Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
64.53 ft
J ?
17.85 ft
P ?
56.76 ft
E ?
21.16 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 | 600.5 | 55.8 |
| 100% ForetriangleI × J ÷ 2 | 575.9 | 53.5 |
| 150% GenoaTypical light-air headsail | 863.9 | 80.3 |
| Storm Jib~50% of foretriangle, high-cut | 288.0 | 26.8 |
| Symmetric SpinnakerEstimated from I, J | 2,073.3 | 192.6 |
| Total Working Sail AreaMain + 100% foretriangle | 1,176.5 | 109.3 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Masthead Sloop · Philippe Briand design
Performance Ratios
How the Sun Fast 52 Jeanneau carries its sail relative to its displacement.
SA/D Ratio
20.2
Powerful cruiser/racer — quick in light air, reef early in a blow.
Mast Height (above DWL)
68.9 ft
Tight on the 65 ft ICW standard — check tide before transiting.
Ballast Ratio
39%
Stiff enough to carry a 150% genoa comfortably into moderate breeze.
Typical Sail Inventory
What Sun Fast 52 Jeanneau owners usually carry and what's worth buying used vs. new.
Mainsail 600.5 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 863.9 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~634 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 288.0 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~2,073 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 Sun Fast 52 Jeanneau — Dacron, laminate, and cruising performance tiers.