Whirligig beetles, the world's fastest ... uncrewed boats. Until now, researchers have believed that whirligigs attain their impressive speeds using a propulsion system called drag-based thrust.

18. -- Torpedo boat G 137, which has attained a speed of 33.9 knots, (about 39 land miles,) is declared to be the fastest war vessel afloat. View Full Article in Timesmachine » Advertisement ...