All things
power boat racing...


Welcome to the Big Show

Unlimited hydroplanes are the fastest, most spectacular racing category in APBA. If you’re a fan of motorsports and want to experience for yourself the best in power boat racing, then plan a trip to the next unlimited race. These are the world’s fastest racing boats; capable of speeds over 200 MPH and throwing roostertails behind them as high as 300 feet. Powered by the same turbine engines that once powered our military’s Chinook helicopters and running on Jet-A fuel, Unlimited engines are capable of pumping out 3,000 horsepower.


Unlimiteds have raced for over 100 years, evolving from giant wooden hulls belching smoke to today’s sleek beauties, which are commonly composed out of aluminum, carbon fiber, fiberglass, and graphite composites. Because of the incredible speeds, safety is paramount in the unlimited category. These boats require extra protection for the driver: an air system, windows cut from the same jet-tough as F-16’s, an escape hatch built in the floor of the cockpit, and extra impact protection all around. More than most categories, racing Unlimiteds requires teamwork. The talented driver is the star, of course. However, it takes a dedicated owner, skilled crew chief and an entourage of engine/hull/transport specialists to make a champion. This is the ultimate in powerboat racing, and it’s a worldwide phenomenon. The H1 Unlimited Air National Guard Series puts a dozen of these powerful boats on the water at events from Madison, Indiana to Doha, Qatar.

Unlimited Hydroplane

Unlimited Hydroplane


Unlimited Hydroplanes, probably the best-known racing powerboats, are the fastest in the world. These turbine-powered rockets on water can hit speeds over 220 MPH, throwing roostertails sky-high. For sheer speed and  spectacle, Unlimited racing is unmatched. For more on these extraordinary raceboats, visit

Unlimited Hydro Racing
Minimum Length: 
A single gas-turbine engine of approve type, a single aircraft V-12 piston engine not exceeding 2,250 cubic inches.
Minimum Weight: 
T-55 Turbine Boats, 6,575 Lbs. Piston-powered Boats, 5,775 Lbs. Includes weight of boat & motor exactly as raced
#1, #2 Diesel, stove oil, kerosene or approved biofuel
Must be designed to function as a planning hull - H1 observes the right to approve or disapprove any design. Maximum Hull Length, 32'
Must be by a single underwater or surface-piercing, fixed-pitch propeller. 3 Blades & 15in. Diameter maximum.
Est. Horsepower: 
3,000 HP
Competition Record: 
173mph, 2.5m course
Straightaway Record: 
220.505 MPH
Current National Champion: 
Steve David Oh Boy! Oberto