J/109
Specifications
Hull
| LOA | 35.25 ft |
| LWL | 30.5 ft |
| Beam | 11.5 ft |
| Draft | 7 ft |
| Shoal Draft version | 5.75 ft(1.75 m) |
| Displacement | 10,900 lb |
| Ballast | 3,880.1 lb |
| Material | 35’ 4”10.75 m |
| Hull speed1.34·√LWL | 7.4 kn |
Rig & Sails
| Iforetriangle height | 46.5 ft |
| Jforetriangle base | 13.3 ft |
| Pmainsail luff | 43.25 ft |
| Emainsail foot | 15.5 ft |
| FLforestay | 13.3 ft |
| Mainsail | 671.2 sq ft |
| Jib (100%) | 309.2 sq ft |
| Spinnaker | 560.7 sq ft |
Accommodation
| Cabins | 2 |
| Berths | 4 |
| Heads | 6 |
| Water | 25.4 L |
| Fuel | 22.5 L |
| CE category | N/A€ |
Engine
| Volvo Penta | D1-3027 hpSee all 11 parts → |
About the J/109
Volvo D1-30 diesel offered later.
The J/109 is a high-performance 35.25 ft fractional sloop designed by Alan Johnstone and built by J Boats Tillotson Pearson (USA) in 2004. With a displacement of 10900.0 lb and a D/L ratio of 171.51, it represents a specialized niche within the J/Boats lineup, though the exact number of hulls built remains unconfirmed.
- Best for:
- This boat suits performance-oriented coastal cruisers and club racers who prioritize speed and handling over heavy offshore comfort, given its low comfort ratio of 20.4 and high sail area-to-displacement ratio of 21.03.
- Bluewater capability:
- With a capsize ratio of 2.08 and a max draft of 7.0 ft, the J/109 is primarily suited for coastal cruising rather than extended bluewater passages, reflecting its performance-focused hull form.
- Comparables:
- Comparable boats include the J/105 and J/110, as they share the same designer and era, but the J/109 is distinct with its wider 11.5 ft beam and heavier 3880.1 lb ballast compared to the lighter J/105.
Performance
ORC Performance Data(9 certificates)
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° | 5.3 | 6.3 | 6.8 | 7.0 | 7.1 | 7.1 | 7.2 |
| 60° | 5.6 | 6.5 | 7.0 | 7.2 | 7.3 | 7.4 | 7.4 |
| 75° | 5.9 | 6.8 | 7.2 | 7.4 | 7.6 | 7.7 | 7.8 |
| 90° | 6.2 | 7.0 | 7.4 | 7.7 | 7.8 | 8.0 | 8.3 |
| 110° | 6.0 | 7.0 | 7.5 | 7.8 | 8.2 | 8.5 | 9.0 |
| 120° | 5.8 | 6.9 | 7.5 | 7.9 | 8.3 | 8.6 | 9.3 |
| 135° | 5.2 | 6.5 | 7.2 | 7.7 | 8.2 | 8.7 | 9.9 |
| 150° | 4.4 | 5.6 | 6.5 | 7.2 | 7.5 | 7.9 | 8.6 |
| Beat VMG | 3.5 | 4.3 | 4.7 | 4.9 | 5.0 | 5.0 | 5.0 |
| Run VMG | 3.8 | 4.8 | 5.7 | 6.2 | 6.5 | 7.0 | 7.8 |
Estimated Value
Limited DataEstimated Cost of Ownership
Based on 35.25ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
7 reported issues across 6 systems for the J/109, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a J/109? 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 7 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
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Engine Parts & Maintenance
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Used sails that fit the J/109
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