GRAND SOLEIL 343 (JEZEQUEL)
Specifications
Hull
| LOA | 34.12 ft |
| LWL | 28.71 ft |
| Beam | 11.22 ft |
| Draft | 5.91 ft |
| Displacement | 10,251 lb |
| Ballast | 3,858.5 lb |
| Hull speed1.34·√LWL | 7.2 kn |
About the GRAND SOLEIL 343 (JEZEQUEL)
Designed by Alain Jezequel and built by Grand Soleil (Cantiere del Pardo), the Grand Soleil 343 is a performance-oriented sloop with a single production year of 1985. While the exact build count is unknown, this model represents a specific era of Italian yacht building characterized by lightweight construction and racing pedigree.
- Best for:
- This boat is best suited for experienced sailors seeking a fast, responsive coastal cruiser or racer-cruiser who prioritize performance over heavy offshore comfort. Its low displacement and high sail area-to-displacement ratio make it ideal for short-handed sailing in moderate conditions.
- Bluewater capability:
- With a displacement of 10251.0 lb and a capsize ratio of 2.07, the boat is moderately stable but lacks the heavy displacement typically preferred for serious bluewater passagemaking. Its fin keel and relatively light build suggest it is better suited for coastal cruising and protected waters rather than extended offshore voyages.
- Comparables:
- Comparable boats from this era include the Beneteau First 343 and the O'Day 34, which share similar dimensions and performance-oriented designs. These vessels offer similar masthead sloop configurations and target the same market of active weekend sailors.
Performance
ORC Performance Data(11 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 | 24 |
|---|---|---|---|---|---|---|---|---|
| 52° | 5.3 | 6.2 | 6.6 | 6.8 | 6.8 | 6.9 | 7.0 | 6.9 |
| 60° | 5.6 | 6.3 | 6.7 | 6.9 | 7.0 | 7.1 | 7.2 | 7.2 |
| 75° | 5.8 | 6.5 | 6.9 | 7.1 | 7.3 | 7.4 | 7.5 | 7.6 |
| 90° | 5.7 | 6.5 | 6.9 | 7.2 | 7.4 | 7.5 | 7.8 | 8.0 |
| 110° | 5.5 | 6.5 | 7.0 | 7.4 | 7.7 | 7.9 | 8.2 | 8.5 |
| 120° | 5.4 | 6.4 | 7.0 | 7.4 | 7.7 | 8.0 | 8.6 | 9.0 |
| 135° | 4.9 | 6.0 | 6.7 | 7.2 | 7.5 | 7.9 | 8.7 | 9.8 |
| 150° | 4.1 | 5.2 | 6.1 | 6.7 | 7.1 | 7.5 | 8.1 | 8.9 |
| Beat VMG | 3.5 | 4.2 | 4.6 | 4.8 | 4.9 | 4.9 | 5.0 | 4.9 |
| Run VMG | 3.6 | 4.5 | 5.3 | 5.9 | 6.5 | 6.9 | 7.6 | 8.2 |
Market Price
Estimated Cost of Ownership
Based on 34.12ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
2 reported issues across 2 systems for the GRAND SOLEIL 343 (JEZEQUEL), compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a GRAND SOLEIL 343 (JEZEQUEL)? 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 2 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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