1979 Islander 36 vs 1972 Contest 31 — Comparison

1979 Islander 36 1979 Islander 36
VS
1972 Contest 31 1972 Contest 31

Specifications Side by Side

Specification 1979 Islander 36 1972 Contest 31
General
Manufacturer Islander Contest
Year 1979–1985 1972–1982
Type Sloop Sloop
Country USA Netherlands
Designer Alan Gurney Dick Zaal
Dimensions
LOA 10.97 m (36.0 ft) 9.45 m (31.0 ft)
LWL 8.84 m (29.0 ft) 7.62 m (25.0 ft)
Beam 3.28 m (10.8 ft) 3.05 m (10.0 ft)
Draft 1.68 m (5.5 ft) 1.52 m (5.0 ft)
Weight
Displacement 6,350 kg (13,999 lbs) 4,536 kg (10,000 lbs)
Ballast 2,722 kg (6,001 lbs) 1,814 kg (3,999 lbs)
Sailing
Sail Area 54.2 m² (583 ft²) 39.5 m² (425 ft²)
Hull Material Fiberglass Steel
Keel Type Fin Fin
Engine & Tanks
Engine 22 HP 18 HP
Fuel Capacity 76 L (20.1 gal) 80 L (21.1 gal)
Water Capacity 151 L (39.9 gal) 150 L (39.6 gal)
Accommodation
Berths 7 5
Cabins 2 2

Performance Comparison

SA/D Ratio (Higher = more sail power per displacement)
1979 Islander 36
16.06
1972 Contest 31
14.65
Ballast Ratio (Higher = more stability)
1979 Islander 36
42.87
1972 Contest 31
39.99
Capsize Ratio (Lower = safer offshore)
1979 Islander 36
0.71
1972 Contest 31
0.74
Comfort Ratio (Higher = gentler motion)
1979 Islander 36
22.32
1972 Contest 31
23.65

Detailed Comparison

The 1979 Islander 36 and 1972 Contest 31 represent two takes on sloop-rigged sailing. The 1979 Islander 36 is a 1970s design by Islander from USA, while the 1972 Contest 31 is a 1970s offering from Contest from Netherlands. The 1979 Islander 36 was penned by Alan Gurney. The 1972 Contest 31 was designed by Dick Zaal.

In terms of size, the 1979 Islander 36 measures 10.97m (36.0ft) overall with a beam of 3.28m, compared to the 1972 Contest 31 at 9.45m (31.0ft) with a 3.05m beam. The 1979 Islander 36 is 1.52m longer than the 1972 Contest 31. The 1979 Islander 36 displaces approximately 40% more than its counterpart, which significantly affects how each boat handles in different sea states.

Looking at performance, the 1979 Islander 36 has moderate sail power suitable for relaxed cruising with an SA/D ratio of 16.06 and 54.2 m² of sail area. The 1972 Contest 31, with an SA/D of 14.65 and 39.5 m² of canvas, offers modest sail power for its displacement. The 1979 Islander 36 has the edge in terms of raw sailing performance.

For comfort and safety, the 1979 Islander 36 offers a moderate motion comfort level (comfort ratio: 22.3) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.71). The 1972 Contest 31 has a comfort ratio of 23.7 and a capsize screening value of 0.74. The ballast ratios are 42.9% for the 1979 Islander 36 and 40.0% for the 1972 Contest 31, reflecting their respective approaches to stability.

Below deck, the 1979 Islander 36 provides 7 berths in 2 cabins with 151L of water capacity and 76L of fuel. The 1972 Contest 31 offers 5 berths in 2 cabins with 150L water and 80L fuel capacity.

Verdict

For cruising: The 1972 Contest 31 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 Islander 36 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 Islander 36 offers more sleeping accommodation, making it better suited for extended living aboard. Consider water and fuel capacity for extended stays away from marinas.

Compare Different Boats

VS