International J/24
Description
The J/24 (1977–present) is the most successful one-design keelboat in history and the boat that put J/Boats on the map. At just 24′ LOA (20′ LWL), 3100 lb displacement, and 950 lb of ballast in a fixed fin keel (4′ draft), it carries 262sq ft of working sail on a simple fractional aluminum rig, lively, fast, finger-light helm instantly responsive. With a large open cockpit for five crew, a tiny two-berth cuddy below (and optional head), and a 3–6 hp outboard in a well, it is the ultimate “race on Wednesday, sail with friends on Saturday” machine. More than 5,500 hulls have been built across four decades (production continues today in the U.S. and under license), with active fleets in over 40 countries and a world championship that still draws 80–100 boats. Tough as nails, inexpensive to maintain, the J/24 remains the gold standard for grassroots one-design racing and the boat that taught a generation how pure, addictive sailing feels.
Construction Details
| Designer | Rod Johnstone |
|---|---|
| Builder | Waterline Systems LLC |
| Length | 24.000 ft |
| LOA | 24.000 ft |
| LWL | 20.000 ft |
| Beam | 8.900 ft |
| Displacement | 3100 lb |
| Ballast | 950 lb |
| Max Draft | 4.000 ft |
| Year Built | 1977 |
The standard boat dimensions
| i | 26.25 ft |
|---|---|
| j | 9.50 ft |
| p | 28 ft |
| e | 9.75 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 26.25 ft | 9.50 ft | 28 ft | 9.75 ft | - | - | - | - |
Documents
Sails
International J/24 - MAINSAIL
| Luff | * 28 ft - (8534 mm) |
|---|---|
| Foot | * 9.67 ft - (2947 mm) |
| Leech | * 29.09 ft - (8867 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 29.3 ft - (8931 mm) |
| Head (inches) | * 4.5 in - (114 mm) |
| Area | * 139.84 ft² |
| Edit in Calculator |
International J/24 - JIBSAIL
| Luff | 27.167 ft - (8281 mm) |
|---|---|
| Foot | 10.25 ft - (3124 mm) |
| Leech | 24.75 ft - (7544 mm) |
| Percentage LP | * 98.21 % |
| Length Perpendicular | * 9.33 ft - (2844 mm) |
| Deck Angle | * 4.85 ° |
| Area | * 126.74 ft² |
| Edit in Calculator |
International J/24 - JIBSAIL
| Luff | * 22.65 ft - (6904 mm) |
|---|---|
| Foot | * 12.82 ft - (3908 mm) |
| Leech | * 19.32 ft - (5889 mm) |
| Percentage LP | * 114.95 % |
| Length Perpendicular | * 10.92 ft - (3328 mm) |
| Deck Angle | * 11.97 ° |
| Area | * 123.69 ft² |
| Edit in Calculator |
International J/24 - GENOA
| Luff | 26 ft - (7925 mm) |
|---|---|
| Foot | 15.42 ft - (4700 mm) |
| Leech | 24.5 ft - (7468 mm) |
| Percentage LP | * 149.37 % |
| Length Perpendicular | * 14.19 ft - (4325 mm) |
| Deck Angle | * 3.41 ° |
| Area | * 184.5 ft² |
| Edit in Calculator |
International J/24 - GENOA
| Luff | 27.75 ft - (8458 mm) |
|---|---|
| Foot | 15.42 ft - (4700 mm) |
| Leech | 26 ft - (7925 mm) |
| Percentage LP | * 149.58 % |
| Length Perpendicular | * 14.21 ft - (4331 mm) |
| Deck Angle | * 3.21 ° |
| Area | * 197.21 ft² |
| Edit in Calculator |
International J/24 - ASYMMETRICAL
| Luff | 27 ft - (8230 mm) |
|---|---|
| Foot | 16 ft - (4877 mm) |
| Leech | 25 ft - (7620 mm) |
| Perc LP | * 165 % |
| Area | * 324 ft² |
| Edit in Calculator |
International J/24 - SPINNAKER
| Stays | * 26.9 ft - (8199 mm) |
|---|---|
| MidGirth | * 17.1 ft - (5212 mm) |
| Foot | * 17.1 ft - (5212 mm) |
| Perc LP | * 180 % |
| Area | * 391 ft² |
| Edit in Calculator |
Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.
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