1989 J/35 vs 1984 O'Day 30 — Comparison
Specifications Side by Side
| Specification | 1989 J/35 | 1984 O'Day 30 |
|---|---|---|
| General | ||
| Manufacturer | J/Boats | O'Day |
| Year | 1989–1993 | 1984–1989 |
| Type | Sloop | Sloop |
| Country | USA | USA |
| Designer | Rod Johnstone | C. Raymond Hunt |
| Dimensions | ||
| LOA | 10.67 m (35.0 ft) | 9.14 m (30.0 ft) |
| LWL | 9.14 m (30.0 ft) | 7.62 m (25.0 ft) |
| Beam | 3.43 m (11.3 ft) | 3.05 m (10.0 ft) |
| Draft | 1.98 m (6.5 ft) | 1.52 m (5.0 ft) |
| Weight | ||
| Displacement | 5,216 kg (11,499 lbs) | 3,629 kg (8,001 lbs) |
| Ballast | 2,268 kg (5,000 lbs) | 1,452 kg (3,201 lbs) |
| Sailing | ||
| Sail Area | 57.6 m² (620 ft²) | 36.0 m² (388 ft²) |
| Hull Material | Fiberglass | Fiberglass |
| Keel Type | Fin | Fin |
| Engine & Tanks | ||
| Engine | 18 HP | 13 HP |
| Fuel Capacity | 57 L (15.1 gal) | 57 L (15.1 gal) |
| Water Capacity | 76 L (20.1 gal) | 76 L (20.1 gal) |
| Accommodation | ||
| Berths | 6 | 6 |
| Cabins | 2 | 2 |
Performance Comparison
Detailed Comparison
The 1989 J/35 and 1984 O'Day 30 represent two takes on sloop-rigged sailing. The 1989 J/35 is a 1980s design by J/Boats from USA, while the 1984 O'Day 30 is a 1980s offering from O'Day from USA. The 1989 J/35 was penned by Rod Johnstone. The 1984 O'Day 30 was designed by C. Raymond Hunt.
In terms of size, the 1989 J/35 measures 10.67m (35.0ft) overall with a beam of 3.43m, compared to the 1984 O'Day 30 at 9.14m (30.0ft) with a 3.05m beam. The 1989 J/35 is 1.53m longer than the 1984 O'Day 30. The 1989 J/35 displaces approximately 44% more than its counterpart, which significantly affects how each boat handles in different sea states.
Looking at performance, the 1989 J/35 has good sail power for versatile performance with an SA/D ratio of 19.46 and 57.6 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 1989 J/35 has the edge in terms of raw sailing performance.
For comfort and safety, the 1989 J/35 offers a firm, racing-oriented motion (comfort ratio: 16.8) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.79). The 1984 O'Day 30 has a comfort ratio of 19.4 and a capsize screening value of 0.79. The ballast ratios are 43.5% for the 1989 J/35 and 40.0% for the 1984 O'Day 30, reflecting their respective approaches to stability.
Below deck, the 1989 J/35 provides 6 berths in 2 cabins with 76L of water capacity and 57L 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 1989 J/35 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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Or view individual specs: 1989 J/35 · 1984 O'Day 30