Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
77.85 ft
J ?
23.39 ft
P ?
81.35 ft
E ?
29.17 ft
Sail Area Breakdown
Calculated from rigging dimensions. Use these as your starting point when ordering a new suit.
| Sail | Area (ft²) | Area (m²) |
|---|---|---|
| MainsailP × E ÷ 2 | 1,186.5 | 110.2 |
| 100% ForetriangleI × J ÷ 2 | 910.5 | 84.6 |
| 150% GenoaTypical light-air headsail | 1,365.7 | 126.9 |
| Storm Jib~50% of foretriangle, high-cut | 455.2 | 42.3 |
| Symmetric SpinnakerEstimated from I, J | 3,277.6 | 304.5 |
| Total Working Sail AreaMain + 100% foretriangle | 2,096.9 | 194.8 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Fractional Sloop · Farr Yacht Design, Ltd. design
Performance Ratios
How the Cm 60 carries its sail relative to its displacement.
SA/D Ratio
34.6
Performance-oriented — carries a lot of sail for its weight.
Mast Height (above DWL)
— ft
Air draft not published — measure yours before any bridge transit.
Ballast Ratio
58%
Race-oriented ballast ratio — stiff and powerful.
Typical Sail Inventory
What Cm 60 owners usually carry and what's worth buying used vs. new.
Mainsail 1,186.5 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 1,365.7 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~1,002 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 455.2 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~3,278 ft²
Popular downwind upgrade — easier than symmetric for shorthanded sailing.
Optional
Replacement Cost Estimator
Get a rough price range for a new mainsail and genoa for the Cm 60 — Dacron, laminate, and cruising performance tiers.