Kirby 25 vs Mirage 275
How do the Kirby 25 and Mirage 275 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Kirby 25 
Mirage 275 | Kirby 25 | Mirage 275 | |
|---|---|---|
| Length overall | 25.2 ft7.67 m | 27.5 ft8.38 m |
| Waterline length | 20.8 ft6.32 m | 22.5 ft6.86 m |
| Beam | 8.8 ft2.67 m | 9.8 ft3.00 m |
| Draft | 4.2 ft1.27 m | 4.3 ft1.32 m |
| Displacement | 3,150 lb1,429 kg | 6,800 lb3,084 kg |
| Ballast | 1,150 lb522 kg | 2,400 lb1,089 kg |
| Sail area | 289 ft²26.8 m² | 334 ft²31.0 m² |
| SA / Displacement | 21.52 | 14.89 |
| Displacement / Length | 157 | 267 |
| Comfort ratio | 12.3 | 20.9 |
| Capsize screening | 2.39 | 2.08 |
| Hull speed (kn) | 6.1 | 6.4 |
Kirby 25 vs Mirage 275: the short version
- The Mirage 275 is the larger boat at 27.5 ft8.38 m LOA versus 25.2 ft7.67 m for the Kirby 25.
- The Mirage 275 is heavier, displacing about 116% 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 14.9), favouring lighter-air performance.
- The Mirage 275 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Mirage 275 rates better for offshore work (2.08 vs 2.39).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.