470 vs US1
How do the 470 and US1 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
470 
US1 | 470 | US1 | |
|---|---|---|
| Length overall | 15.4 ft4.70 m | 15.4 ft4.70 m |
| Waterline length | 14.4 ft4.40 m | 13.5 ft4.11 m |
| Beam | 4.2 ft1.27 m | 4.6 ft1.40 m |
| Draft | 0.5 ft0.15 m | 2.5 ft0.76 m |
| Displacement | 265 lb120 kg | 190 lb86 kg |
| Ballast | —— | —— |
| Sail area | 137 ft²12.7 m² | 90 ft²8.4 m² |
| SA / Displacement | 53.13 | 43.57 |
| Displacement / Length | 39 | 34 |
| Comfort ratio | 4.1 | 2.7 |
| Capsize screening | 2.60 | 3.19 |
| Hull speed (kn) | 5.1 | 4.9 |
470 vs US1: the short version
- The 470 and US1 are close in length (15.4 ft4.70 m vs 15.4 ft4.70 m ).
- The 470 is heavier, displacing about 39% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the 470 carries the more powerful rig (53.1 vs 43.6), favouring lighter-air performance.
- The 470 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the 470 rates better for offshore work (2.60 vs 3.19).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.