Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
52.72 ft
J ?
14.93 ft
P ?
51.25 ft
E ?
19.68 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 | 504.3 | 46.9 |
| 100% ForetriangleI × J ÷ 2 | 393.6 | 36.6 |
| 150% GenoaTypical light-air headsail | 590.3 | 54.8 |
| Storm Jib~50% of foretriangle, high-cut | 196.8 | 18.3 |
| Symmetric SpinnakerEstimated from I, J | 1,416.8 | 131.6 |
| Total Working Sail AreaMain + 100% foretriangle | 897.9 | 83.4 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Fractional Sloop · Von Ahlen Yacht Design/Stile Bertone design
Performance Ratios
How the Etap 48Ds carries its sail relative to its displacement.
SA/D Ratio
14.3
Moderate — comfortable coastal cruiser, not overcanvassed.
Mast Height (above DWL)
65.1 ft
Tight on the 65 ft ICW standard — check tide before transiting.
Ballast Ratio
32%
Typical cruising ballast — balanced stability underway.
Typical Sail Inventory
What Etap 48Ds owners usually carry and what's worth buying used vs. new.
Mainsail 504.3 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 590.3 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~433 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 196.8 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~1,417 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 Etap 48Ds — Dacron, laminate, and cruising performance tiers.