J/122
Description
The J/122 (with an enhanced J/122E variant introduced around 2014) is a high-performance 40-foot cruiser-racer designed by Alan Johnstone (of the J/Boats family) and built by J/Boats (primarily through J/Europe in France for European production, with some US involvement). Launched in 2007–2008, it combines offshore-capable cruising comfort with competitive racing prowess under IRC/ORC rules—featuring a narrow, sleek hull for reduced wetted surface and excellent upwind speed, a fractional sloop rig with carbon spar options, a deep fin keel with lead bulb (optimized low VCG for stability), spade rudder, infusion-molded sandwich construction (uni/multi-directional fiberglass, balsa core, vinylester resin via SCRIMP process for lightness/strength), twin helms in some layouts, spacious cockpit, and refined accommodations (2–3 cabins, functional galley/head, and liveaboard suitability). It's praised for light-air acceleration (sailing near windspeed in under 7 knots), strong heavy-weather performance, easy short-handed handling (push-button controls, asymmetric spinnaker), and versatility for club racing, offshore events, or family cruising. Production has been semi-custom/limited (dozens built worldwide since introduction, with the J/122E update improving refinements like deck layout and systems; exact totals not publicly tracked but considered a niche performance model with active resale market).
Construction Details
| Designer | Alan Johnstone |
|---|---|
| Builder | J/Boats |
| Length | 40.000 ft |
| LOA | 40.000 ft |
| LWL | 34.600 ft |
| Beam | 11.910 ft |
| Displacement | 14900 lb |
| Ballast | 5600 lb |
| Max Draft | 7.220 ft |
| Year Built | 2007 |
The standard boat dimensions
| i | 54.42 ft |
|---|---|
| j | 15.20 ft |
| p | 51.34 ft |
| e | 17.57 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 54.42 ft | 15.20 ft | 51.34 ft | 17.57 ft | - | - | - | - |
Sails
J/122 - MAINSAIL
| Luff | * 51.34 ft - (15648 mm) |
|---|---|
| Foot | * 17.57 ft - (5355 mm) |
| Leech | * 53.41 ft - (16279 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 53.68 ft - (16362 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | * 462.02 ft² |
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J/122 - JIBSAIL
| Luff | * 45.2 ft - (13777 mm) |
|---|---|
| Foot | * 19.73 ft - (6014 mm) |
| Leech | * 40.06 ft - (12210 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 17.48 ft - (5328 mm) |
| Deck Angle | * 12.04 ° |
| Area | * 395 ft² |
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J/122 - GENOA
| Luff | * 53.68 ft - (16362 mm) |
|---|---|
| Foot | * 24.2 ft - (7376 mm) |
| Leech | * 50.95 ft - (15530 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 22.8 ft - (6949 mm) |
| Deck Angle | * 3.99 ° |
| Area | * 611.92 ft² |
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J/122 - SPINNAKER
| Stays | * 53.68 ft - (16362 mm) |
|---|---|
| MidGirth | * 27.36 ft - (8339 mm) |
| Foot | * 27.36 ft - (8339 mm) |
| Perc LP | * 180 % |
| Area | * 1248 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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