Cape Cod Mercury 15 vs JY15
How do the Cape Cod Mercury 15 and JY15 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Cape Cod Mercury 15 
JY15 | Cape Cod Mercury 15 | JY15 | |
|---|---|---|
| Length overall | 15.0 ft4.57 m | 15.0 ft4.57 m |
| Waterline length | 13.8 ft4.22 m | —— |
| Beam | 5.4 ft1.65 m | 5.8 ft1.78 m |
| Draft | 2.4 ft0.74 m | 3.0 ft0.91 m |
| Displacement | 730 lb331 kg | 275 lb125 kg |
| Ballast | 200 lb91 kg | —— |
| Sail area | 119 ft²11.1 m² | 135 ft²12.5 m² |
| SA / Displacement | 23.48 | 51.08 |
| Displacement / Length | 123 | — |
| Comfort ratio | 8.4 | — |
| Capsize screening | 2.41 | 3.59 |
| Hull speed (kn) | 5.0 | — |
Cape Cod Mercury 15 vs JY15: the short version
- The Cape Cod Mercury 15 and JY15 are close in length (15.0 ft4.57 m vs 15.0 ft4.57 m ).
- The Cape Cod Mercury 15 is heavier, displacing about 165% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the JY15 carries the more powerful rig (51.1 vs 23.5), favouring lighter-air performance.
- By the capsize screening formula the Cape Cod Mercury 15 rates better for offshore work (2.41 vs 3.59).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.