Swan 411 vs Swan 431
How do the Swan 411 and Swan 431 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Swan 411 
Swan 431 | Swan 411 | Swan 431 | |
|---|---|---|
| Length overall | 33.6 ft10.23 m | 33.3 ft10.16 m |
| Waterline length | 33.6 ft10.23 m | 33.3 ft10.16 m |
| Beam | 11.9 ft3.64 m | 13.4 ft4.09 m |
| Draft | 7.3 ft2.22 m | 7.5 ft2.30 m |
| Displacement | 23,810 lb10,800 kg | 27,558 lb12,500 kg |
| Ballast | 9,700 lb4,400 kg | 11,900 lb5,398 kg |
| Sail area | 1,131 ft²105.1 m² | 896 ft²83.2 m² |
| SA / Displacement | 21.86 | 15.71 |
| Displacement / Length | 281 | 332 |
| Comfort ratio | 40.3 | 40.2 |
| Capsize screening | 1.66 | 1.78 |
| Hull speed (kn) | 7.8 | 7.7 |
Swan 411 vs Swan 431: the short version
- The Swan 411 and Swan 431 are close in length (33.6 ft10.23 m vs 33.3 ft10.16 m ).
- The Swan 431 is heavier, displacing about 16% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Swan 411 carries the more powerful rig (21.9 vs 15.7), favouring lighter-air performance.
- The Swan 411 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Swan 411 rates better for offshore work (1.66 vs 1.78).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.