Dufour 310 Grand Large vs 1988 Pacific Seacraft 31 — Comparison

Dufour 310 Grand Large
VS
1988 Pacific Seacraft 31

Specifications Side by Side

SpecificationDufour 310 Grand Large1988 Pacific Seacraft 31
General
ManufacturerDufourPacific Seacraft
Year2015–20201988–2007
TypeSloopSloop
CountryFranceUSA
DesignerFelci Yacht DesignWilliam Crealock
Dimensions
LOA9.43 m (30.9 ft)9.45 m (31.0 ft)
LWL8.45 m (27.7 ft)7.62 m (25.0 ft)
Beam3.13 m (10.3 ft)3.05 m (10.0 ft)
Draft1.60 m (5.2 ft)1.37 m (4.5 ft)
Weight
Displacement4,150 kg (9,149 lbs)4,990 kg (11,001 lbs)
Ballast1,230 kg (2,712 lbs)2,177 kg (4,799 lbs)
Sailing
Sail Area40.0 m² (431 ft²)40.5 m² (436 ft²)
Hull MaterialFiberglassFiberglass
Keel TypeFinFull
Engine & Tanks
Engine15 HP25 HP
Fuel Capacity80 L (21.1 gal)76 L (20.1 gal)
Water Capacity120 L (31.7 gal)151 L (39.9 gal)
Accommodation
Berths45
Cabins12

Performance Comparison

SA/D Ratio (Higher = more sail power per displacement)
Dufour 310 Grand Large
15.74
1988 Pacific Seacraft 31
14.09
Ballast Ratio (Higher = more stability)
Dufour 310 Grand Large
29.64
1988 Pacific Seacraft 31
43.63
Capsize Ratio (Lower = safer offshore)
Dufour 310 Grand Large
0.78
1988 Pacific Seacraft 31
0.71
Comfort Ratio (Higher = gentler motion)
Dufour 310 Grand Large
18.25
1988 Pacific Seacraft 31
26.02

Detailed Comparison

The Dufour 310 Grand Large and 1988 Pacific Seacraft 31 represent two takes on sloop-rigged sailing. The Dufour 310 Grand Large is a modern design by Dufour from France, while the 1988 Pacific Seacraft 31 is a 1980s offering from Pacific Seacraft from USA. The Dufour 310 Grand Large was penned by Felci Yacht Design. The 1988 Pacific Seacraft 31 was designed by William Crealock.

In terms of size, the Dufour 310 Grand Large measures 9.43m (30.9ft) overall with a beam of 3.13m, compared to the 1988 Pacific Seacraft 31 at 9.45m (31.0ft) with a 3.05m beam. The 1988 Pacific Seacraft 31 is 0.02m longer than the Dufour 310 Grand Large. The 1988 Pacific Seacraft 31 displaces approximately 20% 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 1988 Pacific Seacraft 31, with an SA/D of 14.09 and 40.5 m² of canvas, offers modest sail power for its displacement. 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 1988 Pacific Seacraft 31 has a comfort ratio of 26.0 and a capsize screening value of 0.71. The ballast ratios are 29.6% for the Dufour 310 Grand Large and 43.6% for the 1988 Pacific Seacraft 31, 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 1988 Pacific Seacraft 31 offers 5 berths in 2 cabins with 151L water and 76L fuel capacity.

Verdict

For cruising: The 1988 Pacific Seacraft 31 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: The 1988 Pacific Seacraft 31 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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