1973 Islander 37 vs 2004 Najad 405 — Comparison

1973 Islander 371973 Islander 37
VS
2004 Najad 405

Specifications Side by Side

Specification1973 Islander 372004 Najad 405
General
ManufacturerIslanderNajad
Year1973–19782004–2012
TypeSloopSloop
CountryUSASweden
DesignerAlan GurneyJudel/Vrolijk
Dimensions
LOA11.28 m (37.0 ft)12.40 m (40.7 ft)
LWL8.69 m (28.5 ft)10.40 m (34.1 ft)
Beam3.28 m (10.8 ft)3.82 m (12.5 ft)
Draft1.68 m (5.5 ft)2.00 m (6.6 ft)
Weight
Displacement6,577 kg (14,500 lbs)9,200 kg (20,283 lbs)
Ballast2,722 kg (6,001 lbs)3,600 kg (7,937 lbs)
Sailing
Sail Area54.5 m² (587 ft²)73.0 m² (786 ft²)
Hull MaterialFiberglassFiberglass
Keel TypeFinFin
Engine & Tanks
Engine22 HP55 HP
Fuel Capacity76 L (20.1 gal)200 L (52.8 gal)
Water Capacity114 L (30.1 gal)350 L (92.5 gal)
Accommodation
Berths67
Cabins23

Performance Comparison

SA/D Ratio (Higher = more sail power per displacement)
1973 Islander 37
15.77
2004 Najad 405
16.89
Ballast Ratio (Higher = more stability)
1973 Islander 37
41.39
2004 Najad 405
39.13
Capsize Ratio (Lower = safer offshore)
1973 Islander 37
0.70
2004 Najad 405
0.73
Comfort Ratio (Higher = gentler motion)
1973 Islander 37
23.18
2004 Najad 405
19.60

Detailed Comparison

The 1973 Islander 37 and 2004 Najad 405 represent two takes on sloop-rigged sailing. The 1973 Islander 37 is a 1970s design by Islander from USA, while the 2004 Najad 405 is a 2000s offering from Najad from Sweden. The 1973 Islander 37 was penned by Alan Gurney. The 2004 Najad 405 was designed by Judel/Vrolijk.

In terms of size, the 1973 Islander 37 measures 11.28m (37.0ft) overall with a beam of 3.28m, compared to the 2004 Najad 405 at 12.40m (40.7ft) with a 3.82m beam. The 2004 Najad 405 is 1.12m longer than the 1973 Islander 37. The 2004 Najad 405 displaces approximately 40% 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 2004 Najad 405, with an SA/D of 16.89 and 73.0 m² of canvas, offers moderate sail power suitable for relaxed cruising. The 2004 Najad 405 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 2004 Najad 405 has a comfort ratio of 19.6 and a capsize screening value of 0.73. The ballast ratios are 41.4% for the 1973 Islander 37 and 39.1% for the 2004 Najad 405, 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 2004 Najad 405 offers 7 berths in 3 cabins with 350L water and 200L 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 2004 Najad 405 has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.

For liveaboard: The 2004 Najad 405 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: 1973 Islander 37 · 2004 Najad 405