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Specifications Under Current Rules
Number of crew 3-5
LOA 7.32 m 24 ft (7.3 m)
LWL 6.10 m 20 ft (6.1 m)
Beam 2.71 m 8.9 ft (2.7 m)
Hull weight (with fittings) 1,406 kg 3,100 lb (1,400 kg)
Sail area with 100% headsail 261 sq ft 24.25 m
I 8.00 m 26.25 ft (8.00 m)
J 2.90 m 9.5 ft (2.9 m)
P 8.53 m 28.00 ft (8.53 m)
E 2.97 m 9.75 ft (2.97 m)

The J/24 is an International One-Design keelboat class as defined by the International Sailing Federation[1]. The J/24 is a one design class created to fulfill the diverse needs of recreational sailors such as cruising, one design racing, day sailing and handicap racing[2].

The J/24 is the world's most popular One-Design keelboat as measured by hulls produced[3][4][5][6][7][8].


In the summer of 1975 Rodney Johnstone designed and built hull number 1 in his garage in Stonington, Connecticut. "Ragtime" would serve as the master mould for the subsequent hulls. This design allowed him to start the very successful J-Boat company with his brother Bob Johnstone. By 1978 the class was popular enough to hold a one-design regatta in Key West with twenty boats on the line.[citation needed]

Current status

As of January 2009 approximately 5,475[9] J/24s have been produced. Approximately 20 new boats were produced in 2008, the average price of complete new boat without sails was approximately GBP20,000[9].

The International J/24 class has more than 50,000 people[7] sailing 5,300 boats worldwide; is established in nearly 40 countries with well over 150 active fleets; and is still considered the "gold standard" for modern one-design keelboats around the world.

Authority, rules and regulations

The international authority for the class is the ISAF, which shall cooperate with the International J/24 Class Association on all matters regarding these rules. Interpretations of these rules shall be made by the ISAF, which in coming to its decision may consult the International J/24 Class Association and the copyright holder[2].

The International J24 Class Association (IJCA) has the sole authority worldwide for the conduct and management of the International J/24 Class. The IJCA Constitution, the By-laws and other regulations are binding on all members, and all registered J/24s shall conform to Class Rules and any limitations imposed by the IJCA and ISAF[10]. IJCA is a "not-for-profit" organization.

Current rules (as well as the history of changes) for the International J/24 Class is available from the International Sailing Federation web site[11]

Crew requirements

J/24s are usually raced with a crew of five, but class rules require only that there be at least three crew, with a total combined weight under 882 lbs (400 kg).

Reasons for the J/24's popularity

While some of the world's best J/24 sailors have the latest version J/24, a well-prepared 1977 model, built to the same shape and weight with rigid end-grained balsa core construction can still win sailing the class world championship even after 30,000+ miles of trailering[7]. This is one of the many advantages of One-Design sailing.

It is fairly easy and inexpensive to get hold of a used boat due to the number of boats produced. There are 136 active fleets in the US alone[12], which offer a lot of race competition. This makes the J/24 a popular boat for beginners and experienced sailors.

Manufacturers / Builders

The boat is not manufactured by the designer. The manufacturing is done by multiple companies around the world in France, USA, Italy and Argentina[13]. J/24s shall be built only by builders licensed to do so under the copyright of J Boats, Inc., and shall comply with the building specifications detailed by the copyright holder[11].

See also


  1. International Sailing Federation "Classes and Equipment: J/24". http://www.sailing.org/270.php. 
  2. 2.0 2.1 J24 Class Association "J24 Class Rules effective March 1, 2009". http://www.sailing.org/tools/documents/J242009CR010309-%5B6995%5D.pdf. 
  3. Royal Motor Yacht Club UK "Royal Motor Yacht Club / J24". http://www.rmyc.co.uk/?q=sail/J24. 
  4. Comhem Sweden"Comhem Sweden". http://web.comhem.se/~u47488801/html/info.htm. 
  5. Puerto Vallarta news"J24 Worlds – World-class Sailing on World-class Banderas Bay". http://www.virtualvallarta.com/puertovallarta/puertovallarta/localnews/j24-worlds-worldclass-sai.shtml. 
  6. Sailing Networks "UK J 24 Class Association". http://www.sailingnetworks.com/organisation/view/83. 
  7. 7.0 7.1 7.2 J24 Class Association "J24 History". http://www.j24class.org/J24History/tabid/56/Default.aspx. 
  8. JBoats Southwest"J24". http://jboatssouthwest.com/new_boats/J24/j24.html. 
  9. 9.0 9.1 International Sailing Federation "2009 CLASS REPORT, International J/24 Class Association". http://www.sailing.org/tools/documents/J242009ClassReport-%5B7204%5D.pdf. 
  10. International J24 Class Association "IJCA Constitution, Revised August, 2006". http://www.j24class.org/Organisation/ClassDocuments/tabid/57/DMXModule/383/Command/Core_Download/Default.aspx?EntryId=125. 
  11. 11.0 11.1 International Sailing Federation "Class Rules J/24". http://www.sailing.org/2042.php. 
  12. J/24 USA Class Association "US Fleets". http://www.j24class.org/usa/org/distusa.htm. 
  13. J/Boat web site - J/Builders "J/Builders". http://www.jboats.com/jboats-sailboat-builders.htm. 

External links

de:J/24 es:J/24 it:J 24 nl:J24 no:J/24 sv:J/24