The Transpac 52 (TP52) is a class of yacht used for competitive yacht racing. The class is recognised by the International Sailing Federation which entitles the class to hold an Official World Championships and the high profile ‘Super Series’.

TP52 boats are built and sailed to a set of rules which established the original design as a ‘box’ rule – where the boat must fit within a notional box of specified dimensions. The current rules specify a single masted, fixed keel mono-hull with a single rudder and maximum hull length of 15.85 metres (52 ft), beam width of 4.43 metres (14.5 ft), keel draft of 3.5 metres (11 ft) and spinnaker hoist height of 22.4 metres (73 ft), along with a minimum total weight of 6,975 kilograms (15,377 lb) and maximum keel bulb weight of 3,800 kilograms (8,400 lb).