1975 S2 9.2C vs 1978 Cape Dory 270 — Comparison

1975 S2 9.2C
VS
1978 Cape Dory 270

Specifications Side by Side

Specification1975 S2 9.2C1978 Cape Dory 270
General
ManufacturerS2Cape Dory
Year1975–19821978–1985
TypeSloopSloop
CountryUSAUSA
DesignerArthur EdmundsCarl Alberg
Dimensions
LOA9.14 m (30.0 ft)8.23 m (27.0 ft)
LWL7.62 m (25.0 ft)6.40 m (21.0 ft)
Beam3.05 m (10.0 ft)2.59 m (8.5 ft)
Draft1.52 m (5.0 ft)1.14 m (3.7 ft)
Weight
Displacement4,082 kg (8,999 lbs)2,722 kg (6,001 lbs)
Ballast1,678 kg (3,699 lbs)1,134 kg (2,500 lbs)
Sailing
Sail Area42.7 m² (460 ft²)28.0 m² (301 ft²)
Hull MaterialFiberglassFiberglass
Keel TypeFinFull
Engine & Tanks
Engine15 HP12 HP
Fuel Capacity57 L (15.1 gal)38 L (10.0 gal)
Water Capacity76 L (20.1 gal)68 L (18.0 gal)
Accommodation
Berths64
Cabins11

Performance Comparison

SA/D Ratio (Higher = more sail power per displacement)
1975 S2 9.2C
16.99
1978 Cape Dory 270
14.60
Ballast Ratio (Higher = more stability)
1975 S2 9.2C
41.11
1978 Cape Dory 270
41.66
Capsize Ratio (Lower = safer offshore)
1975 S2 9.2C
0.76
1978 Cape Dory 270
0.74
Comfort Ratio (Higher = gentler motion)
1975 S2 9.2C
21.78
1978 Cape Dory 270
24.39

Detailed Comparison

The 1975 S2 9.2C and 1978 Cape Dory 270 represent two takes on sloop-rigged sailing. The 1975 S2 9.2C is a 1970s design by S2 from USA, while the 1978 Cape Dory 270 is a 1970s offering from Cape Dory from USA. The 1975 S2 9.2C was penned by Arthur Edmunds. The 1978 Cape Dory 270 was designed by Carl Alberg.

In terms of size, the 1975 S2 9.2C measures 9.14m (30.0ft) overall with a beam of 3.05m, compared to the 1978 Cape Dory 270 at 8.23m (27.0ft) with a 2.59m beam. The 1975 S2 9.2C is 0.91m longer than the 1978 Cape Dory 270. The 1975 S2 9.2C displaces approximately 50% more than its counterpart, which significantly affects how each boat handles in different sea states.

Looking at performance, the 1975 S2 9.2C has moderate sail power suitable for relaxed cruising with an SA/D ratio of 16.99 and 42.7 m² of sail area. The 1978 Cape Dory 270, with an SA/D of 14.60 and 28.0 m² of canvas, offers modest sail power for its displacement. The 1975 S2 9.2C has the edge in terms of raw sailing performance.

For comfort and safety, the 1975 S2 9.2C offers a moderate motion comfort level (comfort ratio: 21.8) and excellent capsize resistance suitable for offshore voyaging (capsize ratio: 0.76). The 1978 Cape Dory 270 has a comfort ratio of 24.4 and a capsize screening value of 0.74. The ballast ratios are 41.1% for the 1975 S2 9.2C and 41.7% for the 1978 Cape Dory 270, reflecting their respective approaches to stability.

Below deck, the 1975 S2 9.2C provides 6 berths in 1 cabin with 76L of water capacity and 57L of fuel. The 1978 Cape Dory 270 offers 4 berths in 1 cabin with 68L water and 38L fuel capacity.

Verdict

For cruising: The 1978 Cape Dory 270 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 S2 9.2C has the performance advantage with its superior SA/D ratio, meaning more sail power relative to its displacement for competitive sailing.

For liveaboard: The 1975 S2 9.2C 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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