1966 Islander 33 vs 1984 Dehler 25 — Comparison

1966 Islander 331966 Islander 33
VS
1984 Dehler 25

Specifications Side by Side

Specification1966 Islander 331984 Dehler 25
General
ManufacturerIslanderDehler
Year1966–19741984–1992
TypeSloopSloop
CountryUSAGermany
DesignerJoseph McGlassonE.G. van de Stadt
Dimensions
LOA10.06 m (33.0 ft)7.50 m (24.6 ft)
LWL7.62 m (25.0 ft)6.30 m (20.7 ft)
Beam2.97 m (9.7 ft)2.50 m (8.2 ft)
Draft1.52 m (5.0 ft)1.35 m (4.4 ft)
Weight
Displacement4,536 kg (10,000 lbs)1,800 kg (3,968 lbs)
Ballast1,814 kg (3,999 lbs)680 kg (1,499 lbs)
Sailing
Sail Area42.0 m² (452 ft²)22.5 m² (242 ft²)
Hull MaterialFiberglassFiberglass
Keel TypeFinFin
Engine & Tanks
Engine15 HP8 HP
Fuel Capacity57 L (15.1 gal)25 L (6.6 gal)
Water Capacity76 L (20.1 gal)40 L (10.6 gal)
Accommodation
Berths64
Cabins21

Performance Comparison

SA/D Ratio (Higher = more sail power per displacement)
1966 Islander 33
15.57
1984 Dehler 25
15.46
Ballast Ratio (Higher = more stability)
1966 Islander 33
39.99
1984 Dehler 25
37.78
Capsize Ratio (Lower = safer offshore)
1966 Islander 33
0.72
1984 Dehler 25
0.82
Comfort Ratio (Higher = gentler motion)
1966 Islander 33
23.44
1984 Dehler 25
18.41

Detailed Comparison

The 1966 Islander 33 and 1984 Dehler 25 represent two takes on sloop-rigged sailing. The 1966 Islander 33 is a classic design by Islander from USA, while the 1984 Dehler 25 is a 1980s offering from Dehler from Germany. The 1966 Islander 33 was penned by Joseph McGlasson. The 1984 Dehler 25 was designed by E.G. van de Stadt.

In terms of size, the 1966 Islander 33 measures 10.06m (33.0ft) overall with a beam of 2.97m, compared to the 1984 Dehler 25 at 7.50m (24.6ft) with a 2.50m beam. The 1966 Islander 33 is 2.56m longer than the 1984 Dehler 25. The 1966 Islander 33 displaces approximately 152% more than its counterpart, which significantly affects how each boat handles in different sea states.

Looking at performance, the 1966 Islander 33 has moderate sail power suitable for relaxed cruising with an SA/D ratio of 15.57 and 42.0 m² of sail area. The 1984 Dehler 25, with an SA/D of 15.46 and 22.5 m² of canvas, offers moderate sail power suitable for relaxed cruising. The 1966 Islander 33 has the edge in terms of raw sailing performance.

For comfort and safety, the 1966 Islander 33 offers a moderate motion comfort level (comfort ratio: 23.4) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.72). The 1984 Dehler 25 has a comfort ratio of 18.4 and a capsize screening value of 0.82. The ballast ratios are 40.0% for the 1966 Islander 33 and 37.8% for the 1984 Dehler 25, reflecting their respective approaches to stability.

Below deck, the 1966 Islander 33 provides 6 berths in 2 cabins with 76L of water capacity and 57L of fuel. The 1984 Dehler 25 offers 4 berths in 1 cabin with 40L water and 25L fuel capacity.

Verdict

For cruising: The 1966 Islander 33 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 1966 Islander 33 has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.

For liveaboard: The 1966 Islander 33 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: 1966 Islander 33 · 1984 Dehler 25