2.5 Litre Stock hydroplanes (“S” class) race to 100-plus mph, using 145 horsepower marine-based 2000 and 2300 Ford engines. S-boats offer very exciting side-by-side racing at a reasonable cost. Driving skill is paramount here, and driver development is inevitable, making this class an excellent stepping stone to bigger, higher-powered classes.
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Minimum Age: 16 years old
Minimum Length: 13′ 6″
Engine: 2000 and 2300 Ford Inline 4 Cylinder
Speed: 100+ MPH
Minimum Weight: 1025 lbs. including driver
Fuel: Gasoline per APBA specs
Cylinder Heads: 4 Cylinder
Est. Horsepower: 145 -
Competition Record: 90.639 MPH
Straightaway Record: 110.535 MPH
Previous Season National Champion:
The Trainer S-36 R Austin Eacret