Invader 36 vs Niagara 31
How do the Invader 36 and Niagara 31 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Invader 36 | Invader 36 | Niagara 31 | |
|---|---|---|
| Length overall | 35.8 ft10.90 m | 31.3 ft9.53 m |
| Waterline length | 24.3 ft7.39 m | 24.3 ft7.39 m |
| Beam | 9.2 ft2.79 m | 10.3 ft3.12 m |
| Draft | 5.0 ft1.52 m | 5.0 ft1.52 m |
| Displacement | 10,550 lb4,785 kg | 8,000 lb3,629 kg |
| Ballast | 3,800 lb1,724 kg | 3,550 lb1,610 kg |
| Sail area | 504 ft²46.8 m² | 492 ft²45.7 m² |
| SA / Displacement | 16.76 | 19.68 |
| Displacement / Length | 330 | 250 |
| Comfort ratio | 30.8 | 21.1 |
| Capsize screening | 1.67 | 2.05 |
| Hull speed (kn) | 6.6 | 6.6 |
Invader 36 vs Niagara 31: the short version
- The Invader 36 is the larger boat at 35.8 ft10.90 m LOA versus 31.3 ft9.53 m for the Niagara 31.
- The Invader 36 is heavier, displacing about 32% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Niagara 31 carries the more powerful rig (19.7 vs 16.8), favouring lighter-air performance.
- The Invader 36 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Invader 36 rates better for offshore work (1.67 vs 2.05).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.