C&C 121 vs C&C 27 Mk V
How do the C&C 121 and C&C 27 Mk V 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 27 Mk V | C&C 121 | C&C 27 Mk V | |
|---|---|---|
| Length overall | 40.0 ft12.19 m | 26.5 ft8.08 m |
| Waterline length | 35.5 ft10.82 m | 23.0 ft7.01 m |
| Beam | 13.1 ft3.99 m | 9.3 ft2.82 m |
| Draft | 6.5 ft1.98 m | 4.8 ft1.46 m |
| Displacement | 14,600 lb6,622 kg | 4,420 lb2,005 kg |
| Ballast | 6,000 lb2,722 kg | 1,715 lb778 kg |
| Sail area | 844 ft²78.4 m² | 343 ft²31.9 m² |
| SA / Displacement | 22.61 | 20.38 |
| Displacement / Length | 146 | 162 |
| Comfort ratio | 19.9 | 14.7 |
| Capsize screening | 2.14 | 2.25 |
| Hull speed (kn) | 8.0 | 6.4 |
C&C 121 vs C&C 27 Mk V: the short version
- The C&C 121 is the larger boat at 40.0 ft12.19 m LOA versus 26.5 ft8.08 m for the C&C 27 Mk V.
- The C&C 121 is heavier, displacing about 230% 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 121 rates better for offshore work (2.14 vs 2.25).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.