Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
40.00 ft
J ?
11.60 ft
P ?
34.50 ft
E ?
14.00 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 | 241.5 | 22.4 |
| 100% ForetriangleI × J ÷ 2 | 232.0 | 21.6 |
| 150% GenoaTypical light-air headsail | 348.0 | 32.3 |
| Storm Jib~50% of foretriangle, high-cut | 116.0 | 10.8 |
| Symmetric SpinnakerEstimated from I, J | 835.2 | 77.6 |
| Total Working Sail AreaMain + 100% foretriangle | 473.5 | 44.0 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Masthead Sloop · Sparkman & Stephens design
Performance Ratios
How the Capri 30 Chris Craft carries its sail relative to its displacement.
SA/D Ratio
14.7
Moderate — comfortable coastal cruiser, not overcanvassed.
Mast Height (above DWL)
42.9 ft
Clears the 65 ft ICW fixed-bridge standard with room to spare.
Ballast Ratio
34%
Typical cruising ballast — balanced stability underway.
Typical Sail Inventory
What Capri 30 Chris Craft owners usually carry and what's worth buying used vs. new.
Mainsail 241.5 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 348.0 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~255 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 116.0 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~835 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 Capri 30 Chris Craft — Dacron, laminate, and cruising performance tiers.