2003 Catalina 310 vs 1984 O'Day 30 — Comparison
2003 Catalina 310
Specifications Side by Side
| Specification | 2003 Catalina 310 | 1984 O'Day 30 |
|---|---|---|
| General | ||
| Manufacturer | Catalina | O'Day |
| Year | 2003–2007 | 1984–1989 |
| Type | Sloop | Sloop |
| Country | USA | USA |
| Designer | Gerry Douglas | C. Raymond Hunt |
| Dimensions | ||
| LOA | 9.45 m (31.0 ft) | 9.14 m (30.0 ft) |
| LWL | 8.38 m (27.5 ft) | 7.62 m (25.0 ft) |
| Beam | 3.30 m (10.8 ft) | 3.05 m (10.0 ft) |
| Draft | 1.52 m (5.0 ft) | 1.52 m (5.0 ft) |
| Weight | ||
| Displacement | 4,536 kg (10,000 lbs) | 3,629 kg (8,001 lbs) |
| Ballast | 1,814 kg (3,999 lbs) | 1,452 kg (3,201 lbs) |
| Sailing | ||
| Sail Area | 45.3 m² (488 ft²) | 36.0 m² (388 ft²) |
| Hull Material | Fiberglass | Fiberglass |
| Keel Type | Fin | Fin |
| Engine & Tanks | ||
| Engine | 18 HP | 13 HP |
| Fuel Capacity | 76 L (20.1 gal) | 57 L (15.1 gal) |
| Water Capacity | 114 L (30.1 gal) | 76 L (20.1 gal) |
| Accommodation | ||
| Berths | 6 | 6 |
| Cabins | 2 | 2 |
Performance Comparison
Detailed Comparison
The 2003 Catalina 310 and 1984 O'Day 30 represent two takes on sloop-rigged sailing. The 2003 Catalina 310 is a 2000s design by Catalina from USA, while the 1984 O'Day 30 is a 1980s offering from O'Day from USA. The 2003 Catalina 310 was penned by Gerry Douglas. The 1984 O'Day 30 was designed by C. Raymond Hunt.
In terms of size, the 2003 Catalina 310 measures 9.45m (31.0ft) overall with a beam of 3.30m, compared to the 1984 O'Day 30 at 9.14m (30.0ft) with a 3.05m beam. The 2003 Catalina 310 is 0.31m longer than the 1984 O'Day 30. The 2003 Catalina 310 displaces approximately 25% more than its counterpart, which significantly affects how each boat handles in different sea states.
Looking at performance, the 2003 Catalina 310 has moderate sail power suitable for relaxed cruising with an SA/D ratio of 16.80 and 45.3 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 Catalina 310 has the edge in terms of raw sailing performance.
For comfort and safety, the 2003 Catalina 310 offers a firm, racing-oriented motion (comfort ratio: 18.8) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.80). The 1984 O'Day 30 has a comfort ratio of 19.4 and a capsize screening value of 0.79. The ballast ratios are 40.0% for the 2003 Catalina 310 and 40.0% for the 1984 O'Day 30, reflecting their respective approaches to stability.
Below deck, the 2003 Catalina 310 provides 6 berths in 2 cabins with 114L of water capacity and 76L 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 Catalina 310 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: 2003 Catalina 310 · 1984 O'Day 30