Aquarius 21 vs Mistral T-21
How do the Aquarius 21 and Mistral T-21 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Aquarius 21 
Mistral T-21 | Aquarius 21 | Mistral T-21 | |
|---|---|---|
| Length overall | 21.0 ft6.40 m | 21.0 ft6.40 m |
| Waterline length | 18.3 ft5.56 m | 18.7 ft5.69 m |
| Beam | 7.8 ft2.38 m | 8.2 ft2.49 m |
| Draft | 4.5 ft1.37 m | 5.1 ft1.55 m |
| Displacement | 1,900 lb862 kg | 2,700 lb1,225 kg |
| Ballast | 665 lb302 kg | 770 lb349 kg |
| Sail area | 163 ft²15.1 m² | 228 ft²21.2 m² |
| SA / Displacement | 17.00 | 18.81 |
| Displacement / Length | 140 | 185 |
| Comfort ratio | 9.9 | 13.1 |
| Capsize screening | 2.53 | 2.34 |
| Hull speed (kn) | 5.7 | 5.8 |
Aquarius 21 vs Mistral T-21: the short version
- The Aquarius 21 and Mistral T-21 are close in length (21.0 ft6.40 m vs 21.0 ft6.40 m ).
- The Mistral T-21 is heavier, displacing about 42% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Mistral T-21 carries the more powerful rig (18.8 vs 17.0), favouring lighter-air performance.
- The Mistral T-21 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Mistral T-21 rates better for offshore work (2.34 vs 2.53).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.