Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
51.67 ft
J ?
13.83 ft
P ?
49.25 ft
E ?
15.92 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 | 392.0 | 36.4 |
| 100% ForetriangleI × J ÷ 2 | 357.3 | 33.2 |
| 150% GenoaTypical light-air headsail | 535.9 | 49.8 |
| Storm Jib~50% of foretriangle, high-cut | 178.6 | 16.6 |
| Symmetric SpinnakerEstimated from I, J | 1,286.3 | 119.5 |
| Total Working Sail AreaMain + 100% foretriangle | 749.3 | 69.6 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Fractional Sloop · M. Lombard / V. Garroni design
Performance Ratios
How the Sun Odyssey 39 Ds Perf Jeanneau carries its sail relative to its displacement.
SA/D Ratio
19.9
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
29%
Light ballast — tends to be tender; reef earlier.
Typical Sail Inventory
What Sun Odyssey 39 Ds Perf Jeanneau owners usually carry and what's worth buying used vs. new.
Mainsail 392.0 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 535.9 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~393 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 178.6 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~1,286 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 Sun Odyssey 39 Ds Perf Jeanneau — Dacron, laminate, and cruising performance tiers.