Kirby 25 vs Mirage 35
How do the Kirby 25 and Mirage 35 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Kirby 25 
Mirage 35 | Kirby 25 | Mirage 35 | |
|---|---|---|
| Length overall | 25.2 ft7.67 m | 35.5 ft10.82 m |
| Waterline length | 20.8 ft6.32 m | 26.8 ft8.15 m |
| Beam | 8.8 ft2.67 m | 11.7 ft3.56 m |
| Draft | 4.2 ft1.27 m | 5.0 ft1.52 m |
| Displacement | 3,150 lb1,429 kg | 10,000 lb4,536 kg |
| Ballast | 1,150 lb522 kg | 3,500 lb1,588 kg |
| Sail area | 289 ft²26.8 m² | 468 ft²43.5 m² |
| SA / Displacement | 21.52 | 16.13 |
| Displacement / Length | 157 | 233 |
| Comfort ratio | 12.3 | 19.9 |
| Capsize screening | 2.39 | 2.17 |
| Hull speed (kn) | 6.1 | 6.9 |
Kirby 25 vs Mirage 35: the short version
- The Mirage 35 is the larger boat at 35.5 ft10.82 m LOA versus 25.2 ft7.67 m for the Kirby 25.
- The Mirage 35 is heavier, displacing about 217% 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 16.1), favouring lighter-air performance.
- The Mirage 35 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Mirage 35 rates better for offshore work (2.17 vs 2.39).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.