Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
59.42 ft
J ?
21.58 ft
P ?
52.00 ft
E ?
18.00 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 | 468.0 | 43.5 |
| 100% ForetriangleI × J ÷ 2 | 641.1 | 59.6 |
| 150% GenoaTypical light-air headsail | 961.7 | 89.3 |
| Storm Jib~50% of foretriangle, high-cut | 320.6 | 29.8 |
| Symmetric SpinnakerEstimated from I, J | 2,308.1 | 214.4 |
| Total Working Sail AreaMain + 100% foretriangle | 1,109.1 | 103.0 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Masthead Sloop · Johan Valentijn design
Performance Ratios
How the Endeavour 52 carries its sail relative to its displacement.
SA/D Ratio
16.7
Moderate — comfortable coastal cruiser, not overcanvassed.
Mast Height (above DWL)
66.4 ft
Tight on the 65 ft ICW standard — check tide before transiting.
Ballast Ratio
41%
Stiff enough to carry a 150% genoa comfortably into moderate breeze.
Typical Sail Inventory
What Endeavour 52 owners usually carry and what's worth buying used vs. new.
Mainsail 468.0 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 961.7 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~705 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 320.6 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~2,308 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 Endeavour 52 — Dacron, laminate, and cruising performance tiers.