Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
24.75 ft
J ?
8.66 ft
P ?
25.00 ft
E ?
7.50 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 | 93.8 | 8.7 |
| 100% ForetriangleI × J ÷ 2 | 107.2 | 10.0 |
| 150% GenoaTypical light-air headsail | 160.8 | 14.9 |
| Storm Jib~50% of foretriangle, high-cut | 53.6 | 5.0 |
| Symmetric SpinnakerEstimated from I, J | 385.8 | 35.8 |
| Total Working Sail AreaMain + 100% foretriangle | 200.9 | 18.7 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Fractional Sloop
Performance Ratios
How the Us 22 Sd carries its sail relative to its displacement.
SA/D Ratio
17.8
Moderate — comfortable coastal cruiser, not overcanvassed.
Mast Height (above DWL)
31.3 ft
Clears the 65 ft ICW fixed-bridge standard with room to spare.
Ballast Ratio
39%
Stiff enough to carry a 150% genoa comfortably into moderate breeze.
Typical Sail Inventory
What Us 22 Sd owners usually carry and what's worth buying used vs. new.
Mainsail 93.8 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 160.8 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~118 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 53.6 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~386 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 Us 22 Sd — Dacron, laminate, and cruising performance tiers.