Hunter 18.5 vs Hunter 31
How do the Hunter 18.5 and Hunter 31 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Hunter 18.5 | Hunter 18.5 | Hunter 31 | |
|---|---|---|
| Length overall | 18.4 ft5.61 m | 31.3 ft9.55 m |
| Waterline length | 15.5 ft4.72 m | 26.3 ft8.00 m |
| Beam | 7.1 ft2.16 m | 10.9 ft3.33 m |
| Draft | 2.0 ft0.61 m | 5.3 ft1.62 m |
| Displacement | 1,600 lb726 kg | 9,700 lb4,400 kg |
| Ballast | 520 lb236 kg | 4,000 lb1,814 kg |
| Sail area | 152 ft²14.1 m² | 458 ft²42.5 m² |
| SA / Displacement | 17.78 | 16.11 |
| Displacement / Length | 192 | 239 |
| Comfort ratio | 11.1 | 22.4 |
| Capsize screening | 2.42 | 2.05 |
| Hull speed (kn) | 5.3 | 6.9 |
Hunter 18.5 vs Hunter 31: the short version
- The Hunter 31 is the larger boat at 31.3 ft9.55 m LOA versus 18.4 ft5.61 m for the Hunter 18.5.
- The Hunter 31 is heavier, displacing about 506% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Hunter 18.5 carries the more powerful rig (17.8 vs 16.1), favouring lighter-air performance.
- The Hunter 31 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Hunter 31 rates better for offshore work (2.05 vs 2.42).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.