New for the 37th America’s Cup, the AC40 is a multi-use one-design foiling monohull. It will be the official boat for the Youth and Women's America's Cup events. It will also be the platform for the preliminary regattas and training sessions for the 37th America’s Cup challengers. Smaller but no less powerful than its big sister the AC75, the AC40 is sailed by a crew of four.

The AC40 is built by McConaghy in China with the foils and systems being delivered by the Emirates Team New Zealand North Shore Facility and the boats have been delivered to teams in strict order of entry to the America’s Cup. 

Teams may modify and test components on the AC40 during which period they will be deemed an LEQ12, but for competition purposes and for the Youth & Women’s America’s Cup events, they will be returned to one-design according to strict rules around those specific events.

The AC75, the official 37th America's Cup boat, is a foiling monohull measuring 20.7 metres in length. Created for the 36th edition, this boat is second generation and can foil above the water at over 100km/h. It requires a crew of eight.

The boats will be a step up from what we saw in Auckland in 2021. The foils will be larger to promote quicker lift and faster flight. The boats will be lighter and onboard, the electronics and software systems will be vastly upgraded. The number of crew on the AC75 has been reduced from 11 to 8 to save weight. The move to reduce the crew means cycle power is back, and the cyclors, introduced by Team New Zealand in 2017, have returned to the game.

Several of the elements are strict one-design, such as the mast, rigging, foil cant-arms and cant hydraulics but the scope for design elsewhere is broad. To keep costs under control, it was also determined that teams would only be allowed to build one AC75 so the demand on getting the design right is at a premium. The boats will be expected to fly at speeds of around 50 knots in winds that average 12 knots in Barcelona’s late summer.