Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
59.38 ft
J ?
18.04 ft
P ?
58.01 ft
E ?
20.51 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 | 594.9 | 55.3 |
| 100% ForetriangleI × J ÷ 2 | 535.6 | 49.8 |
| 150% GenoaTypical light-air headsail | 803.4 | 74.6 |
| Storm Jib~50% of foretriangle, high-cut | 267.8 | 24.9 |
| Symmetric SpinnakerEstimated from I, J | 1,928.2 | 179.1 |
| Total Working Sail AreaMain + 100% foretriangle | 1,130.5 | 105.0 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Fractional Sloop · Judel/Vrolijk design
Performance Ratios
How the Dehler 46 Sq carries its sail relative to its displacement.
SA/D Ratio
23.4
Performance-oriented — carries a lot of sail for its weight.
Mast Height (above DWL)
69.7 ft
Tight on the 65 ft ICW standard — check tide before transiting.
Ballast Ratio
30%
Typical cruising ballast — balanced stability underway.
Typical Sail Inventory
What Dehler 46 Sq owners usually carry and what's worth buying used vs. new.
Mainsail 594.9 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 803.4 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~589 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 267.8 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~1,928 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 46 Sq — Dacron, laminate, and cruising performance tiers.