Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
59.06 ft
J ?
16.34 ft
P ?
56.56 ft
E ?
18.95 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 | 535.9 | 49.8 |
| 100% ForetriangleI × J ÷ 2 | 482.5 | 44.8 |
| 150% GenoaTypical light-air headsail | 723.8 | 67.2 |
| Storm Jib~50% of foretriangle, high-cut | 241.3 | 22.4 |
| Symmetric SpinnakerEstimated from I, J | 1,737.1 | 161.4 |
| Total Working Sail AreaMain + 100% foretriangle | 1,018.4 | 94.6 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Fractional Sloop · German Frers design
Performance Ratios
How the New York Yacht Club 42 Frers carries its sail relative to its displacement.
SA/D Ratio
25.8
Performance-oriented — carries a lot of sail for its weight.
Mast Height (above DWL)
— ft
Air draft not published — measure yours before any bridge transit.
Ballast Ratio
44%
Stiff enough to carry a 150% genoa comfortably into moderate breeze.
Typical Sail Inventory
What New York Yacht Club 42 Frers owners usually carry and what's worth buying used vs. new.
Mainsail 535.9 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 723.8 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~531 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 241.3 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~1,737 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 New York Yacht Club 42 Frers — Dacron, laminate, and cruising performance tiers.