The new Hydroplane Invitational Cup Series brings H2000, Mod H and naturally aspirated 2.4 litre hydros together in a clear and consistent national format.
A new series with a clear purpose
Small hydroplanes have long been part of New Zealand powerboat racing. They are quick, responsive boats that suit competitors who enjoy accessible, close racing. Until now these hulls have been spread across several classes with no shared championship. The Hydroplane Invitational Cup Series has been created to provide a defined place for them to race together.
The H2000 Collective developed the series after reviewing how these boats are used and how the class could be better supported. The intention is to offer a practical, aligned structure for H2000, Mod H and naturally aspirated 2.4 litre hydros.
Why an invitational
The invitational format keeps the field consistent. Only inboard, naturally aspirated hydroplanes up to 2.4 litres are eligible. This allows organisers to align boat types and produce predictable, competitive grids. It also gives the class a clear identity within larger regattas.
Technical rules
The rules follow common standards for these boats. Engines must be production based four cylinder internal combustion units up to 2400 cc. They must remain naturally aspirated and retain the original head and block. Pump gas up to 100 octane is permitted. Induction is restricted to 51 millimetre individual throttle bodies or a 90 millimetre single plenum.
Hulls must meet class weight, length and width requirements. Length is measured along the running surface. Rudders and propellers are excluded. Adjustable prop or shaft angles and adjustable fins are not permitted underway.
Series structure
The championship runs across three events. Mangakino hosts the first round within a Hydro Thunder regatta. Karapiro and Arapuni follow. Each event uses three four lap heats and a final. Heats are limited to ten boats. The first two are randomly drawn and the remaining pair use reverse grid.
Points from all races contribute to the overall standings with a sponsored prize pool for the top three competitors and participation awards for teams completing more than one round.
Steady early interest
Boats including Triple Threat, Misbehavin, New Obsession, Breaking Point and Tempo Too have confirmed entries. The series provides a clear and consistent home for a group of boats that continue to play an important role in New Zealand’s powerboat scene.
