Mercury 18 vs Prindle 18-2
How do the Mercury 18 and Prindle 18-2 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Mercury 18 
Prindle 18-2 | Mercury 18 | Prindle 18-2 | |
|---|---|---|
| Length overall | 18.0 ft5.49 m | 18.0 ft5.49 m |
| Waterline length | 13.0 ft3.96 m | 17.2 ft5.24 m |
| Beam | 5.3 ft1.62 m | 8.5 ft2.59 m |
| Draft | 3.1 ft0.94 m | 2.1 ft0.63 m |
| Displacement | 1,100 lb499 kg | 375 lb170 kg |
| Ballast | 635 lb288 kg | —— |
| Sail area | 167 ft²15.5 m² | 233 ft²21.6 m² |
| SA / Displacement | 25.08 | 71.69 |
| Displacement / Length | 224 | 33 |
| Comfort ratio | 12.6 | 1.9 |
| Capsize screening | 2.07 | 4.71 |
| Hull speed (kn) | 4.8 | 5.6 |
Mercury 18 vs Prindle 18-2: the short version
- The Mercury 18 and Prindle 18-2 are close in length (18.0 ft5.49 m vs 18.0 ft5.49 m ).
- The Mercury 18 is heavier, displacing about 193% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Prindle 18-2 carries the more powerful rig (71.7 vs 25.1), favouring lighter-air performance.
- The Mercury 18 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Mercury 18 rates better for offshore work (2.07 vs 4.71).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.