Catalina 18 vs Sanibel 18
How do the Catalina 18 and Sanibel 18 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Catalina 18 
Sanibel 18 | Catalina 18 | Sanibel 18 | |
|---|---|---|
| Length overall | 18.0 ft5.49 m | 17.9 ft5.45 m |
| Waterline length | 16.3 ft4.98 m | 15.1 ft4.59 m |
| Beam | 7.6 ft2.31 m | 7.8 ft2.38 m |
| Draft | 2.3 ft0.71 m | 4.0 ft1.22 m |
| Displacement | 1,500 lb680 kg | 1,369 lb621 kg |
| Ballast | 425 lb193 kg | 450 lb204 kg |
| Sail area | 151 ft²14.0 m² | 170 ft²15.8 m² |
| SA / Displacement | 18.44 | 22.06 |
| Displacement / Length | 154 | 179 |
| Comfort ratio | 9.3 | 8.6 |
| Capsize screening | 2.65 | 2.81 |
| Hull speed (kn) | 5.4 | 5.2 |
Catalina 18 vs Sanibel 18: the short version
- The Catalina 18 and Sanibel 18 are close in length (18.0 ft5.49 m vs 17.9 ft5.45 m ).
- The Catalina 18 is heavier, displacing about 10% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Sanibel 18 carries the more powerful rig (22.1 vs 18.4), favouring lighter-air performance.
- The Catalina 18 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Catalina 18 rates better for offshore work (2.65 vs 2.81).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.