
Class A: motorboats less than 16 feet (4.9 m)Class 1: motorboats 16–26 feet (4.9–7.9 m)Class 2: motorboats 26–40 feet (7.9–12.2 m)Class 3: motorboats 40–65 feet (12–20 m)
A typical go-fast is laid-up using a combination of fibreglass, kevlar and carbon fibre, using a deep V style offshore racing hull ranging from 6.1 to 15.2 metres (20 to 50 ft) long, narrow in beam, and equipped with two or more powerful engines, often totalling more than 750 kilowatts (1,000 hp). The boats can typically travel at speeds over 80 knots (150 km/h; 92 mph) in calm waters, over 50 knots (93 km/h) in choppy waters, and maintain 25 knots (46 km/h; 29 mph) in the average 1.5-to-2.1-metre (5 to 7 ft) Caribbean seas. They are heavy enough to cut through higher waves, although slower.