High performance boats are purpose-built planing powerboats optimised for maximum speed, typically capable of 50–100 knots or more in race-prepared configurations. They are used primarily for offshore powerboat racing and recreational high-speed use by owners for whom speed is the principal specification criterion rather than accommodation, range, or seakeeping comfort.
Hull forms are deep-V with high transom deadrise angles — typically 20–24 degrees — which allow the hull to absorb wave impact at high speed without the deceleration and structural stress that flatter sections would produce. Stepped hulls, in which the underwater surface is interrupted by one or more transverse steps that trap air beneath the hull and reduce wetted area, are common on the fastest designs. The combination of high deadrise and hull steps produces a hull that is manageable at speed but requires experience and attention in beam seas, where the deep-V sections and high centre of gravity create specific handling characteristics that differ from conventional planing hulls.
Construction is fibreglass or carbon composite, with vacuum-infused sandwich laminates used on performance-oriented builds to minimise weight. Propulsion is high-output petrol or diesel inboard engines with surface-drive or sterndrive transmission; twin or triple engines are standard on larger examples. Some racing classes use outboard engines. Top speeds above 80 knots are achievable in controlled conditions on the fastest purpose-built designs, but these boats are not suited to general cruising, rough offshore conditions, or inexperienced operators.
