An iceboat is a boat-like structure on runners, propelled over ice usually by sails. Modern iceboats have a central tube-like hull, a runner plank extending at right angles to the hull and affixed with a runner at either end, and a third runner, placed either forward or aft, serving as a rudder. In ancient times primitive iceboats were used in the Scandinavian region for haulage and transport.
Iceboating remains a mode of travel in some parts of Europe today. The sport of iceboating began on the Shrewsbury River in Red Bank, New Jersey, around 1840. Subsequent innovations made iceboats the fastest vehicles of the early 1900s, with speeds up to 225 kmh. Modern iceboats are about 6 m long and have sail areas of from 7 to 32.5 sq. m. These boats average about 65 to 95 kmh over the usual 32-km course. Recent innovations include the use of air motors and outboard motors that employ a spiked wheel to drive the boat across the ice, and the use of jet propulsion. Research Iceboat
 
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