Radio-controlled torpedo boats driven silently toward enemy ships by a battery-operated propeller are suggested by U. S. Naval Reserve officer who has built a six-foot power boat that started, steered and stopped by high-frequency signals. A storage battery propels the boat at five miles an hour. Lieut. Henry W. Wickes, stationed at Floyd Bennett field in Brooklyn, has navigated his “crewless torpedo boat” by radio from a distance as great as eleven miles. In actual war operations a radio-controlled boat, loaded with explosives or with a torpedo at its bow, might be directed against an enemy warship, blowing it up as it collides with the hull. It could be guided by a transmitter on shore, in another ship or even in an airplane overhead.