2003 Dufour 34 vs 1984 O'Day 30 — Comparison

2003 Dufour 342003 Dufour 34
VS
1984 O'Day 30

Specifications Side by Side

Specification2003 Dufour 341984 O'Day 30
General
ManufacturerDufourO'Day
Year2003–20071984–1989
TypeSloopSloop
CountryFranceUSA
DesignerUmberto FelciC. Raymond Hunt
Dimensions
LOA10.30 m (33.8 ft)9.14 m (30.0 ft)
LWL8.95 m (29.4 ft)7.62 m (25.0 ft)
Beam3.37 m (11.1 ft)3.05 m (10.0 ft)
Draft1.80 m (5.9 ft)1.52 m (5.0 ft)
Weight
Displacement5,500 kg (12,125 lbs)3,629 kg (8,001 lbs)
Ballast1,800 kg (3,968 lbs)1,452 kg (3,201 lbs)
Sailing
Sail Area52.5 m² (565 ft²)36.0 m² (388 ft²)
Hull MaterialFiberglassFiberglass
Keel TypeFinFin
Engine & Tanks
Engine20 HP13 HP
Fuel Capacity75 L (19.8 gal)57 L (15.1 gal)
Water Capacity140 L (37.0 gal)76 L (20.1 gal)
Accommodation
Berths66
Cabins22

Performance Comparison

SA/D Ratio (Higher = more sail power per displacement)
2003 Dufour 34
17.12
1984 O'Day 30
15.49
Ballast Ratio (Higher = more stability)
2003 Dufour 34
32.73
1984 O'Day 30
40.01
Capsize Ratio (Lower = safer offshore)
2003 Dufour 34
0.76
1984 O'Day 30
0.79
Comfort Ratio (Higher = gentler motion)
2003 Dufour 34
19.14
1984 O'Day 30
19.36

Detailed Comparison

The 2003 Dufour 34 and 1984 O'Day 30 represent two takes on sloop-rigged sailing. The 2003 Dufour 34 is a 2000s design by Dufour from France, while the 1984 O'Day 30 is a 1980s offering from O'Day from USA. The 2003 Dufour 34 was penned by Umberto Felci. The 1984 O'Day 30 was designed by C. Raymond Hunt.

In terms of size, the 2003 Dufour 34 measures 10.30m (33.8ft) overall with a beam of 3.37m, compared to the 1984 O'Day 30 at 9.14m (30.0ft) with a 3.05m beam. The 2003 Dufour 34 is 1.16m longer than the 1984 O'Day 30. The 2003 Dufour 34 displaces approximately 52% more than its counterpart, which significantly affects how each boat handles in different sea states.

Looking at performance, the 2003 Dufour 34 has good sail power for versatile performance with an SA/D ratio of 17.12 and 52.5 m² of sail area. The 1984 O'Day 30, with an SA/D of 15.49 and 36.0 m² of canvas, offers moderate sail power suitable for relaxed cruising. The 2003 Dufour 34 has the edge in terms of raw sailing performance.

For comfort and safety, the 2003 Dufour 34 offers a firm, racing-oriented motion (comfort ratio: 19.1) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.76). The 1984 O'Day 30 has a comfort ratio of 19.4 and a capsize screening value of 0.79. The ballast ratios are 32.7% for the 2003 Dufour 34 and 40.0% for the 1984 O'Day 30, reflecting their respective approaches to stability.

Below deck, the 2003 Dufour 34 provides 6 berths in 2 cabins with 140L of water capacity and 75L of fuel. The 1984 O'Day 30 offers 6 berths in 2 cabins with 76L water and 57L fuel capacity.

Verdict

For cruising: The 1984 O'Day 30 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 2003 Dufour 34 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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