Dufour 310 Grand Large vs 1984 Dehler 25 — Comparison

Dufour 310 Grand Large
VS
1984 Dehler 25

Specifications Side by Side

SpecificationDufour 310 Grand Large1984 Dehler 25
General
ManufacturerDufourDehler
Year2015–20201984–1992
TypeSloopSloop
CountryFranceGermany
DesignerFelci Yacht DesignE.G. van de Stadt
Dimensions
LOA9.43 m (30.9 ft)7.50 m (24.6 ft)
LWL8.45 m (27.7 ft)6.30 m (20.7 ft)
Beam3.13 m (10.3 ft)2.50 m (8.2 ft)
Draft1.60 m (5.2 ft)1.35 m (4.4 ft)
Weight
Displacement4,150 kg (9,149 lbs)1,800 kg (3,968 lbs)
Ballast1,230 kg (2,712 lbs)680 kg (1,499 lbs)
Sailing
Sail Area40.0 m² (431 ft²)22.5 m² (242 ft²)
Hull MaterialFiberglassFiberglass
Keel TypeFinFin
Engine & Tanks
Engine15 HP8 HP
Fuel Capacity80 L (21.1 gal)25 L (6.6 gal)
Water Capacity120 L (31.7 gal)40 L (10.6 gal)
Accommodation
Berths44
Cabins11

Performance Comparison

SA/D Ratio (Higher = more sail power per displacement)
Dufour 310 Grand Large
15.74
1984 Dehler 25
15.46
Ballast Ratio (Higher = more stability)
Dufour 310 Grand Large
29.64
1984 Dehler 25
37.78
Capsize Ratio (Lower = safer offshore)
Dufour 310 Grand Large
0.78
1984 Dehler 25
0.82
Comfort Ratio (Higher = gentler motion)
Dufour 310 Grand Large
18.25
1984 Dehler 25
18.41

Detailed Comparison

The Dufour 310 Grand Large and 1984 Dehler 25 represent two takes on sloop-rigged sailing. The Dufour 310 Grand Large is a modern design by Dufour from France, while the 1984 Dehler 25 is a 1980s offering from Dehler from Germany. The Dufour 310 Grand Large was penned by Felci Yacht Design. The 1984 Dehler 25 was designed by E.G. van de Stadt.

In terms of size, the Dufour 310 Grand Large measures 9.43m (30.9ft) overall with a beam of 3.13m, compared to the 1984 Dehler 25 at 7.50m (24.6ft) with a 2.50m beam. The Dufour 310 Grand Large is 1.93m longer than the 1984 Dehler 25. The Dufour 310 Grand Large displaces approximately 131% 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 1984 Dehler 25, with an SA/D of 15.46 and 22.5 m² of canvas, offers moderate sail power suitable for relaxed cruising. The Dufour 310 Grand Large 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 1984 Dehler 25 has a comfort ratio of 18.4 and a capsize screening value of 0.82. The ballast ratios are 29.6% for the Dufour 310 Grand Large and 37.8% for the 1984 Dehler 25, 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 1984 Dehler 25 offers 4 berths in 1 cabin with 40L water and 25L fuel capacity.

Verdict

For cruising: The 1984 Dehler 25 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 310 Grand Large has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.

For liveaboard: Both boats provide similar accommodation, making either a viable choice for 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 · 1984 Dehler 25