Etap 21i vs Etap 39s
How do the Etap 21i and Etap 39s compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Etap 21i | Etap 21i | Etap 39s | |
|---|---|---|
| Length overall | 21.5 ft6.56 m | 39.0 ft11.88 m |
| Waterline length | 20.0 ft6.10 m | 33.5 ft10.20 m |
| Beam | 8.2 ft2.49 m | 12.6 ft3.85 m |
| Draft | 2.3 ft0.70 m | 6.4 ft1.95 m |
| Displacement | 2,712 lb1,230 kg | 14,991 lb6,800 kg |
| Ballast | 772 lb350 kg | 4,960 lb2,250 kg |
| Sail area | 257 ft²23.9 m² | 835 ft²77.6 m² |
| SA / Displacement | 21.14 | 21.97 |
| Displacement / Length | 151 | 179 |
| Comfort ratio | 12.5 | 22.5 |
| Capsize screening | 2.34 | 2.05 |
| Hull speed (kn) | 6.0 | 7.8 |
Etap 21i vs Etap 39s: the short version
- The Etap 39s is the larger boat at 39.0 ft11.88 m LOA versus 21.5 ft6.56 m for the Etap 21i.
- The Etap 39s is heavier, displacing about 453% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Etap 39s carries the more powerful rig (22.0 vs 21.1), favouring lighter-air performance.
- The Etap 39s scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Etap 39s rates better for offshore work (2.05 vs 2.34).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.