International America's Cup Class

The International America's Cup Class ( IACC ) is a class of boat for racing yachts for the America's Cup ( AC) has been developed. The IACC -Class is a construction class which makes the yacht designers within a specified formula space for individual solutions. By the formula, the boats are almost identical and can sail as vergütungslos against each other. This 1:1 situation is an important prerequisite for the highly publicized match race, compete in the two boats against each other and the viewer can quickly see which yacht leads.

The IACC - class was established in the America's Cup in 1992 and replaced the used since 1958 12-Metre class. Previously, you used the J- class. The rule disputes in the America's Cup of 1988 the development of the IAAC class certainly accelerated. The New Zealanders were trying to win the Cup in the so-called unequal duel ( Mis Match) with a 36-meter yacht, but subject to the tricky U.S. sailors under the leadership of Dennis Conner, who took a catamaran and won.

The end of the IACC class of the 33rd America 's Cup marked in February 2010, which was held with multihull yachts. The winning U.S. team BMW Oracle Racing can largely determine the racing rules because of the Deed of Gift and wants to unsubscribe future races with multihull yachts.

IACC sail numbers

The IACC Sail numbers shall be issued continuously from the "America 's Cup Measument committee" (ACM ). The Vermessungskommittee decide depending on a certain progress when the sail number is issued. It consists of two parts, the prefix of three letters that indicates the nation's team or the syndicate and a continuous hull number. The National designation changes when the boat is sold to a syndicate of another nation, the hull number remains. So far, a sail number was issued twice only on a boat. RUS -62 was built on the basis of a very heavily modified body parts of RUS -24 and re-registered as RUS -62.

IACC class rules

Version 5.0 of the International America's Cup Class Rules (International America's Cup Class Rule ) was published on 15 December 2003. The copyright is held jointly by the defender ( defender ) Team Alinghi and the Challenger of Record, BMW Oracle Racing.

The IACC yachts have in a given frame length, weight ( max. 24 tons ), width (max. 4.5 m ) Draft (max 4.1 m ), sail area, etc. are constructed and therefore resemble themselves. The length, sail area and displacement must satisfy a formula that leads to boat lengths 20-28 m. An IACC yacht has 17 crew members, as well as a guest, thus a maximum of 18 people on board. If omitted the guest who is often invited by the sponsor, the team has to carry 100 kg of additional weight on board.

Successful IACC yachts and their crews

America's Cup

  • 2007 America's Cup winner - Alinghi SUI -100 ( defender ), Switzerland Switzerland
  • 2003 America's Cup winner - Alinghi SUI -64 ( challenger ), Switzerland Switzerland
  • 2000 America's Cup winner - Black Magic NZL -60 ( defender ), New Zealand New Zealand
  • 1995 America's Cup winner - Black Magic NZL -32 ( challenger ), New Zealand New Zealand
  • 1992 America's Cup winner - America ³, USA -23 ( defender ), United States United States

Louis Vuitton Cup

  • 2007 Louis Vuitton Cup winner - Emirates Team New Zealand, NZL -92, New Zealand New Zealand
  • 2006 Louis Vuitton Cup and America's Cup winner - Emirates Team New Zealand, New Zealand New Zealand
  • 2005 Louis Vuitton Cup and America's Cup winner - Team Alinghi, Switzerland Switzerland
  • 2004 Louis Vuitton Cup and America's Cup winner - Team New Zealand, New Zealand New Zealand

Umpire Signaling System (USS)

With the 31st America 's Cup in 2007, the referee signal system ( Umpire Signaling System ) has been introduced. The system allowed the arbitrators precisely the positions of the two boats involved in match racing each other on overlaps and their positions with respect to the turning points of the course to determine when approaching these buoys. On board each of the two yachts (defender and challenger ) a display is installed, with three LED lights show the situation as they see the referee. The colors are green, yellow and white:

  • Green light: entry zones (ZONE ENTRY ). Status ON means that the leading yacht is moved into the two-or three - length circle around the turning mark.
  • Yellow light: overlap ( OVERLAP ). Status ON means that the bow of the overtaking yacht overlaps with the tail of the leading yacht and there is no restriction on the leeward yacht to sail directly to the next turning point. The lying in Lee ( leeward ) yacht can sail above close to the wind as it makes the most direct route to the next turning mark required ( yacht can luff ). The yacht lying in Lee can force the sailing to windward yacht for turning or luff into the wind.
  • White light: Rule 17.1. Status ON indicates that the depth of overlap is grown so that the yacht in Lee now has to steer a clean course to the next turning point and therefore may not luff and may force the overtaking yacht for turning or her as a higher price to the next turning point may impose necessary.

The regatta rules define which sailing tactics and maneuvers are permitted if a yacht a turning point approaches and if a past boat tried to overtake a leading boat. The aim of the USS is to limit cases of doubt and to avoid protests because the competitors have different assessments of a situation, especially to each other about their position and run the distance to a turning point and the basis of their assessment of tactical maneuvers that are prohibited under the racing rules.

The system was developed by Pilot Fish Networks AB.

The IACC formula

IACC formula:

  • DSP: displacement in cubic meters ( displacement in cubic meters)
  • L: Length in meters ( rated length in meters )
  • S: sail area in square meters ( rated sail area in square meters )

Future of the IACC class

Immediately after the conclusion of the 32nd America 's Cup in 2007 announced Brad Butterworth officially on behalf of the team Alinghi and the America's Cup management that a new boat design during the next edition of the America 's Cup should be sailed. One had the feeling that the IACC class would have been exhausted, and they wanted a new boat design, the larger boats with larger team bring and they permit, even athletic to sail in winds above 30 knots.

The existing yachts of the IACC class should continue to be used for qualifying races for the America 's Cup.

New AC90 class

The newly presented Boat rules no longer set the dimensions determined by a so-called rating formula, in which the individual values ​​depend on each other, but with a box rule, where the maximum values ​​are observed independently of each other.

The new boats will be up to 90 feet ( 27.43 m) and will be sailed by a crew of 20 persons (previously 17). The sail area is increased ( mast height 37.9 m, Mainsail: 300 m2, headsails: 171 m2, spinnaker unlimited). Despite the overall larger dimensions, the ship is at an increased width of max. 5.3 m (previously 3.5 meters ) displace less water ( only 23 instead of 24 t); so are the boats can accelerate much faster.

International Rule (sailing) Bow (ship) Stern
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