Swan 391 vs Swan 441
How do the Swan 391 and Swan 441 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Swan 391 
Swan 441 | Swan 391 | Swan 441 | |
|---|---|---|
| Length overall | 33.1 ft10.08 m | 36.8 ft11.20 m |
| Waterline length | 33.1 ft10.08 m | 36.8 ft11.20 m |
| Beam | 12.4 ft3.79 m | 13.3 ft4.06 m |
| Draft | 7.2 ft2.19 m | 6.5 ft1.98 m |
| Displacement | 18,900 lb8,573 kg | 24,692 lb11,200 kg |
| Ballast | 6,800 lb3,084 kg | 11,000 lb4,990 kg |
| Sail area | 767 ft²71.3 m² | 1,248 ft²115.9 m² |
| SA / Displacement | 17.30 | 23.55 |
| Displacement / Length | 233 | 222 |
| Comfort ratio | 30.8 | 33.0 |
| Capsize screening | 1.87 | 1.83 |
| Hull speed (kn) | 7.7 | 8.1 |
Swan 391 vs Swan 441: the short version
- The Swan 441 is the larger boat at 36.8 ft11.20 m LOA versus 33.1 ft10.08 m for the Swan 391.
- The Swan 441 is heavier, displacing about 31% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Swan 441 carries the more powerful rig (23.5 vs 17.3), favouring lighter-air performance.
- The Swan 441 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Swan 441 rates better for offshore work (1.83 vs 1.87).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.