1973 Islander 37 vs 1984 Cape Dory 33 — Comparison

1973 Islander 371973 Islander 37
VS
1984 Cape Dory 33

Specifications Side by Side

Specification1973 Islander 371984 Cape Dory 33
General
ManufacturerIslanderCape Dory
Year1973–19781984–1990
TypeSloopSloop
CountryUSAUSA
DesignerAlan GurneyCarl Alberg
Dimensions
LOA11.28 m (37.0 ft)10.06 m (33.0 ft)
LWL8.69 m (28.5 ft)7.92 m (26.0 ft)
Beam3.28 m (10.8 ft)3.12 m (10.2 ft)
Draft1.68 m (5.5 ft)1.45 m (4.8 ft)
Weight
Displacement6,577 kg (14,500 lbs)4,990 kg (11,001 lbs)
Ballast2,722 kg (6,001 lbs)2,177 kg (4,799 lbs)
Sailing
Sail Area54.5 m² (587 ft²)44.0 m² (474 ft²)
Hull MaterialFiberglassFiberglass
Keel TypeFinFull
Engine & Tanks
Engine22 HP22 HP
Fuel Capacity76 L (20.1 gal)76 L (20.1 gal)
Water Capacity114 L (30.1 gal)151 L (39.9 gal)
Accommodation
Berths65
Cabins22

Performance Comparison

SA/D Ratio (Higher = more sail power per displacement)
1973 Islander 37
15.77
1984 Cape Dory 33
15.31
Ballast Ratio (Higher = more stability)
1973 Islander 37
41.39
1984 Cape Dory 33
43.63
Capsize Ratio (Lower = safer offshore)
1973 Islander 37
0.70
1984 Cape Dory 33
0.73
Comfort Ratio (Higher = gentler motion)
1973 Islander 37
23.18
1984 Cape Dory 33
22.98

Detailed Comparison

The 1973 Islander 37 and 1984 Cape Dory 33 represent two takes on sloop-rigged sailing. The 1973 Islander 37 is a 1970s design by Islander from USA, while the 1984 Cape Dory 33 is a 1980s offering from Cape Dory from USA. The 1973 Islander 37 was penned by Alan Gurney. The 1984 Cape Dory 33 was designed by Carl Alberg.

In terms of size, the 1973 Islander 37 measures 11.28m (37.0ft) overall with a beam of 3.28m, compared to the 1984 Cape Dory 33 at 10.06m (33.0ft) with a 3.12m beam. The 1973 Islander 37 is 1.22m longer than the 1984 Cape Dory 33. The 1973 Islander 37 displaces approximately 32% 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 1984 Cape Dory 33, with an SA/D of 15.31 and 44.0 m² of canvas, offers moderate sail power suitable for relaxed cruising. The 1973 Islander 37 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 1984 Cape Dory 33 has a comfort ratio of 23.0 and a capsize screening value of 0.73. The ballast ratios are 41.4% for the 1973 Islander 37 and 43.6% for the 1984 Cape Dory 33, 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 1984 Cape Dory 33 offers 5 berths in 2 cabins with 151L water and 76L 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 1973 Islander 37 has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.

For liveaboard: The 1973 Islander 37 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 · 1984 Cape Dory 33