Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
33.80 ft
J ?
11.70 ft
P ?
38.20 ft
E ?
16.90 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 | 322.8 | 30.0 |
| 100% ForetriangleI × J ÷ 2 | 197.7 | 18.4 |
| 150% GenoaTypical light-air headsail | 296.6 | 27.6 |
| Storm Jib~50% of foretriangle, high-cut | 98.9 | 9.2 |
| Symmetric SpinnakerEstimated from I, J | 711.8 | 66.1 |
| Total Working Sail AreaMain + 100% foretriangle | 520.5 | 48.4 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Fractional Sloop · Sparkman & Stephens design
Performance Ratios
How the Maple Leaf One Design carries its sail relative to its displacement.
SA/D Ratio
18.3
Powerful cruiser/racer — quick in light air, reef early in a blow.
Mast Height (above DWL)
— ft
Air draft not published — measure yours before any bridge transit.
Ballast Ratio
—
Ballast ratio not published.
Typical Sail Inventory
What Maple Leaf One Design owners usually carry and what's worth buying used vs. new.
Mainsail 322.8 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 296.6 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~218 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 98.9 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~712 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 Maple Leaf One Design — Dacron, laminate, and cruising performance tiers.