K3 vs K4
How do the K3 and K4 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
K3 | K3 | K4 | |
|---|---|---|
| Length overall | 16.1 ft4.91 m | 14.8 ft4.51 m |
| Waterline length | —— | —— |
| Beam | 7.3 ft2.21 m | 7.3 ft2.21 m |
| Draft | —— | —— |
| Displacement | 304 lb138 kg | 254 lb115 kg |
| Ballast | —— | —— |
| Sail area | 160 ft²14.9 m² | 118 ft²11.0 m² |
| SA / Displacement | 56.62 | 47.07 |
| Displacement / Length | — | — |
| Comfort ratio | — | — |
| Capsize screening | 4.31 | 4.58 |
| Hull speed (kn) | — | — |
K3 vs K4: the short version
- The K3 is the larger boat at 16.1 ft4.91 m LOA versus 14.8 ft4.51 m for the K4.
- The K3 is heavier, displacing about 20% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the K3 carries the more powerful rig (56.6 vs 47.1), favouring lighter-air performance.
- By the capsize screening formula the K3 rates better for offshore work (4.31 vs 4.58).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.