Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
56.33 ft
J ?
22.00 ft
P ?
59.00 ft
E ?
20.00 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 | 590.0 | 54.8 |
| 100% ForetriangleI × J ÷ 2 | 619.6 | 57.6 |
| 150% GenoaTypical light-air headsail | 929.4 | 86.3 |
| Storm Jib~50% of foretriangle, high-cut | 309.8 | 28.8 |
| Symmetric SpinnakerEstimated from I, J | 2,230.7 | 207.2 |
| Total Working Sail AreaMain + 100% foretriangle | 1,209.6 | 112.4 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Cutter · Ted Irwin design
Performance Ratios
How the Irwin 52 2 carries its sail relative to its displacement.
SA/D Ratio
14.5
Moderate — comfortable coastal cruiser, not overcanvassed.
Mast Height (above DWL)
67.0 ft
Tight on the 65 ft ICW standard — check tide before transiting.
Ballast Ratio
—
Ballast ratio not published.
Typical Sail Inventory
What Irwin 52 2 owners usually carry and what's worth buying used vs. new.
Mainsail 590.0 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 929.4 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~682 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 309.8 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~2,231 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 Irwin 52 2 — Dacron, laminate, and cruising performance tiers.