Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
26.73 ft
J ?
14.44 ft
P ?
1.00 ft
E ?
— 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 | — | — |
| 100% ForetriangleI × J ÷ 2 | 193.0 | 17.9 |
| 150% GenoaTypical light-air headsail | 289.5 | 26.9 |
| Storm Jib~50% of foretriangle, high-cut | 96.5 | 9.0 |
| Symmetric SpinnakerEstimated from I, J | 694.8 | 64.5 |
| Total Working Sail AreaMain + 100% foretriangle | — | — |
Foretriangle Diagram
Scale diagram unavailable — I, J, P, and E measurements are not all published for the Dehler 39.
Performance Ratios
How the Dehler 39 carries its sail relative to its displacement.
SA/D Ratio
26.7
Performance-oriented — carries a lot of sail for its weight.
Mast Height (above DWL)
60.0 ft
Clears the 65 ft ICW fixed-bridge standard at normal tide.
Ballast Ratio
42%
Stiff enough to carry a 150% genoa comfortably into moderate breeze.
Typical Sail Inventory
What Dehler 39 owners usually carry and what's worth buying used vs. new.
Mainsail — ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 289.5 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~212 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 96.5 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~695 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 Dehler 39 — Dacron, laminate, and cruising performance tiers.