Nonsuch 40 vs Swan 45
How do the Nonsuch 40 and Swan 45 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Nonsuch 40 
Swan 45 | Nonsuch 40 | Swan 45 | |
|---|---|---|
| Length overall | 45.0 ft13.70 m | 45.4 ft13.83 m |
| Waterline length | 40.0 ft12.20 m | 39.6 ft12.07 m |
| Beam | 14.1 ft4.30 m | 12.8 ft3.91 m |
| Draft | 6.6 ft2.00 m | 9.2 ft2.80 m |
| Displacement | 26,896 lb12,200 kg | 21,716 lb9,850 kg |
| Ballast | —— | 8,620 lb3,910 kg |
| Sail area | —— | 1,411 ft²131.1 m² |
| SA / Displacement | — | 29.00 |
| Displacement / Length | 187 | 156 |
| Comfort ratio | 29.5 | 27.1 |
| Capsize screening | 1.88 | 1.84 |
| Hull speed (kn) | 8.5 | 8.4 |
Nonsuch 40 vs Swan 45: the short version
- The Nonsuch 40 and Swan 45 are close in length (45.0 ft13.70 m vs 45.4 ft13.83 m ).
- The Nonsuch 40 is heavier, displacing about 24% more, which usually means a steadier but slower-to-accelerate hull.
- The Nonsuch 40 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Swan 45 rates better for offshore work (1.84 vs 1.88).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.