Kirby 25 vs Nordic Folkboat
How do the Kirby 25 and Nordic Folkboat compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Kirby 25 
Nordic Folkboat | Kirby 25 | Nordic Folkboat | |
|---|---|---|
| Length overall | 25.2 ft7.67 m | 25.2 ft7.68 m |
| Waterline length | 20.8 ft6.32 m | 19.7 ft6.00 m |
| Beam | 8.8 ft2.67 m | 7.2 ft2.20 m |
| Draft | 4.2 ft1.27 m | 3.9 ft1.19 m |
| Displacement | 3,150 lb1,429 kg | 4,255 lb1,930 kg |
| Ballast | 1,150 lb522 kg | 2,205 lb1,000 kg |
| Sail area | 289 ft²26.8 m² | 220 ft²20.4 m² |
| SA / Displacement | 21.52 | 13.41 |
| Displacement / Length | 157 | 249 |
| Comfort ratio | 12.3 | 22.1 |
| Capsize screening | 2.39 | 1.78 |
| Hull speed (kn) | 6.1 | 5.9 |
Kirby 25 vs Nordic Folkboat: the short version
- The Kirby 25 and Nordic Folkboat are close in length (25.2 ft7.67 m vs 25.2 ft7.68 m ).
- The Nordic Folkboat is heavier, displacing about 35% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Kirby 25 carries the more powerful rig (21.5 vs 13.4), favouring lighter-air performance.
- The Nordic Folkboat scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Nordic Folkboat rates better for offshore work (1.78 vs 2.39).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.