Navy bombers have a new target boat at which they may dive and drop bomb without endangering lives. Controlled by radio from the cabin of one of the bombers the thirty-four-foot boat needs no operator aboard. It skims along at thirty-five miles an hour and is said to be unsinkable. It was developed for the navy by Chris-Craft. In wartime it could be used as a torpedo by loading it withe high explosives and sending it crashing into a battleship.