1989 J/35 vs 1979 O'Day 28 — Comparison

1989 J/35
VS
1979 O'Day 281979 O'Day 28

Specifications Side by Side

Specification1989 J/351979 O'Day 28
General
ManufacturerJ/BoatsO'Day
Year1989–19931979–1985
TypeSloopSloop
CountryUSAUSA
DesignerRod JohnstoneC. Raymond Hunt
Dimensions
LOA10.67 m (35.0 ft)8.53 m (28.0 ft)
LWL9.14 m (30.0 ft)7.01 m (23.0 ft)
Beam3.43 m (11.3 ft)2.84 m (9.3 ft)
Draft1.98 m (6.5 ft)1.37 m (4.5 ft)
Weight
Displacement5,216 kg (11,499 lbs)2,722 kg (6,001 lbs)
Ballast2,268 kg (5,000 lbs)1,089 kg (2,401 lbs)
Sailing
Sail Area57.6 m² (620 ft²)31.0 m² (334 ft²)
Hull MaterialFiberglassFiberglass
Keel TypeFinFin
Engine & Tanks
Engine18 HP10 HP
Fuel Capacity57 L (15.1 gal)38 L (10.0 gal)
Water Capacity76 L (20.1 gal)57 L (15.1 gal)
Accommodation
Berths65
Cabins21

Performance Comparison

SA/D Ratio (Higher = more sail power per displacement)
1989 J/35
19.46
1979 O'Day 28
16.16
Ballast Ratio (Higher = more stability)
1989 J/35
43.48
1979 O'Day 28
40.01
Capsize Ratio (Lower = safer offshore)
1989 J/35
0.79
1979 O'Day 28
0.81
Comfort Ratio (Higher = gentler motion)
1989 J/35
16.84
1979 O'Day 28
18.69

Detailed Comparison

The 1989 J/35 and 1979 O'Day 28 represent two takes on sloop-rigged sailing. The 1989 J/35 is a 1980s design by J/Boats from USA, while the 1979 O'Day 28 is a 1970s offering from O'Day from USA. The 1989 J/35 was penned by Rod Johnstone. The 1979 O'Day 28 was designed by C. Raymond Hunt.

In terms of size, the 1989 J/35 measures 10.67m (35.0ft) overall with a beam of 3.43m, compared to the 1979 O'Day 28 at 8.53m (28.0ft) with a 2.84m beam. The 1989 J/35 is 2.14m longer than the 1979 O'Day 28. The 1989 J/35 displaces approximately 92% more than its counterpart, which significantly affects how each boat handles in different sea states.

Looking at performance, the 1989 J/35 has good sail power for versatile performance with an SA/D ratio of 19.46 and 57.6 m² of sail area. The 1979 O'Day 28, with an SA/D of 16.16 and 31.0 m² of canvas, offers moderate sail power suitable for relaxed cruising. The 1989 J/35 has the edge in terms of raw sailing performance.

For comfort and safety, the 1989 J/35 offers a firm, racing-oriented motion (comfort ratio: 16.8) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.79). The 1979 O'Day 28 has a comfort ratio of 18.7 and a capsize screening value of 0.81. The ballast ratios are 43.5% for the 1989 J/35 and 40.0% for the 1979 O'Day 28, reflecting their respective approaches to stability.

Below deck, the 1989 J/35 provides 6 berths in 2 cabins with 76L of water capacity and 57L of fuel. The 1979 O'Day 28 offers 5 berths in 1 cabin with 57L water and 38L fuel capacity.

Verdict

For cruising: The 1979 O'Day 28 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 1989 J/35 has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.

For liveaboard: The 1989 J/35 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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