1979 O'Day 25 vs Jeanneau Sun Odyssey 319 — Comparison
1979 O'Day 25
Specifications Side by Side
| Specification | 1979 O'Day 25 | Jeanneau Sun Odyssey 319 |
|---|---|---|
| General | ||
| Manufacturer | O'Day | Jeanneau |
| Year | 1979–1984 | 2019 |
| Type | Sloop | Sloop |
| Country | USA | France |
| Designer | C. Raymond Hunt | Marc Lombard |
| Dimensions | ||
| LOA | 7.62 m (25.0 ft) | 9.80 m (32.2 ft) |
| LWL | 6.25 m (20.5 ft) | 8.75 m (28.7 ft) |
| Beam | 2.74 m (9.0 ft) | 3.19 m (10.5 ft) |
| Draft | 1.07 m (3.5 ft) | 1.60 m (5.2 ft) |
| Weight | ||
| Displacement | 1,769 kg (3,900 lbs) | 4,700 kg (10,362 lbs) |
| Ballast | 726 kg (1,601 lbs) | 1,300 kg (2,866 lbs) |
| Sailing | ||
| Sail Area | 27.2 m² (293 ft²) | 43.0 m² (463 ft²) |
| Hull Material | Fiberglass | Fiberglass |
| Keel Type | Fin | Fin |
| Engine & Tanks | ||
| Engine | 7 HP | 21 HP |
| Fuel Capacity | 30 L (7.9 gal) | 100 L (26.4 gal) |
| Water Capacity | 45 L (11.9 gal) | 150 L (39.6 gal) |
| Accommodation | ||
| Berths | 5 | 6 |
| Cabins | 1 | 1 |
Performance Comparison
Detailed Comparison
The 1979 O'Day 25 and Jeanneau Sun Odyssey 319 represent two takes on sloop-rigged sailing. The 1979 O'Day 25 is a 1970s design by O'Day from USA, while the Jeanneau Sun Odyssey 319 is a modern offering from Jeanneau from France. The 1979 O'Day 25 was penned by C. Raymond Hunt. The Jeanneau Sun Odyssey 319 was designed by Marc Lombard.
In terms of size, the 1979 O'Day 25 measures 7.62m (25.0ft) overall with a beam of 2.74m, compared to the Jeanneau Sun Odyssey 319 at 9.80m (32.2ft) with a 3.19m beam. The Jeanneau Sun Odyssey 319 is 2.18m longer than the 1979 O'Day 25. The Jeanneau Sun Odyssey 319 displaces approximately 166% more than its counterpart, which significantly affects how each boat handles in different sea states.
Looking at performance, the 1979 O'Day 25 has good sail power for versatile performance with an SA/D ratio of 18.90 and 27.2 m² of sail area. The Jeanneau Sun Odyssey 319, with an SA/D of 15.57 and 43.0 m² of canvas, offers moderate sail power suitable for relaxed cruising. The 1979 O'Day 25 has the edge in terms of raw sailing performance.
For comfort and safety, the 1979 O'Day 25 offers a firm, racing-oriented motion (comfort ratio: 16.0) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.91). The Jeanneau Sun Odyssey 319 has a comfort ratio of 18.8 and a capsize screening value of 0.76. The ballast ratios are 41.0% for the 1979 O'Day 25 and 27.7% for the Jeanneau Sun Odyssey 319, reflecting their respective approaches to stability.
Below deck, the 1979 O'Day 25 provides 5 berths in 1 cabin with 45L of water capacity and 30L of fuel. The Jeanneau Sun Odyssey 319 offers 6 berths in 1 cabin with 150L water and 100L fuel capacity.
Verdict
For cruising: The Jeanneau Sun Odyssey 319 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 1979 O'Day 25 has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.
For liveaboard: The Jeanneau Sun Odyssey 319 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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Or view individual specs: 1979 O'Day 25 · Jeanneau Sun Odyssey 319