1973 Islander 37 vs Dufour 365 Grand Large — Comparison
1973 Islander 37
Dufour 365 Grand Large
Specifications Side by Side
| Specification | 1973 Islander 37 | Dufour 365 Grand Large |
|---|---|---|
| General | ||
| Manufacturer | Islander | Dufour |
| Year | 1973–1978 | 2003–2007 |
| Type | Sloop | Sloop |
| Country | USA | France |
| Designer | Alan Gurney | Umberto Felci |
| Dimensions | ||
| LOA | 11.28 m (37.0 ft) | 10.97 m (36.0 ft) |
| LWL | 8.69 m (28.5 ft) | 9.72 m (31.9 ft) |
| Beam | 3.28 m (10.8 ft) | 3.52 m (11.5 ft) |
| Draft | 1.68 m (5.5 ft) | 1.80 m (5.9 ft) |
| Weight | ||
| Displacement | 6,577 kg (14,500 lbs) | 6,100 kg (13,448 lbs) |
| Ballast | 2,722 kg (6,001 lbs) | 1,850 kg (4,079 lbs) |
| Sailing | ||
| Sail Area | 54.5 m² (587 ft²) | 57.5 m² (619 ft²) |
| Hull Material | Fiberglass | Fiberglass |
| Keel Type | Fin | Fin |
| Engine & Tanks | ||
| Engine | 22 HP | 21 HP |
| Fuel Capacity | 76 L (20.1 gal) | 120 L (31.7 gal) |
| Water Capacity | 114 L (30.1 gal) | 210 L (55.5 gal) |
| Accommodation | ||
| Berths | 6 | 6 |
| Cabins | 2 | 2 |
Performance Comparison
Detailed Comparison
The 1973 Islander 37 and Dufour 365 Grand Large represent two takes on sloop-rigged sailing. The 1973 Islander 37 is a 1970s design by Islander from USA, while the Dufour 365 Grand Large is a 2000s offering from Dufour from France. The 1973 Islander 37 was penned by Alan Gurney. The Dufour 365 Grand Large was designed by Umberto Felci.
In terms of size, the 1973 Islander 37 measures 11.28m (37.0ft) overall with a beam of 3.28m, compared to the Dufour 365 Grand Large at 10.97m (36.0ft) with a 3.52m beam. The 1973 Islander 37 is 0.31m longer than the Dufour 365 Grand Large. The 1973 Islander 37 displaces approximately 8% more than its counterpart, which significantly affects how each boat handles in different sea states.
Looking at performance, the 1973 Islander 37 has moderate sail power suitable for relaxed cruising with an SA/D ratio of 15.77 and 54.5 m² of sail area. The Dufour 365 Grand Large, with an SA/D of 17.50 and 57.5 m² of canvas, offers good sail power for versatile performance. The Dufour 365 Grand Large has the edge in terms of raw sailing performance.
For comfort and safety, the 1973 Islander 37 offers a moderate motion comfort level (comfort ratio: 23.2) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.70). The Dufour 365 Grand Large has a comfort ratio of 17.2 and a capsize screening value of 0.77. The ballast ratios are 41.4% for the 1973 Islander 37 and 30.3% for the Dufour 365 Grand Large, reflecting their respective approaches to stability.
Below deck, the 1973 Islander 37 provides 6 berths in 2 cabins with 114L of water capacity and 76L of fuel. The Dufour 365 Grand Large offers 6 berths in 2 cabins with 210L water and 120L fuel capacity.
Verdict
For cruising: The 1973 Islander 37 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 Dufour 365 Grand Large 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.