Developments of the AC75 Mainsail

Published on February 26th, 2024

by Dave Reed, Sailing World
As complex as the AC75s will be when launched for racing at the Louis Vuitton 37th America’s Cup Challenger Series, New York YC’s American Magic trimmer Lucas Calabrese says that getting the team’s 75-foot foiler around the racecourse will demand the same fundamentals he honed in his years of Olympic 470 sailing. A mainsail is a mainsail, after all, but how trimmers manage the power in these towering high-aspect sails is exponentially more critical. The AC75 Tech Regulations, which define virtually every aspect of the AC75, are “quite restrictive” with the sails, Calabrese says. But for the second-generation twin-skinned mainsails, there is plenty of innovation yet to come.

Most teams accept that Barcelona will be a generally lighter-wind venue, so most design packages will focus on performance in medium to light breezes. And when it comes to designing the “aero package” for these AC75s, the challenge is to have ample power in the sails for takeoff and minimal drag when up to speed. “These boats go very fast, and as soon as we’re going very fast, we need to get rid of a lot of area, which we can do,” Calabrese says. “But the hard part is that we also need to maneuver and need to accelerate. So, there’s no one solution to this challenge. It all relates to the rest of the package.” – Full report

Following the publication of the AC37 Protocol and AC75 Class Rule on November 17, 2021, the AC75 Class Rule and AC Technical Regulations were finalized on March 17, 2022. The entry period opened December 1, 2021 and runs until July 31, 2022, but late entries for the 37th America’s Cup may be accepted until May 31, 2023. The Defender was to announce the Match Venue on September 17, 2021 but postponed the venue reveal, confirming it would be Barcelona on March 30, 2022. The 37th America’s Cup begins October 12, 2024.

Teams revealed to challenge defender Emirates Team New Zealand (NZL):
INEOS Britannia (GBR)
Alinghi Red Bull Racing (SUI)
Luna Rossa Prada Pirelli Team (ITA)
NYYC American Magic (USA)
Orient Express Racing Team (FRA)

2023-24 Preliminary Regattas
September 14-17, 2023 (AC40): Vilanova i la Geltrú, Spain
November 30-December 2 (AC40): Jeddah, Saudi Arabia
August 22-25, 2024 (AC75): Barcelona, Spain

2024 Challenger Selection Series
August 29-September 8: Double Round Robin
September 14-19: Semi Finals (Best of 9)
September 26-October 5: Finals (Best of 13)

2024 America’s Cup
October 12-21: 37th Match (Best of 13)

For more schedule details, click here.
Additionally, 12 teams will compete in the 2024 Youth & Women’s America’s Cup.

Additional details:

Source: American Magic

comment banner

Tags: , ,

Back to Top ↑

Get Your Sailing News Fix!

Your download by email.

  • Hidden
  • This field is for validation purposes and should be left unchanged.

We’ll keep your information safe.