J/108
Specifications
Hull
| LOA | 35 ft |
| LWL | 30.5 ft |
| Beam | 11.5 ft |
| Draft | 6.8 ft/ 4 ft min |
| Displacement | 11,400 lb |
| Ballast | 4,409.2 lb |
| Material | 35’ 4”10.75 m |
| Hull speed1.34·√LWL | 7.4 kn |
Rig & Sails
| Iforetriangle height | 44.5 ft |
| Jforetriangle base | 13.3 ft |
| Pmainsail luff | 41.4 ft |
| Emainsail foot | 14.83 ft |
| FLforestay | 13.3 ft |
| Mainsail | 627.5 sq ft |
| Jib (100%) | 295.9 sq ft |
| Spinnaker | 503.1 sq ft |
Accommodation
| Cabins | 2 |
| Berths | 4 |
| Heads | 1 |
| Water | 34.3 L |
| Fuel | 25.1 L |
| CE category | N/A€ |
About the J/108
The J/108 is a 35.0 ft fractional sloop designed by Rodney S. Johnstone and built by J Boats (USA) in 2012. With a displacement of 11400.0 lb and a beam of 11.5 ft, this model represents a specific entry in J's lineup, though the exact total hulls built is currently unknown.
- Best for:
- This boat suits performance-oriented coastal cruisers and club racers who prioritize speed and handling over heavy offshore provisioning, given its relatively light displacement and high sail area-to-displacement ratio.
- Bluewater capability:
- With a capsize ratio of 2.05 and a comfort ratio of 21.39, the J/108 is designed for coastal and bay cruising rather than heavy bluewater passagemaking, reflecting its performance-oriented hull form.
- Comparables:
- Comparable boats include the J/105 and J/110, as they share the same designer, builder, and performance-focused fractional sloop layout, though the J/108 offers a slightly larger footprint with a 30.5 ft LWL.
Performance
Pricing
We don't have market pricing data for the J/108 yet. If you own one, help other buyers — what did you pay for it? Reports build a community price estimate over time.
Estimated Cost of Ownership
Based on 35ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
We don't have enough data on the J/108yet to publish model-specific findings we'd stand behind — but here's a free general inspection checklist, built from our research into what actually goes wrong on boats of this kind.
Drawn from 7,029 documented issues across 2,391 models, ordered so the areas that most often turn up problems come first.
Own a J/108? Reports from owners are what turn this into a model-specific checklist — and they're the reason the boats above it have one.
Similar Sailboats
Which engine powers your J/108?
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.
Already know your engine? Search all engines → to find its exact parts.
Used sails that fit the J/108
Checking eBay for sails sized to this boat's rig…