1990 J/40 vs Dufour 40 — Comparison
1990 J/40
Dufour 40
Specifications Side by Side
| Specification | 1990 J/40 | Dufour 40 |
|---|---|---|
| General | ||
| Manufacturer | J/Boats | Dufour |
| Year | 1990–1995 | 2007–2012 |
| Type | Sloop | Sloop |
| Country | USA | France |
| Designer | Rod Johnstone | Umberto Felci |
| Dimensions | ||
| LOA | 12.30 m (40.4 ft) | 12.05 m (39.5 ft) |
| LWL | 10.21 m (33.5 ft) | 10.55 m (34.6 ft) |
| Beam | 3.65 m (12.0 ft) | 3.85 m (12.6 ft) |
| Draft | 2.08 m (6.8 ft) | 1.95 m (6.4 ft) |
| Weight | ||
| Displacement | 7,711 kg (17,000 lbs) | 7,800 kg (17,196 lbs) |
| Ballast | 3,402 kg (7,500 lbs) | 2,400 kg (5,291 lbs) |
| Sailing | ||
| Sail Area | 72.5 m² (780 ft²) | 68.0 m² (732 ft²) |
| Hull Material | Fiberglass | Fiberglass |
| Keel Type | Fin | Fin |
| Engine & Tanks | ||
| Engine | 35 HP | 40 HP |
| Fuel Capacity | 114 L (30.1 gal) | 160 L (42.3 gal) |
| Water Capacity | 189 L (49.9 gal) | 300 L (79.3 gal) |
| Accommodation | ||
| Berths | 6 | 8 |
| Cabins | 2 | 3 |
Performance Comparison
Detailed Comparison
The 1990 J/40 and Dufour 40 represent two takes on sloop-rigged sailing. The 1990 J/40 is a 1990s design by J/Boats from USA, while the Dufour 40 is a 2000s offering from Dufour from France. The 1990 J/40 was penned by Rod Johnstone. The Dufour 40 was designed by Umberto Felci.
In terms of size, the 1990 J/40 measures 12.30m (40.4ft) overall with a beam of 3.65m, compared to the Dufour 40 at 12.05m (39.5ft) with a 3.85m beam. The 1990 J/40 is 0.25m longer than the Dufour 40. The Dufour 40 displaces approximately 1% more than its counterpart, which significantly affects how each boat handles in different sea states.
Looking at performance, the 1990 J/40 has good sail power for versatile performance with an SA/D ratio of 18.87 and 72.5 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 1990 J/40 has the edge in terms of raw sailing performance.
For comfort and safety, the 1990 J/40 offers a firm, racing-oriented motion (comfort ratio: 18.0) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.74). The Dufour 40 has a comfort ratio of 16.4 and a capsize screening value of 0.78. The ballast ratios are 44.1% for the 1990 J/40 and 30.8% for the Dufour 40, reflecting their respective approaches to stability.
Below deck, the 1990 J/40 provides 6 berths in 2 cabins with 189L of water capacity and 114L of fuel. The Dufour 40 offers 8 berths in 3 cabins with 300L water and 160L fuel capacity.
Verdict
For cruising: The 1990 J/40 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 1990 J/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.