1972 Islander 24 vs 1975 Cal 29 — Comparison
1972 Islander 24
1975 Cal 29
Specifications Side by Side
| Specification | 1972 Islander 24 | 1975 Cal 29 |
|---|---|---|
| General | ||
| Manufacturer | Islander | Cal |
| Year | 1972–1977 | 1975–1981 |
| Type | Sloop | Sloop |
| Country | USA | USA |
| Designer | Alan Gurney | Bill Lapworth |
| Dimensions | ||
| LOA | 7.32 m (24.0 ft) | 8.84 m (29.0 ft) |
| LWL | 5.94 m (19.5 ft) | 7.32 m (24.0 ft) |
| Beam | 2.36 m (7.7 ft) | 2.84 m (9.3 ft) |
| Draft | 1.14 m (3.7 ft) | 1.37 m (4.5 ft) |
| Weight | ||
| Displacement | 1,588 kg (3,501 lbs) | 3,175 kg (7,000 lbs) |
| Ballast | 635 kg (1,400 lbs) | 1,361 kg (3,000 lbs) |
| Sailing | ||
| Sail Area | 23.5 m² (253 ft²) | 34.0 m² (366 ft²) |
| Hull Material | Fiberglass | Fiberglass |
| Keel Type | Fin | Fin |
| Engine & Tanks | ||
| Engine | 7 HP | 13 HP |
| Fuel Capacity | 23 L (6.1 gal) | 45 L (11.9 gal) |
| Water Capacity | 38 L (10.0 gal) | 76 L (20.1 gal) |
| Accommodation | ||
| Berths | 4 | 5 |
| Cabins | 1 | 1 |
Performance Comparison
Detailed Comparison
The 1972 Islander 24 and 1975 Cal 29 represent two takes on sloop-rigged sailing. The 1972 Islander 24 is a 1970s design by Islander from USA, while the 1975 Cal 29 is a 1970s offering from Cal from USA. The 1972 Islander 24 was penned by Alan Gurney. The 1975 Cal 29 was designed by Bill Lapworth.
In terms of size, the 1972 Islander 24 measures 7.32m (24.0ft) overall with a beam of 2.36m, compared to the 1975 Cal 29 at 8.84m (29.0ft) with a 2.84m beam. The 1975 Cal 29 is 1.52m longer than the 1972 Islander 24. The 1975 Cal 29 displaces approximately 100% more than its counterpart, which significantly affects how each boat handles in different sea states.
Looking at performance, the 1972 Islander 24 has good sail power for versatile performance with an SA/D ratio of 17.55 and 23.5 m² of sail area. The 1975 Cal 29, with an SA/D of 15.99 and 34.0 m² of canvas, offers moderate sail power suitable for relaxed cruising. The 1972 Islander 24 has the edge in terms of raw sailing performance.
For comfort and safety, the 1972 Islander 24 offers a firm, racing-oriented motion (comfort ratio: 19.3) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.81). The 1975 Cal 29 has a comfort ratio of 20.1 and a capsize screening value of 0.77. The ballast ratios are 40.0% for the 1972 Islander 24 and 42.9% for the 1975 Cal 29, reflecting their respective approaches to stability.
Below deck, the 1972 Islander 24 provides 4 berths in 1 cabin with 38L of water capacity and 23L of fuel. The 1975 Cal 29 offers 5 berths in 1 cabin with 76L water and 45L fuel capacity.
Verdict
For cruising: The 1975 Cal 29 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 Islander 24 has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.
For liveaboard: The 1975 Cal 29 offers more sleeping accommodation, making it better suited for extended living aboard. Consider water and fuel capacity for extended stays away from marinas.