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Class of racing catamaran yacht that was developed for the 2017 America's Cup
AC50
![](//upload.wikimedia.org/wikipedia/commons/thumb/7/71/Oracle_Racing_AC50.jpg/235px-Oracle_Racing_AC50.jpg) America's Cup defender
17
, 2017
|
|
Design
| development class
[1]
|
---|
|
Crew
| 6
|
---|
Draft
| 2.40 m (7 ft 10 in)
|
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Air draft
| 24.90 m (81 ft 8 in)
|
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Type
| inshore racing catamaran
|
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Construction
| carbonfiber
|
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Hull
weight
| 2,332?2,432 kg (5,141?5,362 lb)
|
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LOH
| 15.00 m (49 ft 3 in)
|
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Beam
| 8.47 m (27 ft 9 in)
|
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|
General
| ? L-shaped daggerboards
? T-shaped rudders
|
---|
Ballast
| forbidden (solid or liquid)
|
---|
|
Rig type
| wingsail sloop
|
---|
Mast
length
| 23.60 m (77 ft 5 in)
|
---|
|
Mainsail
area
| 100 m
2
(1,100 sq ft) (wingsail)
|
---|
|
The
AC50
(defined in the America's Cup rules as
AC Class yacht
, or
ACC
) was a
wingsail
catamaran
development 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, wingsails, 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 wingsails 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 was replaced with the monohull
AC75
after the 2017 America's Cup.
The class achieved a maximum peak speed of 47.2 knots (87.4 km/h) over the water, recorded by ACRM telemetry aboard Sweden's
Magic Blue
.
[2]
The 2017 America's Cup class winning boat, designed by a team led by
Daniel Bernasconi
and sailed by
Team New Zealand
, featured a distinct polyhedral daggerboard stabilizer and pedal-powered hydraulics to control its 24m high fixed-wing mainsail; four crew providing the power from cycling stations in each hull instead of grinding winches by hand.
[3]
[4]
The AC50 design was developed into the one design
F50
class used for the
SailGP
competition.
References
[
edit
]