Kirby 25 vs Mirage 39
How do the Kirby 25 and Mirage 39 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Kirby 25 
Mirage 39 | Kirby 25 | Mirage 39 | |
|---|---|---|
| Length overall | 25.2 ft7.67 m | 39.2 ft11.94 m |
| Waterline length | 20.8 ft6.32 m | 32.8 ft10.01 m |
| Beam | 8.8 ft2.67 m | 12.5 ft3.81 m |
| Draft | 4.2 ft1.27 m | 6.2 ft1.88 m |
| Displacement | 3,150 lb1,429 kg | 16,000 lb7,257 kg |
| Ballast | 1,150 lb522 kg | 6,000 lb2,722 kg |
| Sail area | 289 ft²26.8 m² | —— |
| SA / Displacement | 21.52 | — |
| Displacement / Length | 157 | 202 |
| Comfort ratio | 12.3 | 24.6 |
| Capsize screening | 2.39 | 1.98 |
| Hull speed (kn) | 6.1 | 7.7 |
Kirby 25 vs Mirage 39: the short version
- The Mirage 39 is the larger boat at 39.2 ft11.94 m LOA versus 25.2 ft7.67 m for the Kirby 25.
- The Mirage 39 is heavier, displacing about 408% more, which usually means a steadier but slower-to-accelerate hull.
- The Mirage 39 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Mirage 39 rates better for offshore work (1.98 vs 2.39).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.