C&C 121 vs C&C 99
How do the C&C 121 and C&C 99 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
C&C 121 
C&C 99 | C&C 121 | C&C 99 | |
|---|---|---|
| Length overall | 40.0 ft12.19 m | 32.5 ft9.91 m |
| Waterline length | 35.5 ft10.82 m | 29.1 ft8.86 m |
| Beam | 13.1 ft3.99 m | 10.8 ft3.30 m |
| Draft | 6.5 ft1.98 m | 5.5 ft1.68 m |
| Displacement | 14,600 lb6,622 kg | 9,265 lb4,203 kg |
| Ballast | 6,000 lb2,722 kg | 3,500 lb1,588 kg |
| Sail area | 844 ft²78.4 m² | 562 ft²52.2 m² |
| SA / Displacement | 22.61 | 20.38 |
| Displacement / Length | 146 | 168 |
| Comfort ratio | 19.9 | 19.9 |
| Capsize screening | 2.14 | 2.06 |
| Hull speed (kn) | 8.0 | 7.2 |
C&C 121 vs C&C 99: the short version
- The C&C 121 is the larger boat at 40.0 ft12.19 m LOA versus 32.5 ft9.91 m for the C&C 99.
- The C&C 121 is heavier, displacing about 58% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the C&C 121 carries the more powerful rig (22.6 vs 20.4), favouring lighter-air performance.
- The C&C 121 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the C&C 99 rates better for offshore work (2.06 vs 2.14).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.