Auckland / Milano, 21st of
November 2017 - An exciting new era in America’s Cup racing has been
unveiled today as the concept for the AC75, the class of boat to be
sailed in the 36th America’s Cup is released illustrating a bold and
modern vision for high performance fully foiling monohull racing
yachts. Emirates Team New Zealand's and Luna Rossa's design teams
have spent the last four months evaluating a wide range of monohull
concepts. Their goals have been to design a class that will be
challenging and demanding to sail, rewarding the top level of skill for
the crews; this concept could become the future of racing and even
cruising monohulls beyond the America's Cup.
The AC75 combines extremely high-performance sailing and
great match racing with the safety of a boat that can right itself in
the event of a capsize. This is achieved by the use of twin canting
T-foils, ballasted to provide righting-moment when sailing, and roll
stability at low speed.
The normal sailing mode sees the leeward foil lowered to
provide lift and enable foiling, with the windward foil raised out of
the water to maximize the lever-arm of the ballast and reduce drag. In
pre-starts and through maneuvers, both foils can be lowered to provide
extra lift and roll control.
Although racing performance has been the cornerstone of
the design, consideration has had to be focused on the more practical
aspects of the boat in the shed and at the dock, where both foils are
canted right under the hull in order to provide natural roll stability
and to allow the yacht to fit into a standard marina berth.
An underlying principle has been to provide affordable
and sustainable technology ‘trickle down’ to other sailing classes and
yachts. Whilst recent America's Cup multihulls have benefitted from the
power and control of rigid wing sails, there has been no transfer of
this technology to the rigs of other sailing classes. In tandem with the
innovations of the foiling system, Emirates Team New Zealand and Luna
Rossa are investigating a number of possible innovations for the AC75's
rig, with the requirement that the rig need not be craned in and out
each day. This research work is ongoing as different concepts are
evaluated, and details will be released with the AC75 Class Rule before
March 31st, 2018.
The America's Cup is a match race and creating a class
that will provide challenging match racing has been the goal from the
start. The AC75 will foil-tack and foil-gybe with only small maneuvering
losses, and the ease at which the boats can turn will see a
re-emergence of classic pre-starts in the America's Cup. Sail handling
will also become important, with cross-overs to code zero sails in light
wind conditions.
A huge number of ideas has been considered in the quest
to define a class that will be extremely exciting to sail and provide
great match racing, but the final decision was an easy one: the concept
being announced was a clear winner, and both teams are eager to be
introducing the AC75 for the 36th America's Cup in 2021.
QUOTES:
GRANT DALTON, CEO Emirates Team New Zealand:
“We are really proud to present the concept of the
AC75 today. It has been a phenomenal effort by Dan and the guys together
with Luna Rossa design team and there is a lot of excitement building
around the boat in the development and getting to this point.”
“Our analysis of the performance of the foiling
monohulls tells us that once the boat is up and foiling and certainly
over around 12 knots of wind it is actually faster than an AC50 both
upwind and downwind.”
“Auckland is in for a highly competitive summer of racing in 2020 / 2021.”
DAN BERNASCONI, Design Coordinator Emirates Team New Zealand:
“When beginning this design process we had a list of
criteria to consider and meet in the design, but first and foremost was
to deliver a class of boat on the forefront of design and technology of
foiling monohull yachts that wold be challenging to sail and exciting to
match race.
We think we have achieved these goals - thanks also
to the constructive co-operation of Luna Rossa design team - as well as
the more practical detail to consider in terms of cost management and
logistics of running the boats.”
PATRIZIO BERTELLI, Chairman of Luna Rossa Challenge:
“The choice of a monohull was a fundamental condition
for us to be involved again in the America’s Cup. This is not a return
to the past, but rather a step towards the future: the concept of the
new AC 75 Class, which Emirates Team New Zealand and Luna Rossa design
teams have developed together, will open new horizons for racing yachts,
which, in the future, may also extend to cruising. It is a modern
concept, at the high end of technology and challenging from a sporting
point of view, which will deliver competitive and exciting match racing.
I would like to thank both design teams for their commitment in
achieving, in just four months, the goal which we had established when
we challenged”.
MAX SIRENA. Team Director of Luna Rossa Challenge:
“As a sailor I am very pleased of the concept jointly
developed by both design teams: the AC 75 will be an extremely
high-performance yacht, challenging to sail, who will require an
athletic and very talented crew. Every crew member will have a key role
both in the maneuvers and in racing the boat; the tight crossings and
the circling in the pre-starts – which are part of the America’s Cup
tradition – will be back on show, but at significant higher speeds. It
is a new concept, and I am sure that its development will bring
interesting surprises”.
Watch the images and videos on http://www.
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