Racing maxi yachts are large offshore sailing yachts, typically 30 metres (100 feet) and above, built primarily for competitive offshore and grand prix racing rather than cruising. The category includes fully custom one-off designs and semi-custom production platforms from specialist yards, and spans a range of racing programmes from single-handed offshore records to fully crewed grand prix circuits.
Performance is the primary design driver: maxi yachts use carbon fibre construction throughout — hull, deck, rig, and appendages — to achieve the lowest possible displacement for their waterline length and sail area. Foiling configurations with canting keels, daggerboards, or lifting foils are common on current high-performance designs. Accommodation, where present, is minimal and functional — navigator's station, pipe berths, and basic galley — since interior weight and volume are reduced wherever regulations and intended use allow. Some semi-custom designs offer a degree of interior finish that makes them functional for offshore passages, but pure racing maxis carry no cruising amenities.
Construction is pre-preg carbon fibre sandwich, cured in an autoclave for maximum fibre-to-resin ratio and structural efficiency. Masts are carbon, typically supplied by specialist riggers. Propulsion is a small diesel auxiliary for harbour manoeuvring only; racing performance is entirely sail-powered. Class rules, where applicable, govern hull parameters, sail area, and equipment; some maxis race under IRC or ORC handicap rather than class rules. Build times for semi-custom designs are typically 18–24 months; fully custom projects run longer depending on design complexity.
