Motor Boat Racing History
From Powersports Information Wiki Source
History of Motorboat Racing
Motorboat racing has two main types of contest: speed racing and predicted-log racing.
Speed races use high powered boats with hydroplanes and predicted-log races are conducted with slow moving, runabouts that have v-shaped bottoms and are usually equipped with living quarters.
The hydroplane boats have flat or concave bottoms with finlike laterals known as sponsons or hydrofoils and travel over the water instead of through it, making them much faster than the predicted-log boats, which have to push against the water.
In predicted-log races, the contestants have to estimate the time it takes for them to complete the course and pass markers and bouys, using compass courses, tidal currents, and engine speed to make their calculations. The closer they are to their estimated or predicted times, the closer they are to being the winner.
Speed races are held over a closed course (5-30 miles) on lakes and rivers.
American motorboat racing is supervised by the American Power Boat Association (ABPA), which sanctions inboard, inboard endurance, professional outboard, stock outboard, unlimited outboard performance craft, drag, modified outboard, and offshore categories. International competition overseen by the Union of International Motorboating (UIM) in Monaco.
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