reads “Electric Torpedo Destroyer.”