1972 Contest 31 vs 1977 Cal 33 — Comparison
1972 Contest 31
1977 Cal 33
Specifications Side by Side
| Specification | 1972 Contest 31 | 1977 Cal 33 |
|---|---|---|
| General | ||
| Manufacturer | Contest | Cal |
| Year | 1972–1982 | 1977–1982 |
| Type | Sloop | Sloop |
| Country | Netherlands | USA |
| Designer | Dick Zaal | Bill Lapworth / C. Raymond Hunt |
| Dimensions | ||
| LOA | 9.45 m (31.0 ft) | 10.06 m (33.0 ft) |
| LWL | 7.62 m (25.0 ft) | 8.08 m (26.5 ft) |
| Beam | 3.05 m (10.0 ft) | 3.20 m (10.5 ft) |
| Draft | 1.52 m (5.0 ft) | 1.60 m (5.2 ft) |
| Weight | ||
| Displacement | 4,536 kg (10,000 lbs) | 5,216 kg (11,499 lbs) |
| Ballast | 1,814 kg (3,999 lbs) | 2,177 kg (4,799 lbs) |
| Sailing | ||
| Sail Area | 39.5 m² (425 ft²) | 43.0 m² (463 ft²) |
| Hull Material | Steel | Fiberglass |
| Keel Type | Fin | Fin |
| Engine & Tanks | ||
| Engine | 18 HP | 18 HP |
| Fuel Capacity | 80 L (21.1 gal) | 68 L (18.0 gal) |
| Water Capacity | 150 L (39.6 gal) | 114 L (30.1 gal) |
| Accommodation | ||
| Berths | 5 | 6 |
| Cabins | 2 | 2 |
Performance Comparison
Detailed Comparison
The 1972 Contest 31 and 1977 Cal 33 represent two takes on sloop-rigged sailing. The 1972 Contest 31 is a 1970s design by Contest from Netherlands, while the 1977 Cal 33 is a 1970s offering from Cal from USA. The 1972 Contest 31 was penned by Dick Zaal. The 1977 Cal 33 was designed by Bill Lapworth / C. Raymond Hunt.
In terms of size, the 1972 Contest 31 measures 9.45m (31.0ft) overall with a beam of 3.05m, compared to the 1977 Cal 33 at 10.06m (33.0ft) with a 3.20m beam. The 1977 Cal 33 is 0.61m longer than the 1972 Contest 31. The 1977 Cal 33 displaces approximately 15% more than its counterpart, which significantly affects how each boat handles in different sea states.
Looking at performance, the 1972 Contest 31 has modest sail power for its displacement with an SA/D ratio of 14.65 and 39.5 m² of sail area. The 1977 Cal 33, with an SA/D of 14.53 and 43.0 m² of canvas, offers modest sail power for its displacement. The 1972 Contest 31 has the edge in terms of raw sailing performance.
For comfort and safety, the 1972 Contest 31 offers a moderate motion comfort level (comfort ratio: 23.7) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.74). The 1977 Cal 33 has a comfort ratio of 22.6 and a capsize screening value of 0.74. The ballast ratios are 40.0% for the 1972 Contest 31 and 41.7% for the 1977 Cal 33, reflecting their respective approaches to stability.
Below deck, the 1972 Contest 31 provides 5 berths in 2 cabins with 150L of water capacity and 80L of fuel. The 1977 Cal 33 offers 6 berths in 2 cabins with 114L water and 68L fuel capacity.
Verdict
For cruising: The 1972 Contest 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 1972 Contest 31 has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.
For liveaboard: The 1977 Cal 33 offers more sleeping accommodation, making it better suited for extended living aboard. Consider water and fuel capacity for extended stays away from marinas.