Jeanneau Sun Odyssey 39i vs Dufour 310 Grand Large — Comparison
Specifications Side by Side
| Specification | Jeanneau Sun Odyssey 39i | Dufour 310 Grand Large |
|---|---|---|
| General | ||
| Manufacturer | Jeanneau | Dufour |
| Year | 2007–2013 | 2015–2020 |
| Type | Sloop | Sloop |
| Country | France | France |
| Designer | Philippe Briand | Felci Yacht Design |
| Dimensions | ||
| LOA | 12.04 m (39.5 ft) | 9.43 m (30.9 ft) |
| LWL | 10.50 m (34.4 ft) | 8.45 m (27.7 ft) |
| Beam | 3.85 m (12.6 ft) | 3.13 m (10.3 ft) |
| Draft | 1.95 m (6.4 ft) | 1.60 m (5.2 ft) |
| Weight | ||
| Displacement | 7,800 kg (17,196 lbs) | 4,150 kg (9,149 lbs) |
| Ballast | 2,350 kg (5,181 lbs) | 1,230 kg (2,712 lbs) |
| Sailing | ||
| Sail Area | 68.0 m² (732 ft²) | 40.0 m² (431 ft²) |
| Hull Material | Fiberglass | Fiberglass |
| Keel Type | Fin | Fin |
| Engine & Tanks | ||
| Engine | 29 HP | 15 HP |
| Fuel Capacity | 160 L (42.3 gal) | 80 L (21.1 gal) |
| Water Capacity | 300 L (79.3 gal) | 120 L (31.7 gal) |
| Accommodation | ||
| Berths | 8 | 4 |
| Cabins | 3 | 1 |
Performance Comparison
Detailed Comparison
The Jeanneau Sun Odyssey 39i and Dufour 310 Grand Large represent two takes on sloop-rigged sailing. The Jeanneau Sun Odyssey 39i is a 2000s design by Jeanneau from France, while the Dufour 310 Grand Large is a modern offering from Dufour from France. The Jeanneau Sun Odyssey 39i was penned by Philippe Briand. The Dufour 310 Grand Large was designed by Felci Yacht Design.
In terms of size, the Jeanneau Sun Odyssey 39i measures 12.04m (39.5ft) overall with a beam of 3.85m, compared to the Dufour 310 Grand Large at 9.43m (30.9ft) with a 3.13m beam. The Jeanneau Sun Odyssey 39i is 2.61m longer than the Dufour 310 Grand Large. The Jeanneau Sun Odyssey 39i displaces approximately 88% more than its counterpart, which significantly affects how each boat handles in different sea states.
Looking at performance, the Jeanneau Sun Odyssey 39i has good sail power for versatile performance with an SA/D ratio of 17.56 and 68.0 m² of sail area. The Dufour 310 Grand Large, with an SA/D of 15.74 and 40.0 m² of canvas, offers moderate sail power suitable for relaxed cruising. The Jeanneau Sun Odyssey 39i has the edge in terms of raw sailing performance.
For comfort and safety, the Jeanneau Sun Odyssey 39i offers a firm, racing-oriented motion (comfort ratio: 16.6) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.78). The Dufour 310 Grand Large has a comfort ratio of 18.3 and a capsize screening value of 0.78. The ballast ratios are 30.1% for the Jeanneau Sun Odyssey 39i and 29.6% for the Dufour 310 Grand Large, reflecting their respective approaches to stability.
Below deck, the Jeanneau Sun Odyssey 39i provides 8 berths in 3 cabins with 300L of water capacity and 160L of fuel. The Dufour 310 Grand Large offers 4 berths in 1 cabin with 120L water and 80L fuel capacity.
Verdict
For cruising: The Dufour 310 Grand Large is the better choice for comfortable cruising thanks to its higher comfort ratio, offering a gentler motion at sea that crews will appreciate on longer passages.
For racing: The Jeanneau Sun Odyssey 39i has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.
For liveaboard: The Jeanneau Sun Odyssey 39i offers more sleeping accommodation, making it better suited for extended living aboard. Consider water and fuel capacity for extended stays away from marinas.
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