1997 Dufour 30 Classic vs 1983 Pearson 31 — Comparison

1997 Dufour 30 Classic
VS
1983 Pearson 311983 Pearson 31

Specifications Side by Side

Specification1997 Dufour 30 Classic1983 Pearson 31
General
ManufacturerDufourPearson
Year1997–20031983–1990
TypeSloopSloop
CountryFranceUSA
DesignerUmberto FelciWilliam Shaw
Dimensions
LOA9.15 m (30.0 ft)9.45 m (31.0 ft)
LWL7.80 m (25.6 ft)7.77 m (25.5 ft)
Beam3.10 m (10.2 ft)3.10 m (10.2 ft)
Draft1.60 m (5.2 ft)1.52 m (5.0 ft)
Weight
Displacement3,800 kg (8,378 lbs)4,309 kg (9,500 lbs)
Ballast1,400 kg (3,086 lbs)1,814 kg (3,999 lbs)
Sailing
Sail Area40.0 m² (431 ft²)40.0 m² (431 ft²)
Hull MaterialFiberglassFiberglass
Keel TypeFinFin
Engine & Tanks
Engine15 HP18 HP
Fuel Capacity50 L (13.2 gal)68 L (18.0 gal)
Water Capacity90 L (23.8 gal)114 L (30.1 gal)
Accommodation
Berths56
Cabins22

Performance Comparison

SA/D Ratio (Higher = more sail power per displacement)
1997 Dufour 30 Classic
16.69
1983 Pearson 31
15.35
Ballast Ratio (Higher = more stability)
1997 Dufour 30 Classic
36.84
1983 Pearson 31
42.10
Capsize Ratio (Lower = safer offshore)
1997 Dufour 30 Classic
0.80
1983 Pearson 31
0.76
Comfort Ratio (Higher = gentler motion)
1997 Dufour 30 Classic
19.22
1983 Pearson 31
21.43

Detailed Comparison

The 1997 Dufour 30 Classic and 1983 Pearson 31 represent two takes on sloop-rigged sailing. The 1997 Dufour 30 Classic is a 1990s design by Dufour from France, while the 1983 Pearson 31 is a 1980s offering from Pearson from USA. The 1997 Dufour 30 Classic was penned by Umberto Felci. The 1983 Pearson 31 was designed by William Shaw.

In terms of size, the 1997 Dufour 30 Classic measures 9.15m (30.0ft) overall with a beam of 3.10m, compared to the 1983 Pearson 31 at 9.45m (31.0ft) with a 3.10m beam. The 1983 Pearson 31 is 0.30m longer than the 1997 Dufour 30 Classic. The 1983 Pearson 31 displaces approximately 13% more than its counterpart, which significantly affects how each boat handles in different sea states.

Looking at performance, the 1997 Dufour 30 Classic has moderate sail power suitable for relaxed cruising with an SA/D ratio of 16.69 and 40.0 m² of sail area. The 1983 Pearson 31, with an SA/D of 15.35 and 40.0 m² of canvas, offers moderate sail power suitable for relaxed cruising. The 1997 Dufour 30 Classic has the edge in terms of raw sailing performance.

For comfort and safety, the 1997 Dufour 30 Classic offers a firm, racing-oriented motion (comfort ratio: 19.2) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.80). The 1983 Pearson 31 has a comfort ratio of 21.4 and a capsize screening value of 0.76. The ballast ratios are 36.8% for the 1997 Dufour 30 Classic and 42.1% for the 1983 Pearson 31, reflecting their respective approaches to stability.

Below deck, the 1997 Dufour 30 Classic provides 5 berths in 2 cabins with 90L of water capacity and 50L of fuel. The 1983 Pearson 31 offers 6 berths in 2 cabins with 114L water and 68L fuel capacity.

Verdict

For cruising: The 1983 Pearson 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 1997 Dufour 30 Classic has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.

For liveaboard: The 1983 Pearson 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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