Kirby 30 vs Mirage 30 SX
How do the Kirby 30 and Mirage 30 SX compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Kirby 30 | Kirby 30 | Mirage 30 SX | |
|---|---|---|
| Length overall | 29.7 ft9.04 m | 30.0 ft9.14 m |
| Waterline length | 23.5 ft7.16 m | 24.1 ft7.35 m |
| Beam | 10.3 ft3.12 m | 10.5 ft3.20 m |
| Draft | 5.5 ft1.68 m | 5.9 ft1.80 m |
| Displacement | 5,350 lb2,427 kg | 5,900 lb2,676 kg |
| Ballast | 2,300 lb1,043 kg | —— |
| Sail area | 434 ft²40.3 m² | 474 ft²44.0 m² |
| SA / Displacement | 22.70 | 23.23 |
| Displacement / Length | 184 | 188 |
| Comfort ratio | 14.7 | 15.4 |
| Capsize screening | 2.34 | 2.32 |
| Hull speed (kn) | 6.5 | 6.6 |
Kirby 30 vs Mirage 30 SX: the short version
- The Kirby 30 and Mirage 30 SX are close in length (29.7 ft9.04 m vs 30.0 ft9.14 m ).
- The Mirage 30 SX is heavier, displacing about 10% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Mirage 30 SX carries the more powerful rig (23.2 vs 22.7), favouring lighter-air performance.
- The Mirage 30 SX scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Mirage 30 SX rates better for offshore work (2.32 vs 2.34).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.