J/122
Specifications
Hull
| LOA | 40 ft |
| LWL | 34.6 ft |
| Beam | 11.91 ft |
| Draft | 7.22 ft |
| Displacement | 14,900 lb |
| Ballast | 6,095.8 lb |
| Material | 40’12.19 m |
| Hull speed1.34·√LWL | 7.9 kn |
Rig & Sails
| Iforetriangle height | 54.42 ft |
| Jforetriangle base | 15.2 ft |
| Pmainsail luff | 51.34 ft |
| Emainsail foot | 17.57 ft |
| FLforestay | 15.2 ft |
| Mainsail | 900.7 sq ft |
| Jib (100%) | 413.6 sq ft |
| Spinnaker | 745.2 sq ft |
Accommodation
| Cabins | 2 |
| Berths | 4 |
| Heads | 6 |
| Water | 42.3 L |
| Fuel | 26.4 L |
| CE category | About284 000€(2020) |
About the J/122
J/122E (built in France) has same hull and rig with updated deck, coach roof, and interior.
The J/122 is a performance-oriented 40-foot fractional sloop designed by Alan Johnstone and built by J Boats, with production records indicating a single build year of 2008. As a relatively low-volume model with an unknown total hull count, it represents a specific era of J/Boats' design philosophy focused on racing capability within a manageable size.
- Best for:
- This boat is best suited for active coastal racers and performance cruisers who prioritize speed and handling over heavy bluewater comfort, given its light displacement of 14900.0 lb and high sail area-to-displacement ratio of 22.94.
- Bluewater capability:
- With a capsize ratio of 1.94 and a comfort ratio of 23.46, the J/122 is designed primarily for coastal racing and short offshore passages rather than extended bluewater cruising, reflecting its light displacement and performance hull form.
- Comparables:
- Comparable boats include the J/120 and J/125, which share the same designer, builder, and performance-focused fractional rig configuration, as well as the Beneteau First 40.7, which offers similar racing credentials from the same era.
Performance
ORC Performance Data(1 certificate)
Measured performance data from ORC (Offshore Racing Congress) certificates.
Polar Diagram
Boat speed (kn) vs. true wind angle. Source: ORC
Racing Ratings
Triple Number
ORC Measured
Sail Areas (ORC)
Speed Table (kn)
| TWA \ TWS | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
|---|---|---|---|---|---|---|---|
| 52° | 5.5 | 6.6 | 7.3 | 7.7 | 7.8 | 7.9 | 8.0 |
| 60° | 6.0 | 7.1 | 7.6 | 7.8 | 8.0 | 8.1 | 8.2 |
| 75° | 6.7 | 7.6 | 8.0 | 8.1 | 8.3 | 8.5 | 8.7 |
| 90° | 6.9 | 7.7 | 8.1 | 8.4 | 8.7 | 8.9 | 9.2 |
| 110° | 6.4 | 7.5 | 8.0 | 8.5 | 8.9 | 9.3 | 9.9 |
| 120° | 6.1 | 7.3 | 8.0 | 8.4 | 9.0 | 9.4 | 10.3 |
| 135° | 5.5 | 6.8 | 7.6 | 8.1 | 8.6 | 9.2 | 10.5 |
| 150° | 4.6 | 5.8 | 6.8 | 7.5 | 7.9 | 8.3 | 9.2 |
| Beat VMG | 3.6 | 4.4 | 5.0 | 5.4 | 5.5 | 5.6 | 5.8 |
| Run VMG | 4.0 | 5.0 | 5.9 | 6.5 | 6.9 | 7.4 | 8.2 |
Estimated Value
Limited DataEstimated Cost of Ownership
Based on 40ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
9 reported issues across 5 systems for the J/122, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a J/122? This is an in-depth report on the faults this model is known for — so you know exactly what to check when you walk the boat. For the price of a coffee.
- ✓ All 9 specific issues — severity, symptoms & fixes
- ✓ Model-specific pre-purchase inspection checklist
- ✓ Downloadable PDF to take to your surveyor — yours to keep
One-time $2.99 · secure checkout by Stripe · instant access · 30 days online, PDF yours to keep
Similar Sailboats
Which engine powers your J/122?
We haven't confirmed the engine for this model yet. If you own or know one, tell us — as owners report in, we build an accurate picture over time.
Brands sometimes mentioned for this model: Yanmar — is it one of these?
Already know your engine? Search all engines → to find its exact parts.
Used sails that fit the J/122
Checking eBay for sails sized to this boat's rig…