1990 Dehler 31 vs 1974 O'Day 23 — Comparison
1990 Dehler 31
1974 O'Day 23
Specifications Side by Side
| Specification | 1990 Dehler 31 | 1974 O'Day 23 |
|---|---|---|
| General | ||
| Manufacturer | Dehler | O'Day |
| Year | 1990–1996 | 1974–1983 |
| Type | Sloop | Sloop |
| Country | Germany | USA |
| Designer | Judel/Vrolijk | C. Raymond Hunt |
| Dimensions | ||
| LOA | 9.45 m (31.0 ft) | 6.93 m (22.7 ft) |
| LWL | 8.08 m (26.5 ft) | 5.79 m (19.0 ft) |
| Beam | 3.13 m (10.3 ft) | 2.24 m (7.3 ft) |
| Draft | 1.65 m (5.4 ft) | 1.02 m (3.3 ft) |
| Weight | ||
| Displacement | 3,900 kg (8,598 lbs) | 816 kg (1,799 lbs) |
| Ballast | 1,560 kg (3,439 lbs) | 295 kg (650 lbs) |
| Sailing | ||
| Sail Area | 44.0 m² (474 ft²) | 17.5 m² (188 ft²) |
| Hull Material | Fiberglass | Fiberglass |
| Keel Type | Fin | Fin |
| Engine & Tanks | ||
| Engine | 15 HP | 5 HP |
| Fuel Capacity | 60 L (15.9 gal) | 11 L (2.9 gal) |
| Water Capacity | 100 L (26.4 gal) | 15 L (4.0 gal) |
| Accommodation | ||
| Berths | 5 | 4 |
| Cabins | 2 | 1 |
Performance Comparison
Detailed Comparison
The 1990 Dehler 31 and 1974 O'Day 23 represent two takes on sloop-rigged sailing. The 1990 Dehler 31 is a 1990s design by Dehler from Germany, while the 1974 O'Day 23 is a 1970s offering from O'Day from USA. The 1990 Dehler 31 was penned by Judel/Vrolijk. The 1974 O'Day 23 was designed by C. Raymond Hunt.
In terms of size, the 1990 Dehler 31 measures 9.45m (31.0ft) overall with a beam of 3.13m, compared to the 1974 O'Day 23 at 6.93m (22.7ft) with a 2.24m beam. The 1990 Dehler 31 is 2.52m longer than the 1974 O'Day 23. The 1990 Dehler 31 displaces approximately 378% more than its counterpart, which significantly affects how each boat handles in different sea states.
Looking at performance, the 1990 Dehler 31 has good sail power for versatile performance with an SA/D ratio of 18.05 and 44.0 m² of sail area. The 1974 O'Day 23, with an SA/D of 20.38 and 17.5 m² of canvas, offers generous sail power for spirited sailing. The 1974 O'Day 23 has the edge in terms of raw sailing performance.
For comfort and safety, the 1990 Dehler 31 offers a firm, racing-oriented motion (comfort ratio: 18.2) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.80). The 1974 O'Day 23 has a comfort ratio of 11.4 and a capsize screening value of 0.96. The ballast ratios are 40.0% for the 1990 Dehler 31 and 36.2% for the 1974 O'Day 23, reflecting their respective approaches to stability.
Below deck, the 1990 Dehler 31 provides 5 berths in 2 cabins with 100L of water capacity and 60L of fuel. The 1974 O'Day 23 offers 4 berths in 1 cabin with 15L water and 11L fuel capacity.
Verdict
For cruising: The 1990 Dehler 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 1974 O'Day 23 has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.
For liveaboard: The 1990 Dehler 31 offers more sleeping accommodation, making it better suited for extended living aboard. Consider water and fuel capacity for extended stays away from marinas.