Rigging Dimensions
The four foretriangle measurements sailmakers need to quote a new suit.
I ?
38.45 ft
J ?
11.35 ft
P ?
33.62 ft
E ?
10.17 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 | 171.0 | 15.9 |
| 100% ForetriangleI × J ÷ 2 | 218.2 | 20.3 |
| 150% GenoaTypical light-air headsail | 327.3 | 30.4 |
| Storm Jib~50% of foretriangle, high-cut | 109.1 | 10.1 |
| Symmetric SpinnakerEstimated from I, J | 785.5 | 73.0 |
| Total Working Sail AreaMain + 100% foretriangle | 389.2 | 36.2 |
Foretriangle Diagram
Drawn to scale from published I, J, P, E measurements — Masthead Sloop · Joubert/Nivelt design
Performance Ratios
How the Tanzer 29 carries its sail relative to its displacement.
SA/D Ratio
18.6
Powerful cruiser/racer — quick in light air, reef early in a blow.
Mast Height (above DWL)
41.5 ft
Clears the 65 ft ICW fixed-bridge standard with room to spare.
Ballast Ratio
37%
Typical cruising ballast — balanced stability underway.
Typical Sail Inventory
What Tanzer 29 owners usually carry and what's worth buying used vs. new.
Mainsail 171.0 ft²
Dacron cross-cut with 2 reef points is standard. Full-batten is a common upgrade.
Replace new
150% Genoa 327.3 ft²
The workhorse headsail. Most boats have one on a furler by now.
Replace new
110% Working Jib ~240 ft²
Good secondary sail for breezy days — used market is strong.
Buy used
Storm Jib 109.1 ft²
Bright orange recommended. Rarely used, hard to justify new.
Buy used
Asymmetric Spinnaker ~786 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 Tanzer 29 — Dacron, laminate, and cruising performance tiers.