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Inboard Hydroplane Racing

2009 Classes and Course Map

Runnin’ for The Rock

1.5 Litre Stock

Class letter T Max. Length 13' 6" Minimum Wt. 750 lbs.

Popular, small and economical 1.5 Litre Stock hydroplanes can hit 95 mph. They are powered by 4-cylinder 1200-1500 cc Toyota engines and use ordinary pump gas.

1 Litre Modified

Class letter Y Max. Length 13'6" Minimum Wt. 750 lbs.

Get creative! Anything goes on these highly modified 4-cylinder speed demons. Powered by pump gas or methanol to a top speed of 105 mph, the 1 Litre Modified offers great racing excitement.

2.5 Litre Stock

Class letter S Max. Length 13'6" Minimum Wt. 975 lbs.

The affordable 2.5 Litre Stock Class hydro can exceed 100 mph. Powered by 4-cylinder Ford Engines (2000cc or 2.3 litre) on pump gas, the 2.5 Litre affords very exciting side-by-side racing at an affordable cost.

2.5 Litre Modified

Class letter A Max. Length 16' Minimum Wt. 1325 lbs.

The 2.5 Litre Modified racer can hit speeds of over 125 mph-creatively. A few restrictions apply (for example engines must not exceed 166ci) However, these hydroplanes can use pump gas, methanol or aviation fuel, and engine alterations are limited only by the racers imagination. If you love exotic engines and extreme power, the 2.5 Litre Modified may be for you.

5 Litre

Class letter E Max. Length 16' Minimum Wt. 1450 lbs.

Ford, Plymouth and Chevrolet stock V-8 engines power the 5 Litre Stock Hydroplanes to speeds of 115 mph. Offering racing excitement on a budget, the 5 Litres allow drivers to show off their racing skills at many race sites across the US.

National Modified

Class letter NM Max. Length 19' Minimum Wt. 1600 lbs.
Not a class for the timid, the National Modified hydroplane offers speeds of 140 mph to the serious competitor. Many engine combinations are possible-from 4-cylinder to 350ci V-8's. The racer's ingenuity and driving skill can give him the edge in this highly competitive class.

Jersey Speed Skiff

Class letter: JS Min. Length – 16 ‘ Min. Wt – 1600 withut driver and rider

Skiffs were originally used for rum-running during Prohibition. The Jersey Speed Skiffs use a small block Chevy to propel the 16’ lapstrake runabouts in tight, close racing. The driver and riding mechanic must be prepared to take some jolts as the skiffs bounce across the water at 80 MPH

Course Map