Sirocco 15 vs Vanguard 15
How do the Sirocco 15 and Vanguard 15 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Sirocco 15 
Vanguard 15 | Sirocco 15 | Vanguard 15 | |
|---|---|---|
| Length overall | 15.3 ft4.67 m | 15.3 ft4.65 m |
| Waterline length | 14.3 ft4.34 m | 15.0 ft4.57 m |
| Beam | 5.9 ft1.80 m | 5.5 ft1.68 m |
| Draft | 3.8 ft1.17 m | 3.4 ft1.04 m |
| Displacement | 470 lb213 kg | 200 lb91 kg |
| Ballast | 75 lb34 kg | —— |
| Sail area | 147 ft²13.7 m² | 125 ft²11.6 m² |
| SA / Displacement | 38.91 | 58.48 |
| Displacement / Length | 73 | 26 |
| Comfort ratio | 4.7 | 2.1 |
| Capsize screening | 3.05 | 3.76 |
| Hull speed (kn) | 5.1 | 5.2 |
Sirocco 15 vs Vanguard 15: the short version
- The Sirocco 15 and Vanguard 15 are close in length (15.3 ft4.67 m vs 15.3 ft4.65 m ).
- The Sirocco 15 is heavier, displacing about 135% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Vanguard 15 carries the more powerful rig (58.5 vs 38.9), favouring lighter-air performance.
- The Sirocco 15 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Sirocco 15 rates better for offshore work (3.05 vs 3.76).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.