Hunter 170 vs Hunter 31-2
How do the Hunter 170 and Hunter 31-2 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Hunter 170 
Hunter 31-2 | Hunter 170 | Hunter 31-2 | |
|---|---|---|
| Length overall | 17.1 ft5.21 m | 30.0 ft9.14 m |
| Waterline length | 12.1 ft3.68 m | 28.1 ft8.56 m |
| Beam | 7.0 ft2.13 m | 11.1 ft3.38 m |
| Draft | 4.5 ft1.37 m | 3.9 ft1.19 m |
| Displacement | 478 lb217 kg | 8,505 lb3,858 kg |
| Ballast | —— | 2,571 lb1,166 kg |
| Sail area | 134 ft²12.4 m² | 351 ft²32.6 m² |
| SA / Displacement | 35.07 | 13.48 |
| Displacement / Length | 121 | 171 |
| Comfort ratio | 4.1 | 18.6 |
| Capsize screening | 3.58 | 2.17 |
| Hull speed (kn) | 4.7 | 7.1 |
Hunter 170 vs Hunter 31-2: the short version
- The Hunter 31-2 is the larger boat at 30.0 ft9.14 m LOA versus 17.1 ft5.21 m for the Hunter 170.
- The Hunter 31-2 is heavier, displacing about 1679% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Hunter 170 carries the more powerful rig (35.1 vs 13.5), favouring lighter-air performance.
- The Hunter 31-2 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Hunter 31-2 rates better for offshore work (2.17 vs 3.58).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.