Swan 37 vs Swan 45
How do the Swan 37 and Swan 45 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Swan 37 
Swan 45 | Swan 37 | Swan 45 | |
|---|---|---|
| Length overall | 37.0 ft11.28 m | 45.4 ft13.83 m |
| Waterline length | 27.0 ft8.23 m | 39.6 ft12.07 m |
| Beam | 10.0 ft3.05 m | 12.8 ft3.91 m |
| Draft | 6.4 ft1.95 m | 9.2 ft2.80 m |
| Displacement | 15,400 lb6,985 kg | 21,716 lb9,850 kg |
| Ballast | 7,300 lb3,311 kg | 8,620 lb3,910 kg |
| Sail area | —— | 1,411 ft²131.1 m² |
| SA / Displacement | — | 29.00 |
| Displacement / Length | 349 | 156 |
| Comfort ratio | 36.9 | 27.1 |
| Capsize screening | 1.61 | 1.84 |
| Hull speed (kn) | 7.0 | 8.4 |
Swan 37 vs Swan 45: the short version
- The Swan 45 is the larger boat at 45.4 ft13.83 m LOA versus 37.0 ft11.28 m for the Swan 37.
- The Swan 45 is heavier, displacing about 41% more, which usually means a steadier but slower-to-accelerate hull.
- The Swan 37 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Swan 37 rates better for offshore work (1.61 vs 1.84).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.