Beneteau 31 vs Beneteau Oceanis 321
How do the Beneteau 31 and Beneteau Oceanis 321 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Beneteau 31 
Beneteau Oceanis 321 | Beneteau 31 | Beneteau Oceanis 321 | |
|---|---|---|
| Length overall | 31.7 ft9.65 m | 32.6 ft9.95 m |
| Waterline length | 28.5 ft8.69 m | 29.4 ft8.95 m |
| Beam | 11.1 ft3.38 m | 11.2 ft3.42 m |
| Draft | 5.8 ft1.78 m | 4.3 ft1.30 m |
| Displacement | 8,933 lb4,052 kg | 9,700 lb4,400 kg |
| Ballast | 2,207 lb1,001 kg | 3,000 lb1,361 kg |
| Sail area | 461 ft²42.8 m² | 500 ft²46.5 m² |
| SA / Displacement | 17.13 | 17.59 |
| Displacement / Length | 172 | 171 |
| Comfort ratio | 19.0 | 19.7 |
| Capsize screening | 2.14 | 2.10 |
| Hull speed (kn) | 7.2 | 7.3 |
Beneteau 31 vs Beneteau Oceanis 321: the short version
- The Beneteau Oceanis 321 is the larger boat at 32.6 ft9.95 m LOA versus 31.7 ft9.65 m for the Beneteau 31.
- The Beneteau Oceanis 321 is heavier, displacing about 9% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Beneteau Oceanis 321 carries the more powerful rig (17.6 vs 17.1), favouring lighter-air performance.
- The Beneteau Oceanis 321 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Beneteau Oceanis 321 rates better for offshore work (2.10 vs 2.14).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.