CS 30 vs CS 34
How do the CS 30 and CS 34 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
CS 30 
CS 34 | CS 30 | CS 34 | |
|---|---|---|
| Length overall | 30.0 ft9.14 m | 33.5 ft10.21 m |
| Waterline length | 25.4 ft7.75 m | 27.7 ft8.43 m |
| Beam | 10.3 ft3.12 m | 11.3 ft3.43 m |
| Draft | 5.5 ft1.68 m | 6.3 ft1.91 m |
| Displacement | 8,000 lb3,629 kg | 10,500 lb4,763 kg |
| Ballast | 3,440 lb1,560 kg | —— |
| Sail area | 462 ft²42.9 m² | 533 ft²49.5 m² |
| SA / Displacement | 18.48 | 17.79 |
| Displacement / Length | 217 | 221 |
| Comfort ratio | 20.8 | 22.0 |
| Capsize screening | 2.05 | 2.06 |
| Hull speed (kn) | 6.8 | 7.0 |
CS 30 vs CS 34: the short version
- The CS 34 is the larger boat at 33.5 ft10.21 m LOA versus 30.0 ft9.14 m for the CS 30.
- The CS 34 is heavier, displacing about 31% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the CS 30 carries the more powerful rig (18.5 vs 17.8), favouring lighter-air performance.
- The CS 34 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the CS 30 rates better for offshore work (2.05 vs 2.06).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.