# 2.4 Metre

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Class of one-person racing yacht

2.4 Metre International 2.4mR Development Design Development class Boat Crew 1 Draft 1 m (39 in) (Mark III) Hull Hull weight 260 kg (570 lb) LOA 4.16 m (13 ft 8 in) (Mark III) Beam 0.805 m (2 ft 7+3⁄4 in) Rig Rig type Fractional Sloop[1] Mast length 4.65 m (15 ft 3 in) Sails Upwind sail area 7.5 m2 (81 sq ft) (Mark III) Racing RYA PN 1250[2] [edit on Wikidata]

The **International 2.4mR** is a one-person [keelboat](/source/Keelboat). The class is a development class governed by the 2.4mR rule. The rule controlled by [World Sailing](/source/International_Sailing_Federation) (formerly known as ISAF) is one of the few classes designated as an International Class. The International 2.4mR Class rule is closely related to the International 12mR class rule that was used at the America's Cup.

While there is a small but active group of amateur or professional designers and builders around the world, around 90% of the 2.4mR boats are the commercially produced Norlin Mark III designed by Swedish yacht designer Peter Norlin. Over the years, new 2.4mR designs such as the Stradivari III, the Proton and the Super 3 have come into production.

The 2.4mR boats are primarily used for racing and the class holds highly competitive national events in many countries. World and European championships can attract as many as 100 boats at a time.

The 2.4mR is ideal for adaptive [sailing](/source/Sailing) since the sailor barely moves in the boat, and all settings can be adjusted from a facing forward seated position. Both hand-steering and foot-steering are possible. The boat is sailed without a [spinnaker](/source/Spinnaker), but it is equipped with a whisker-pole that is extending outward to hold the shape of the [jib](/source/Jib) when sailing downwind. The boat's capability as a truly inclusive sailing boat has been demonstrated over many years at multiple Open World Championships.

## History

After the 1980 [America's Cup](/source/America's_Cup), people in the Newport, RI area started sailing boats called Mini-12s. They were named after the [12-Metre](/source/12-meter_class) yachts that were used at the America's Cup. As the fleet started to grow, the word spread to Sweden, home of the yacht designer Peter Norlin. Peter Norlin refined the original designs, and along with other [naval architects](/source/Naval_architect), they collectively initiated the International 2.4mR Class that we know today. Although the 2.4mR is a development class, Peter Norlin has become the dominant designer, and the class is therefore often mistaken as a one-design class.

## One-design

In recent years attempts have been made to develop a one-design class based on the 2.4 Norlin Mark III. This was primarily because the competition within the Paralympics was meant to be more about the sailors' competitiveness and less about the equipment. This led to the introduction of Appendix K to the Class rules and a group of individuals started to work on a set of stand-alone one-design rules. This is still at the early stages but this effort is likely to lead to the emergence of a new one-design 2.4mR class alongside the existing development 2.4mR class.

## Rating formula

As an open class rather than a one-design, all boat designs must meet the following formula.[3]

- L + 2 d + S − F 2.37 ≤ 2.4 metres {\displaystyle {\frac {L+2d+{\sqrt {S}}-F}{2.37}}\leq 2.4{\mbox{ metres}}}

(all measurements in mm)

- L = the "corrected" length of the hull (see rule D.6.3)

- d = the midship girth difference (see rule D.6.4)

- F = the average freeboard height (see rule D.6.5)

- S = the total rated area of the mainsail and jib combined.

## Events

### Open World Championships

Main article: [2.4 Metre World Championship](/source/2.4_Metre_World_Championship)

### Para World Sailing Championships

Further information: [Para World Sailing Championships](/source/Para_World_Sailing_Championships)

The 2.4 metre has been used a number of times as equipment for the One-Person Technical Disabled discipline which holds an annual World Championships.

Year v t e Gold Silver Bronze Ref. 1999 Cádiz Heiko Kröger (GER) Jens Als Andersen (DEN) Phillippe Balle (FRA) [4] 2000 not held because of the 2000 Summer Paralympics 2001 St. Petersburg Heiko Kröger (GER) Thomas Brown (USA) Bjørnar Erikstad (NOR) [5][6] 2002 Medemblik Heiko Kröger (GER) Damien Seguin (FRA) Thomas Brown (USA) [7] 2003 Athens Heiko Kröger (GER) Damien Seguin (FRA) Thierry Schmitter (NED) [8] 2004 not held because of the 2004 Summer Paralympics 2005 Sønderborg Damien Seguin (FRA) Heiko Kröger (GER) Thierry Schmitter (NED) [9] 2006 Perth Heiko Kröger (GER) Helena Lucas (GBR) Bjørnar Erikstad (NOR) [10] 2007 Rochester Damien Seguin (FRA) Heiko Kröger (GER) Thierry Schmitter (NED) [11] 2008 not held because of the 2008 Summer Paralympics 2009 Athens Thierry Schmitter (NED) Heiko Kröger (GER) Helena Lucas (GBR) [12][13] 2010 Medemblik Thierry Schmitter (NED) Heiko Kröger (GER) Megan Pascoe (GBR) [14] 2011 Weymouth Thierry Schmitter (NED) André Rademaker (NED) Helena Lucas (GBR) [15][16] 2012 Charlotte Harbor Damien Seguin (FRA) Thierry Schmitter (NED) Paul Tingley (CAN) [17] 2013 Kinsale Guus Bijlard (NED) Heiko Kröger (GER) Damien Seguin (FRA) [18] 2014 Nova Scotia Heiko Kröger (GER) Helena Lucas (GBR) Damien Seguin (FRA) [19] 2015 Melbourne Damien Seguin (FRA) Heiko Kröger (GER) Matthew Bugg (AUS) [20] 2016 Medemblik Heiko Kröger (GER) Damien Seguin (FRA) Matthew Bugg (AUS) [21] 2017 Kiel Heiko Kröger (GER) Matthew Bugg (AUS) Damien Seguin (FRA) [22] 2018 Sheboygan Matthew Bugg (AUS) Damien Seguin (FRA) Dee Smith (USA) [23][24] 2019 Cádiz Damien Seguin (FRA) Antonio Squizzato (ITA) Bjørnar Erikstad (NOR) [25][26] 2021 Warnemünde Heiko Kröger (GER) Antonio Squizzato (ITA) Fia Fjelddahl (SWE) [27]

### Paralympics

See also: [Sailing at the Summer Paralympics](/source/Sailing_at_the_Summer_Paralympics)

From 2000 to 2016, the 2.4 Metre was the official single-crew class boat for [sailing at the Summer Paralympics](/source/Sailing_at_the_Summer_Paralympics) although it was used in a more one-design form utilising the Norlin Mk3 design.

Year v t e Gold Silver Bronze 2000 Sydney details Heiko Kroeger (GER) Jens Als Andersen (DEN) Thomas Brown (USA) 2004 Athens details Damien Seguin (FRA) Thomas Brown (USA) Thierry Schmitter (NED) 2008 Beijing details Paul Tingley (CAN) Damien Seguin (FRA) John Ruf (USA) 2012 London details Helena Lucas (GBR) Heiko Kroeger (GER) Thierry Schmitter (NED) 2016 Rio de Janeiro details Damien Seguin (FRA) Matthew Bugg (AUS) Helena Lucas (GBR)

## References

1. **[^](#cite_ref-sailboatdata_1-0)** ["SailboatData.com - 2.4 METER Sailboat"](https://sailboatdata.com/sailboat/24-meter). Retrieved 8 October 2022.

1. **[^](#cite_ref-RYA2012_2-0)** ["Portsmouth Number List 2012"](http://www.rya.org.uk/SiteCollectionDocuments/technical/Web%20Documents/py-general/2012%20listv3.xls). Royal Yachting Association. Retrieved 31 July 2012.

1. **[^](#cite_ref-specs_3-0)** Marie. ["International 2.4 mR Class Rules (2006)"](https://web.archive.org/web/20080517211214/http://www.inter24metre.org/links/CurrentClassRules.pdf) (PDF). Inter24metre.org. Archived from [the original](http://www.inter24metre.org/links/CurrentClassRules.pdf) (PDF) on 2008-05-17. Retrieved 2009-08-16.

1. **[^](#cite_ref-4)** [1999 IFDS Disabled Sailing World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=2) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-5)** [2001 IFDS Disabled Sailing World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=4146) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-6)** [http://www.spyc.org/World/Championships.htm](http://www.spyc.org/World/Championships.htm)

1. **[^](#cite_ref-7)** [2002 IFDS Disabled Sailing World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=4799) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-8)** [2003 IFDS Disabled Sailing World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=7263) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-9)** [2005 IFDS Disabled Sailing World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=7263) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-10)** [2006 IFDS Disabled Sailing World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=7623) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-11)** [2007 IFDS Disabled Sailing World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=9347) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-12)** [2009 IFDS Disabled Sailing World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=11576) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-13)** [http://www.disabledworlds09.gr](http://www.disabledworlds09.gr)

1. **[^](#cite_ref-14)** [2010 IFDS Disabled Sailing World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=11891) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-15)** [2011 IFDS Disabled Sailing World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=11892) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-16)** [http://www.ifdsworlds2011.com](http://www.ifdsworlds2011.com)

1. **[^](#cite_ref-17)** [2012 IFDS Disabled Sailing World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=13398) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-18)** [2013 IFDS Disabled Sailing World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=15773) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-19)** [2014 IFDS Combined World Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=16377) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-20)** [2015 Para World Sailing Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=17768) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-21)** [2016 Para World Sailing Championships](https://data-isaf.soticcloud.net/regattainfo.php?rgtaid=19063) at [World Sailing](/source/World_Sailing)

1. **[^](#cite_ref-22)** ["Kieler Woche 2017 manage2sail"](http://www.manage2sail.com/en-US/event/KielWeek#!/results?classId=33d0985d-df8d-437d-9674-d661a2c48a2c). *manage2sail.com*.

1. **[^](#cite_ref-23)** ["2018 Para World Sailing Championship"](https://web.archive.org/web/20211130235702/https://www.sailing.org/regattainfo.php?rgtaid=20614). *Sailing.org*. [World Sailing](/source/World_Sailing). Archived from [the original](https://www.sailing.org/regattainfo.php?rgtaid=20614) on 2021-11-30.

1. **[^](#cite_ref-24)** [http://www.paraworldsailing2018.com/](http://www.paraworldsailing2018.com/)

1. **[^](#cite_ref-25)** ["2019 Para World Sailing Championship"](https://web.archive.org/web/20220117072652/https://www.sailing.org/regattainfo.php?rgtaid=21313). *Sailing.org*. [World Sailing](/source/World_Sailing). Archived from [the original](https://www.sailing.org/regattainfo.php?rgtaid=21313) on 2022-01-17.

1. **[^](#cite_ref-26)** [https://www.paraworldsailing2019.com/en/](https://www.paraworldsailing2019.com/en/)

1. **[^](#cite_ref-27)** [https://www.manage2sail.com/sv-SE/event/24mrGoldCup2021#!/results?classId=24mR](https://www.manage2sail.com/sv-SE/event/24mrGoldCup2021#!/results?classId=24mR)

## External links

Wikimedia Commons has media related to [2.4 Metre (keelboat)](https://commons.wikimedia.org/wiki/Category:2.4_Metre_(keelboat)).

- [The Official site of the International 2.4mR Class Association](http://www.inter24metre.org/)

- [2.4mR (World Sailing)](https://www.sailing.org/classes/2-4-metre)

- [Malmsten Boats](https://www.24mr.se)

- [Charger 2.4](https://web.archive.org/web/20120609001645/http://chargercomposites.com/sail/charger-2-4/#access)

- [Super 3](https://www.super3.co.uk)

- [Australian 2.4mR National Class Association](https://www.revolutionise.com.au/24metre/home/)

- [Austrian 2.4mR National Class Association](http://www.2point4.at)

- [Canadian 2.4mR National Class Association](https://www.canada24mr.com)

- [Czech 2.4mR National Class Association](https://www.facebook.com/groups/751096615532753)

- [Dutch 2.4mR National Class Association](http://2punt4.nl)

- [Finnish 2.4mR National Class Association](https://www.fin24metre.org)

- [French 2.4mR National Class Association](https://www.2point4.fr)

- [German 2.4mR National Class Association](https://2punkt4.de)

- [Hong Kong 2.4mR National Class Association](http://www.2point4.racing/)

- [Italian 2.4mR National Class Association](https://www.duepuntoquattro.it)

- [Norwegian 2.4mR National Class Association](http://www.norway24.no/ny/)

- [Swedish National Class Association](http://www.swe24metre.com/)

- [UK 2.4mR National Class Association](http://www.ukassociation2-4mr.co.uk/)

- [US 2.4mR National Class Association](http://www.us24meter.org/)

v t e Sailing at the Summer Paralympics 1996 (demonstration) 2000 2004 2008 2012 2016 List of medalists

v t e Classes of World Sailing Current Olympic classes 470 49er 49er FX Formula Kite IQFoil Laser Standard Laser Radial Nacra 17 Singlehanded classes Contender Europe Finn Laser 4.7 Laser Standard Laser Radial Moth Musto Skiff O'PEN Skiff OK Dinghy Optimist RS Tera RS100 Topper Zoom 8 Centreboard classes 29er 49er 49er FX 420 470 505 B14 Cadet Enterprise Fireball Flying Dutchman GP14 International 14 International FJ Lightning Mirror RS Feva RS500 Snipe Splash Sunfish Tasar Vaurien Keelboat classes 2.4 mR 5.5 m 6 mR 8 mR 12 mR Dragon Etchells FarEast 28R Flying Fifteen Hansa 2.3 Hansa 303 Hansa Liberty H-boat International One Design J/22 J/24 J/70 J/80 Melges 20 Melges 24 Melges 32 Micro Platu 25 RC44 SB20 Shark 24 Soling Sonar Star Tempest Viper 640 Yngling Yacht classes Class40 ClubSwan 50 Farr 40 IMOCA 60 J/111 Maxi Soto 40 Swan 45 TP 52 X-35 X-41 Multihull classes A-Class Dart 18 Formula 16 Formula 18 Hobie 14 Hobie 16 Hobie 17 Hobie Dragoon Hobie Tiger Hobie Wildcat Nacra 15 Nacra 17 Nacra F18 Infusion Nacra 20 Carbon Topcat K1 Tornado Board Classes Windsurfer Formula Experience Formula Windsurfing Funboard Funboard Youth IQFoil Kona Mistral Raceboard RS:One Speed Windsurfing Techno 293 Wing Techno WF130 X-15 Kite IKA Open IKA Formula Kite IKA Twin Top Racing IKA Twin Top Freestyle IKA Twin Top Kitefoil IRSA remote-control classes 10 rater A Class Marblehead One Metre Former World Sailing classes Boards Aloha Lechner A-390 Mistral Junior RS:X RS:X One Windglider Dinghies 29erXX Buzz Byte ISO Laser 2 Laser Vago Keelboats 11:Metre One Design Elliott 6m IOD Ultimate 20 Mulithulls C-Class Division I Division II Division III Hobie 17 Hobie 18 M32 Nacra F18 ORMA 60 SL 16 Viper F16 Yachts Farr 30 (Mumm 30) Farr 45 Farr Maxi One Design ORMA 60 Mumm 36 Open 50 Sydney 40 X-99 World championships in sailing * Offshore Racing Congress * Sailing at the Summer Olympics * Sailing at the Summer Paralympics

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Adapted from the Wikipedia article [2.4 Metre](https://en.wikipedia.org/wiki/2.4_Metre) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/2.4_Metre?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.