Dufour 310 Grand Large vs Dufour 40 — Comparison
Dufour 40
Specifications Side by Side
| Specification | Dufour 310 Grand Large | Dufour 40 |
|---|---|---|
| General | ||
| Manufacturer | Dufour | Dufour |
| Year | 2015–2020 | 2007–2012 |
| Type | Sloop | Sloop |
| Country | France | France |
| Designer | Felci Yacht Design | Umberto Felci |
| Dimensions | ||
| LOA | 9.43 m (30.9 ft) | 12.05 m (39.5 ft) |
| LWL | 8.45 m (27.7 ft) | 10.55 m (34.6 ft) |
| Beam | 3.13 m (10.3 ft) | 3.85 m (12.6 ft) |
| Draft | 1.60 m (5.2 ft) | 1.95 m (6.4 ft) |
| Weight | ||
| Displacement | 4,150 kg (9,149 lbs) | 7,800 kg (17,196 lbs) |
| Ballast | 1,230 kg (2,712 lbs) | 2,400 kg (5,291 lbs) |
| Sailing | ||
| Sail Area | 40.0 m² (431 ft²) | 68.0 m² (732 ft²) |
| Hull Material | Fiberglass | Fiberglass |
| Keel Type | Fin | Fin |
| Engine & Tanks | ||
| Engine | 15 HP | 40 HP |
| Fuel Capacity | 80 L (21.1 gal) | 160 L (42.3 gal) |
| Water Capacity | 120 L (31.7 gal) | 300 L (79.3 gal) |
| Accommodation | ||
| Berths | 4 | 8 |
| Cabins | 1 | 3 |
Performance Comparison
Detailed Comparison
The Dufour 310 Grand Large and Dufour 40 represent two takes on sloop-rigged sailing. The Dufour 310 Grand Large is a modern design by Dufour from France, while the Dufour 40 is a 2000s offering from Dufour from France. The Dufour 310 Grand Large was penned by Felci Yacht Design. The Dufour 40 was designed by Umberto Felci.
In terms of size, the Dufour 310 Grand Large measures 9.43m (30.9ft) overall with a beam of 3.13m, compared to the Dufour 40 at 12.05m (39.5ft) with a 3.85m beam. The Dufour 40 is 2.62m longer than the Dufour 310 Grand Large. The Dufour 40 displaces approximately 88% more than its counterpart, which significantly affects how each boat handles in different sea states.
Looking at performance, the Dufour 310 Grand Large has moderate sail power suitable for relaxed cruising with an SA/D ratio of 15.74 and 40.0 m² of sail area. The Dufour 40, with an SA/D of 17.56 and 68.0 m² of canvas, offers good sail power for versatile performance. The Dufour 40 has the edge in terms of raw sailing performance.
For comfort and safety, the Dufour 310 Grand Large offers a firm, racing-oriented motion (comfort ratio: 18.3) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.78). The Dufour 40 has a comfort ratio of 16.4 and a capsize screening value of 0.78. The ballast ratios are 29.6% for the Dufour 310 Grand Large and 30.8% for the Dufour 40, reflecting their respective approaches to stability.
Below deck, the Dufour 310 Grand Large provides 4 berths in 1 cabin with 120L of water capacity and 80L of fuel. The Dufour 40 offers 8 berths in 3 cabins with 300L water and 160L 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 Dufour 40 has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.
For liveaboard: The Dufour 40 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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Or view individual specs: Dufour 310 Grand Large · Dufour 40