Com-Pac 23 vs J/70
How do the Com-Pac 23 and J/70 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Com-Pac 23 
J/70 | Com-Pac 23 | J/70 | |
|---|---|---|
| Length overall | 22.8 ft6.93 m | 22.7 ft6.93 m |
| Waterline length | 20.2 ft6.15 m | 20.5 ft6.24 m |
| Beam | 7.8 ft2.39 m | 7.4 ft2.25 m |
| Draft | 2.3 ft0.69 m | 4.9 ft1.50 m |
| Displacement | 2,900 lb1,315 kg | 1,790 lb812 kg |
| Ballast | 1,340 lb608 kg | 628 lb285 kg |
| Sail area | 206 ft²19.1 m² | 226 ft²21.0 m² |
| SA / Displacement | 16.21 | 24.53 |
| Displacement / Length | 158 | 93 |
| Comfort ratio | 13.8 | 9.1 |
| Capsize screening | 2.20 | 2.43 |
| Hull speed (kn) | 6.0 | 6.1 |
Com-Pac 23 vs J/70: the short version
- The Com-Pac 23 and J/70 are close in length (22.8 ft6.93 m vs 22.7 ft6.93 m ).
- The Com-Pac 23 is heavier, displacing about 62% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the J/70 carries the more powerful rig (24.5 vs 16.2), favouring lighter-air performance.
- The Com-Pac 23 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Com-Pac 23 rates better for offshore work (2.20 vs 2.43).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.