Seidelmann 37 vs Swan 441
How do the Seidelmann 37 and Swan 441 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Seidelmann 37 
Swan 441 | Seidelmann 37 | Swan 441 | |
|---|---|---|
| Length overall | 36.8 ft11.23 m | 36.8 ft11.20 m |
| Waterline length | 31.0 ft9.45 m | 36.8 ft11.20 m |
| Beam | 12.0 ft3.66 m | 13.3 ft4.06 m |
| Draft | 5.9 ft1.80 m | 6.5 ft1.98 m |
| Displacement | 12,000 lb5,443 kg | 24,692 lb11,200 kg |
| Ballast | 5,900 lb2,676 kg | 11,000 lb4,990 kg |
| Sail area | 643 ft²59.7 m² | 1,248 ft²115.9 m² |
| SA / Displacement | 19.63 | 23.55 |
| Displacement / Length | 180 | 222 |
| Comfort ratio | 20.7 | 33.0 |
| Capsize screening | 2.10 | 1.83 |
| Hull speed (kn) | 7.5 | 8.1 |
Seidelmann 37 vs Swan 441: the short version
- The Seidelmann 37 and Swan 441 are close in length (36.8 ft11.23 m vs 36.8 ft11.20 m ).
- The Swan 441 is heavier, displacing about 106% 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 19.6), 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 2.10).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.