ALMA LIBRE
GRE DUFOUR 38 classicSail number GRE/GRE908
Stored record updated May 13, 2026 UTC.
GPH
633.2
OSN
613
LOA
11.65 m
Displacement
6515 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6374
Medium
0.8734
High
1.0122
Triple Offshore
Low
0.822
Medium
1.0726
High
1.2038
Boat Specifications
Dimensions
- Length overall
- 11.65 m
- Beam
- 3.85 m
- Draft
- 1.88 m
- Displacement
- 6515 kg
- Crew weight
- 790 kg
- Wetted surface
- 28.56 m²
Sails
- Mainsail
- 31.78 m²
- Genoa
- 46.39 m²
- Spinnaker
- 92.53 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- DUFOUR 38 classic
- Builder
- DUFOUR SA
- Designer
- Chabaud/Poncin
- Year built
- 1997
Performance data
Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.24 | 5.55 | 5.74 | 5.62 | 5.44 | 5.29 | 4.79 | 4.05 |
| 8 | 6.2 | 6.47 | 6.64 | 6.57 | 6.59 | 6.44 | 5.93 | 5.17 |
| 10 | 6.79 | 6.99 | 7.14 | 7.13 | 7.26 | 7.17 | 6.79 | 6.11 |
| 12 | 7.12 | 7.29 | 7.44 | 7.48 | 7.67 | 7.61 | 7.34 | 6.85 |
| 14 | 7.31 | 7.48 | 7.66 | 7.72 | 7.99 | 7.97 | 7.72 | 7.34 |
| 16 | 7.39 | 7.59 | 7.84 | 7.94 | 8.28 | 8.3 | 8.07 | 7.7 |
| 20 | 7.46 | 7.68 | 8.05 | 8.32 | 8.7 | 8.93 | 8.79 | 8.35 |
| 24 | 7.45 | 7.71 | 8.16 | 8.56 | 8.98 | 9.48 | 9.68 | 9.07 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 44.3° | 3.4 | 144.4° | 3.51 |
| 8 | 42.5° | 4.12 | 148.9° | 4.47 |
| 10 | 40.9° | 4.65 | 151.8° | 5.3 |
| 12 | 39.2° | 5.01 | 156.5° | 6.01 |
| 14 | 38.6° | 5.17 | 165.5° | 6.6 |
| 16 | 38.2° | 5.25 | 176.3° | 7.12 |
| 20 | 39° | 5.28 | 178.6° | 7.82 |
| 24 | 40.1° | 5.19 | 178.6° | 8.43 |
VPP POLAR · BOAT SPEED BY TWAKT
Hover or tap the chart, or use the slider, to read boat speeds.
True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt24 kt
Data table
| TWA | Boat speed in 6 kt (kt) | Boat speed in 8 kt (kt) | Boat speed in 10 kt (kt) | Boat speed in 12 kt (kt) | Boat speed in 14 kt (kt) | Boat speed in 16 kt (kt) | Boat speed in 20 kt (kt) | Boat speed in 24 kt (kt) |
|---|---|---|---|---|---|---|---|---|
| 0° | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| 52° | 5.24 | 6.20 | 6.79 | 7.12 | 7.31 | 7.39 | 7.46 | 7.45 |
| 60° | 5.55 | 6.47 | 6.99 | 7.29 | 7.48 | 7.59 | 7.68 | 7.71 |
| 75° | 5.74 | 6.64 | 7.14 | 7.44 | 7.66 | 7.84 | 8.05 | 8.16 |
| 90° | 5.62 | 6.57 | 7.13 | 7.48 | 7.72 | 7.94 | 8.32 | 8.56 |
| 110° | 5.44 | 6.59 | 7.26 | 7.67 | 7.99 | 8.28 | 8.70 | 8.98 |
| 120° | 5.29 | 6.44 | 7.17 | 7.61 | 7.97 | 8.30 | 8.93 | 9.48 |
| 135° | 4.79 | 5.93 | 6.79 | 7.34 | 7.72 | 8.07 | 8.79 | 9.68 |
| 150° | 4.05 | 5.17 | 6.11 | 6.85 | 7.34 | 7.70 | 8.35 | 9.07 |