AC50
| Development | |
|---|---|
| Design | box rule[1] |
| Boat | |
| Crew | 6 |
| Draft | 2.40 m (7 ft 10 in) |
| Air draft | 24.90 m (81 ft 8 in) |
| Hull | |
| Type | inshore racing catamaran |
| Construction | carbonfiber |
| Hull weight | 2,332–2,432 kg (5,141–5,362 lb) |
| LOH | 15.00 m (49 ft 3 in) |
| Beam | 8.47 m (27 ft 9 in) |
| Hull appendages | |
| General |
• L-shaped daggerboards • T-shaped rudders |
| Ballast | forbidden (solid or liquid) |
| Rig | |
| Rig type | wing sloop |
| Mast length | 23.60 m (77 ft 5 in) |
| Sails | |
| Mainsail area | 100 m2 (1,100 sq ft) (wing) |
The AC50 (defined in the America's Cup rules as AC Class yacht, or ACC) was a wing sail catamaran box rule that governed the construction of the yachts used in the 2017 Louis Vuitton Cup and the 2017 America's Cup.
Like the larger AC72s used in the 2013 America's Cup, AC50s used L-shaped daggerboard stabilizers as well as T-shaped rudder elevators that were able to generate enough lift to allow the boats to exit displacement mode in winds in excess of 7kt. Prototype versions of crossbeams, wings, appendages, as well as steering and trimming systems had been tested by all syndicates on AC45 platforms as surrogate yachts before building their AC50. The class allowed hydraulic control of the wing and appendages. Motors and computer automation was banned in the class. Each challenger team was only allowed to build one AC50 for competition and only six boats were built.
The class achieved a maximum peak speed of 47.2 knots (87.4 km/h) over the water, recorded by ACRM telemetry aboard Magic Blue.[2]
F50
Three boats from the 2017 America's Cup were converted to comply with a new one-design rule called F50 which was based on AC50 hulls and components in order to create the new SAILGP racing circuit. The geometry of hydrofoils and airfoils has been modified in order to improve performance and stability. Apart from the mainsheet, all hydraulic trimming aboard the F50s (active pitch control of all appendages, daggerboard lifting/lowering, jibsheet) will be battery-powered and the crew will be reduced to five sailors.[3] Three new boats have been built from scratch by Core Builders Composites in Warkworth, NZ.
References
- ↑ "AC50 class rule version 1.10". America's Cup Event Authority. 2016-06-02.
- ↑ "Peak speed, raw data", 170606.zip/20170606151002-NAV-SWE.csv, Bermuda: America's Cup Race Management, event occurs at 15:13:05.797-15:13:06.597, 15:28:40.797-15:28:41.597, 2017-06-06
- ↑ The supercharged F50s, SAILGP, 2018-10-03