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The rig is [[Fractional rig|fractional]] with a [[backstay]] adjuster. The lower shrouds attach aft of the mast and are adjusted along with the backstay.<ref name=”:3″ /> |
The rig is [[Fractional rig|fractional]] with a [[backstay]] adjuster. The lower shrouds attach aft of the mast and are adjusted along with the backstay.<ref name=”:3″ /> [[Running rigging]] includes a mainsheet traveller, [[outhaul]], [[vang]], cunningham, [[reefing]] lines, and [[topping lift]].<ref name=”class_rules” /> It may be equipped with a [[spinnaker]].<ref name=”:1″>{{Cite web |last=J/Boats |title=J/24 Technical Specifications |url=https://jboats.com/j24-tech-specs |access-date=2025-10-19 |website=J Boats |language=en-GB}}</ref> Tracks are provided for both the [[Genoa (sail)|genoa]] and [[jib]] sheets.<ref>{{Cite web |title=J/24 TUNING GUIDE |url=https://www.northsails.com/en-ca/blogs/north-sails-blog/j24-tuning-guide-newport |access-date=2025-10-20 |website=North Sails |language=en}}</ref> |
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===Hull=== |
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Revision as of 15:34, 21 October 2025
Sailboat class
The J/24 is a one-design racing keelboat and the first J/Boats product. It achieved global success, with more than 5,200 built, though it is now out of production.[1] It is recognised by World Sailing and supports active competitive fleets and championships worldwide, including the J/24 World Championship.
The first J/24 was built in 1976 by then amateur designer Rodney Johnstone. At a time when sailing was dominated by the International Offshore Rule, the boat was designed to compete under a variety of handicaps, including the MORC.[2] It was immediately successful in racing. Rodney partnered with his brother Bob (then a marketing vice-president at AMF) to form J/Boats. Tillotson-Pearson put the boat into production. With a low price, astute marketing, and heavy promotion, 1,200 were sold in the first two years.[3][4]
Since then it has been produced by a number of licenced builders, all tightly controlled by the class association and J-Boats.
Construction
Both the deck and hull are fibreglass with an end-grain balsa core,[5] and a vinylester outer skin.[4]
Design
Rig
The rig is fractional with a backstay adjuster. The lower shrouds attach aft of the keel-stepped mast and are adjusted along with the backstay.[3] Running rigging includes a mainsheet traveller, outhaul, vang, cunningham, reefing lines, and topping lift.[6] It may be equipped with a spinnaker.[7] Tracks are provided for both the genoa and jib sheets.[8]
Hull
The rudder is hung on the plumb transom, and controlled by a tiller. It is equipped with a fixed outboard bracket. Class rules specify one outboard motor of at least 12 kg.[6] It displaces 3,100 lb (1,406 kg) and has a hull speed of 6.0 kn (11.1 km/h).[9] The fixed fin keel is bolted on and weighs 950 pounds[4] and gives the boat a 4.00 ft (1.22 m) draft.[7] It is usually launched by crane, hoisted from a lifting bar bolted to the keel.[9]
The displacement to length ratio makes it not a light boat boat by today’s standards, as does the water line length, being 4 ft shorter than the length overall.[2]
Interior
The simple and functional interior has very little headroom and is usually used only for sail storage,[3] although the two settees and “V”-berth provide berths for four. There is a sink but no fixed head. A portable icebox doubles as the companionway step.
Class authority
The international authority for the class is World Sailing, which cooperates with the International J/24 Class Association on all matters regarding the rules. The International J24 Class Association (IJCA) has the sole authority worldwide for the conduct and management of the International J/24 Class.[10] IJCA is a “not-for-profit” organization. There are 136 active fleets in the US.[11]
References
- ^ J/Boats. “Older J/Boats sailboat models no longer in production”. J Boats. Retrieved October 18, 2025.
- ^ a b “J/24”. sailingmagazine.net. Retrieved October 18, 2025.
- ^ a b c Nicholson, Darrell (June 14, 2000). “J/24”. Practical Sailor. Retrieved October 18, 2025.
- ^ a b c “J/Boats J/24: Oldie But Goodie – boats.com”. www.boats.com. Retrieved October 18, 2025.
- ^ “J/24”. sailingmagazine.net. Retrieved October 18, 2025.
- ^ a b “Class Rules Intrernational J/24 Class” (PDF). J/24 International Class Association. Retrieved October 18, 2025.
- ^ a b J/Boats. “J/24 Technical Specifications”. J Boats. Retrieved October 19, 2025.
- ^ “J/24 TUNING GUIDE”. North Sails. Retrieved October 20, 2025.
- ^ a b Henkel, Steve: The Sailor’s Book of Small Cruising Sailboats, page 294. International Marine/McGraw-Hill, 2010. ISBN 978-0-07-163652-0
- ^ “International J/24 Class Association Constitution” (PDF). j24class.org. October 20, 2020. Archived (PDF) from the original on July 13, 2024. Retrieved October 18, 2025.
- ^ “US Fleets”. J/24 USA Class Association. Archived from the original on December 5, 2009.
External links
