Archambault A27 vs Archambault Grand Surprise
How do the Archambault A27 and Archambault Grand Surprise compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Archambault A27 
Archambault Grand Surprise | Archambault A27 | Archambault Grand Surprise | |
|---|---|---|
| Length overall | 27.4 ft8.35 m | 31.3 ft9.54 m |
| Waterline length | 23.8 ft7.25 m | 29.3 ft8.93 m |
| Beam | 9.8 ft2.98 m | 9.8 ft2.98 m |
| Draft | 5.4 ft1.65 m | 6.7 ft2.05 m |
| Displacement | 4,750 lb2,155 kg | 58 lb26 kg |
| Ballast | 1,764 lb800 kg | 2,315 lb1,050 kg |
| Sail area | 446 ft²41.4 m² | 602 ft²55.9 m² |
| SA / Displacement | 25.25 | 642.83 |
| Displacement / Length | 157 | 1 |
| Comfort ratio | 14.2 | 0.1 |
| Capsize screening | 2.33 | 10.11 |
| Hull speed (kn) | 6.5 | 7.3 |
Archambault A27 vs Archambault Grand Surprise: the short version
- The Archambault Grand Surprise is the larger boat at 31.3 ft9.54 m LOA versus 27.4 ft8.35 m for the Archambault A27.
- The Archambault A27 is heavier, displacing about 8090% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Archambault Grand Surprise carries the more powerful rig (642.8 vs 25.3), favouring lighter-air performance.
- The Archambault A27 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Archambault A27 rates better for offshore work (2.33 vs 10.11).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.