Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
46.67 ft
J ?
12.08 ft
P ?
47.42 ft
E ?
17.75 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 | 420.9 | 39.1 |
| 100% ForetriangleI × J ÷ 2 | 281.9 | 26.2 |
| 150% GenoaTypical light-air headsail | 422.8 | 39.3 |
| Storm Jib~50% of foretriangle, high-cut | 140.9 | 13.1 |
| Symmetric SpinnakerEstimated from I, J | 1,014.8 | 94.3 |
| Total Working Sail AreaMain + 100% foretriangle | 702.7 | 65.3 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Sloop · Glenn Henderson design
Performance Ratios
How the Hunter 38 carries its sail relative to its displacement.
SA/D Ratio
22.9
Performance-oriented — carries a lot of sail for its weight.
Mast Height (above DWL)
59.1 ft
Clears the 65 ft ICW fixed-bridge standard at normal tide.
Ballast Ratio
33%
Typical cruising ballast — balanced stability underway.
Typical Sail Inventory
What Hunter 38 owners usually carry and what's worth buying used vs. new.
Mainsail 420.9 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 422.8 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~310 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 140.9 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~1,015 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 Hunter 38 — Dacron, laminate, and cruising performance tiers.