2011 J/111 vs Dufour 40 — Comparison

2011 J/111
VS
Dufour 40Dufour 40

Specifications Side by Side

Specification2011 J/111Dufour 40
General
ManufacturerJ/BoatsDufour
Year20112007–2012
TypeSloopSloop
CountryUSAFrance
DesignerAlan JohnstoneUmberto Felci
Dimensions
LOA11.13 m (36.5 ft)12.05 m (39.5 ft)
LWL9.75 m (32.0 ft)10.55 m (34.6 ft)
Beam3.40 m (11.2 ft)3.85 m (12.6 ft)
Draft2.20 m (7.2 ft)1.95 m (6.4 ft)
Weight
Displacement4,990 kg (11,001 lbs)7,800 kg (17,196 lbs)
Ballast2,041 kg (4,500 lbs)2,400 kg (5,291 lbs)
Sailing
Sail Area71.0 m² (764 ft²)68.0 m² (732 ft²)
Hull MaterialFiberglassFiberglass
Keel TypeFinFin
Engine & Tanks
Engine22 HP40 HP
Fuel Capacity57 L (15.1 gal)160 L (42.3 gal)
Water Capacity76 L (20.1 gal)300 L (79.3 gal)
Accommodation
Berths68
Cabins23

Performance Comparison

SA/D Ratio (Higher = more sail power per displacement)
2011 J/111
24.71
Dufour 40
17.56
Ballast Ratio (Higher = more stability)
2011 J/111
40.90
Dufour 40
30.77
Capsize Ratio (Lower = safer offshore)
2011 J/111
0.80
Dufour 40
0.78
Comfort Ratio (Higher = gentler motion)
2011 J/111
14.54
Dufour 40
16.44

Detailed Comparison

The 2011 J/111 and Dufour 40 represent two takes on sloop-rigged sailing. The 2011 J/111 is a modern design by J/Boats from USA, while the Dufour 40 is a 2000s offering from Dufour from France. The 2011 J/111 was penned by Alan Johnstone. The Dufour 40 was designed by Umberto Felci.

In terms of size, the 2011 J/111 measures 11.13m (36.5ft) overall with a beam of 3.40m, compared to the Dufour 40 at 12.05m (39.5ft) with a 3.85m beam. The Dufour 40 is 0.92m longer than the 2011 J/111. The Dufour 40 displaces approximately 56% more than its counterpart, which significantly affects how each boat handles in different sea states.

Looking at performance, the 2011 J/111 has generous sail power for spirited sailing with an SA/D ratio of 24.71 and 71.0 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 2011 J/111 has the edge in terms of raw sailing performance.

For comfort and safety, the 2011 J/111 offers a firm, racing-oriented motion (comfort ratio: 14.5) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.80). The Dufour 40 has a comfort ratio of 16.4 and a capsize screening value of 0.78. The ballast ratios are 40.9% for the 2011 J/111 and 30.8% for the Dufour 40, reflecting their respective approaches to stability.

Below deck, the 2011 J/111 provides 6 berths in 2 cabins with 76L of water capacity and 57L of fuel. The Dufour 40 offers 8 berths in 3 cabins with 300L water and 160L fuel capacity.

Verdict

For cruising: The Dufour 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 2011 J/111 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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