1977 Westerly Centaur vs 1975 Cal 29 — Comparison

1977 Westerly Centaur
VS
1975 Cal 29

Specifications Side by Side

Specification1977 Westerly Centaur1975 Cal 29
General
ManufacturerWesterlyCal
Year1977–19811975–1981
TypeSloopSloop
CountryUKUSA
DesignerLaurent GilesBill Lapworth
Dimensions
LOA7.92 m (26.0 ft)8.84 m (29.0 ft)
LWL6.40 m (21.0 ft)7.32 m (24.0 ft)
Beam2.69 m (8.8 ft)2.84 m (9.3 ft)
Draft1.07 m (3.5 ft)1.37 m (4.5 ft)
Weight
Displacement2,722 kg (6,001 lbs)3,175 kg (7,000 lbs)
Ballast1,089 kg (2,401 lbs)1,361 kg (3,000 lbs)
Sailing
Sail Area26.9 m² (290 ft²)34.0 m² (366 ft²)
Hull MaterialFiberglassFiberglass
Keel TypeBilgeFin
Engine & Tanks
Engine13 HP13 HP
Fuel Capacity45 L (11.9 gal)45 L (11.9 gal)
Water Capacity68 L (18.0 gal)76 L (20.1 gal)
Accommodation
Berths55
Cabins21

Performance Comparison

SA/D Ratio (Higher = more sail power per displacement)
1977 Westerly Centaur
14.02
1975 Cal 29
15.99
Ballast Ratio (Higher = more stability)
1977 Westerly Centaur
40.01
1975 Cal 29
42.87
Capsize Ratio (Lower = safer offshore)
1977 Westerly Centaur
0.77
1975 Cal 29
0.77
Comfort Ratio (Higher = gentler motion)
1977 Westerly Centaur
23.82
1975 Cal 29
20.09

Detailed Comparison

The 1977 Westerly Centaur and 1975 Cal 29 represent two takes on sloop-rigged sailing. The 1977 Westerly Centaur is a 1970s design by Westerly from UK, while the 1975 Cal 29 is a 1970s offering from Cal from USA. The 1977 Westerly Centaur was penned by Laurent Giles. The 1975 Cal 29 was designed by Bill Lapworth.

In terms of size, the 1977 Westerly Centaur measures 7.92m (26.0ft) overall with a beam of 2.69m, compared to the 1975 Cal 29 at 8.84m (29.0ft) with a 2.84m beam. The 1975 Cal 29 is 0.92m longer than the 1977 Westerly Centaur. The 1975 Cal 29 displaces approximately 17% more than its counterpart, which significantly affects how each boat handles in different sea states.

Looking at performance, the 1977 Westerly Centaur has modest sail power for its displacement with an SA/D ratio of 14.02 and 26.9 m² of sail area. The 1975 Cal 29, with an SA/D of 15.99 and 34.0 m² of canvas, offers moderate sail power suitable for relaxed cruising. The 1975 Cal 29 has the edge in terms of raw sailing performance.

For comfort and safety, the 1977 Westerly Centaur offers a moderate motion comfort level (comfort ratio: 23.8) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.77). The 1975 Cal 29 has a comfort ratio of 20.1 and a capsize screening value of 0.77. The ballast ratios are 40.0% for the 1977 Westerly Centaur and 42.9% for the 1975 Cal 29, reflecting their respective approaches to stability.

Below deck, the 1977 Westerly Centaur provides 5 berths in 2 cabins with 68L of water capacity and 45L of fuel. The 1975 Cal 29 offers 5 berths in 1 cabin with 76L water and 45L fuel capacity.

Verdict

For cruising: The 1977 Westerly Centaur 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 1975 Cal 29 has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.

For liveaboard: Both boats provide similar accommodation, making either a viable choice for living aboard. Consider water and fuel capacity for extended stays away from marinas.

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