Cygnus 20 vs Nonsuch 324
How do the Cygnus 20 and Nonsuch 324 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Cygnus 20 
Nonsuch 324 | Cygnus 20 | Nonsuch 324 | |
|---|---|---|
| Length overall | 20.0 ft6.10 m | 32.3 ft9.85 m |
| Waterline length | 17.5 ft5.33 m | 28.8 ft8.76 m |
| Beam | 7.0 ft2.13 m | 11.8 ft3.61 m |
| Draft | 2.8 ft0.84 m | 4.3 ft1.32 m |
| Displacement | 950 lb431 kg | 11,500 lb5,216 kg |
| Ballast | 140 lb64 kg | 4,240 lb1,923 kg |
| Sail area | 178 ft²16.5 m² | 689 ft²64.0 m² |
| SA / Displacement | 29.47 | 21.64 |
| Displacement / Length | 79 | 216 |
| Comfort ratio | 6.0 | 22.2 |
| Capsize screening | 2.85 | 2.10 |
| Hull speed (kn) | 5.6 | 7.2 |
Cygnus 20 vs Nonsuch 324: the short version
- The Nonsuch 324 is the larger boat at 32.3 ft9.85 m LOA versus 20.0 ft6.10 m for the Cygnus 20.
- The Nonsuch 324 is heavier, displacing about 1111% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Cygnus 20 carries the more powerful rig (29.5 vs 21.6), favouring lighter-air performance.
- The Nonsuch 324 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Nonsuch 324 rates better for offshore work (2.10 vs 2.85).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.