Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
34.00 ft
J ?
6.50 ft
P ?
34.50 ft
E ?
19.00 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 | 327.8 | 30.4 |
| 100% ForetriangleI × J ÷ 2 | 110.5 | 10.3 |
| 150% GenoaTypical light-air headsail | 165.8 | 15.4 |
| Storm Jib~50% of foretriangle, high-cut | 55.3 | 5.1 |
| Symmetric SpinnakerEstimated from I, J | 397.8 | 37.0 |
| Total Working Sail AreaMain + 100% foretriangle | 438.3 | 40.7 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Fractional Sloop · Bill Symons design
Performance Ratios
How the Intercat 1500 carries its sail relative to its displacement.
SA/D Ratio
22.8
Performance-oriented — carries a lot of sail for its weight.
Mast Height (above DWL)
46.7 ft
Clears the 65 ft ICW fixed-bridge standard with room to spare.
Ballast Ratio
—
Ballast ratio not published.
Typical Sail Inventory
What Intercat 1500 owners usually carry and what's worth buying used vs. new.
Mainsail 327.8 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 165.8 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~122 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 55.3 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~398 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 Intercat 1500 — Dacron, laminate, and cruising performance tiers.