1979 Irwin 25 vs Hanse 315 — Comparison
1979 Irwin 25
Specifications Side by Side
| Specification | 1979 Irwin 25 | Hanse 315 |
|---|---|---|
| General | ||
| Manufacturer | Irwin | Hanse |
| Year | 1979–1984 | 2010–2016 |
| Type | Sloop | Sloop |
| Country | USA | Germany |
| Designer | Ted Irwin | judel/vrolijk & co |
| Dimensions | ||
| LOA | 7.62 m (25.0 ft) | 9.65 m (31.7 ft) |
| LWL | 6.10 m (20.0 ft) | 8.55 m (28.1 ft) |
| Beam | 2.59 m (8.5 ft) | 3.15 m (10.3 ft) |
| Draft | 1.14 m (3.7 ft) | 1.65 m (5.4 ft) |
| Weight | ||
| Displacement | 2,041 kg (4,500 lbs) | 4,200 kg (9,259 lbs) |
| Ballast | 816 kg (1,799 lbs) | 1,200 kg (2,646 lbs) |
| Sailing | ||
| Sail Area | 25.8 m² (278 ft²) | 41.5 m² (447 ft²) |
| Hull Material | Fiberglass | Fiberglass |
| Keel Type | Fin | Fin |
| Engine & Tanks | ||
| Engine | 10 HP | 15 HP |
| Fuel Capacity | 30 L (7.9 gal) | 85 L (22.5 gal) |
| Water Capacity | 38 L (10.0 gal) | 120 L (31.7 gal) |
| Accommodation | ||
| Berths | 5 | 4 |
| Cabins | 1 | 1 |
Performance Comparison
Detailed Comparison
The 1979 Irwin 25 and Hanse 315 represent two takes on sloop-rigged sailing. The 1979 Irwin 25 is a 1970s design by Irwin from USA, while the Hanse 315 is a modern offering from Hanse from Germany. The 1979 Irwin 25 was penned by Ted Irwin. The Hanse 315 was designed by judel/vrolijk & co.
In terms of size, the 1979 Irwin 25 measures 7.62m (25.0ft) overall with a beam of 2.59m, compared to the Hanse 315 at 9.65m (31.7ft) with a 3.15m beam. The Hanse 315 is 2.03m longer than the 1979 Irwin 25. The Hanse 315 displaces approximately 106% more than its counterpart, which significantly affects how each boat handles in different sea states.
Looking at performance, the 1979 Irwin 25 has moderate sail power suitable for relaxed cruising with an SA/D ratio of 16.30 and 25.8 m² of sail area. The Hanse 315, with an SA/D of 16.20 and 41.5 m² of canvas, offers moderate sail power suitable for relaxed cruising. The 1979 Irwin 25 has the edge in terms of raw sailing performance.
For comfort and safety, the 1979 Irwin 25 offers a moderate motion comfort level (comfort ratio: 20.6) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.82). The Hanse 315 has a comfort ratio of 17.8 and a capsize screening value of 0.78. The ballast ratios are 40.0% for the 1979 Irwin 25 and 28.6% for the Hanse 315, reflecting their respective approaches to stability.
Below deck, the 1979 Irwin 25 provides 5 berths in 1 cabin with 38L of water capacity and 30L of fuel. The Hanse 315 offers 4 berths in 1 cabin with 120L water and 85L fuel capacity.
Verdict
For cruising: The 1979 Irwin 25 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 1979 Irwin 25 has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.
For liveaboard: The 1979 Irwin 25 offers more sleeping accommodation, making it better suited for extended living aboard. Consider water and fuel capacity for extended stays away from marinas.
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Or view individual specs: 1979 Irwin 25 · Hanse 315