Com-Pac Eclipse vs Com-Pac Sunday Cat
How do the Com-Pac Eclipse and Com-Pac Sunday Cat compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Com-Pac Eclipse 
Com-Pac Sunday Cat | Com-Pac Eclipse | Com-Pac Sunday Cat | |
|---|---|---|
| Length overall | 21.3 ft6.50 m | 17.3 ft5.28 m |
| Waterline length | 18.1 ft5.51 m | 15.0 ft4.57 m |
| Beam | 7.3 ft2.23 m | 7.4 ft2.26 m |
| Draft | 5.2 ft1.57 m | 4.5 ft1.37 m |
| Displacement | 2,200 lb998 kg | 1,500 lb680 kg |
| Ballast | 700 lb318 kg | 300 lb136 kg |
| Sail area | 158 ft²14.7 m² | 150 ft²13.9 m² |
| SA / Displacement | 14.94 | 18.32 |
| Displacement / Length | 166 | 198 |
| Comfort ratio | 12.6 | 10.3 |
| Capsize screening | 2.25 | 2.59 |
| Hull speed (kn) | 5.7 | 5.2 |
Com-Pac Eclipse vs Com-Pac Sunday Cat: the short version
- The Com-Pac Eclipse is the larger boat at 21.3 ft6.50 m LOA versus 17.3 ft5.28 m for the Com-Pac Sunday Cat.
- The Com-Pac Eclipse is heavier, displacing about 47% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Com-Pac Sunday Cat carries the more powerful rig (18.3 vs 14.9), favouring lighter-air performance.
- The Com-Pac Eclipse scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Com-Pac Eclipse rates better for offshore work (2.25 vs 2.59).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.