Lidi
ISR X-41Sail number ISR/ISR1
Stored record updated May 13, 2026 UTC.
GPH
565.6
OSN
551.8
LOA
12.35 m
Displacement
6951 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.7365
Medium
0.9644
High
1.0729
Triple Offshore
Low
0.9481
Medium
1.1887
High
1.3063
Boat Specifications
Dimensions
- Length overall
- 12.35 m
- Beam
- 3.65 m
- Draft
- 2.5 m
- Displacement
- 6951 kg
- Crew weight
- 769 kg
- Wetted surface
- 32.49 m²
Sails
- Mainsail
- 53.05 m²
- Genoa
- 44.76 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 133.94 m²
Design
- Type
- X-41
- Builder
- X YACHTS
- Designer
- JEPPESEN
- Year built
- 2006
- Stability index
- 123.4
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 | 5.98 | 6.27 | 6.47 | 6.69 | 6.47 | 6.15 | 5.53 | 4.67 |
| 8 | 7 | 7.23 | 7.41 | 7.62 | 7.52 | 7.37 | 6.84 | 5.9 |
| 10 | 7.49 | 7.7 | 7.85 | 8.08 | 8.09 | 8.03 | 7.69 | 6.94 |
| 12 | 7.68 | 7.89 | 8.14 | 8.33 | 8.54 | 8.54 | 8.24 | 7.64 |
| 14 | 7.78 | 8 | 8.32 | 8.51 | 8.94 | 9.01 | 8.77 | 8.08 |
| 16 | 7.84 | 8.07 | 8.44 | 8.75 | 9.3 | 9.4 | 9.34 | 8.45 |
| 20 | 7.89 | 8.14 | 8.58 | 9.05 | 9.85 | 10.31 | 10.78 | 9.27 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 42.4° | 3.95 | 143.3° | 4.04 |
| 8 | 40.5° | 4.78 | 146.6° | 5.11 |
| 10 | 38.8° | 5.23 | 149.6° | 6.01 |
| 12 | 37.8° | 5.43 | 150.5° | 6.62 |
| 14 | 37.6° | 5.53 | 150.7° | 7 |
| 16 | 37.6° | 5.58 | 173° | 7.46 |
| 20 | 38.4° | 5.58 | 175.7° | 8.3 |
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 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) |
|---|---|---|---|---|---|---|---|
| 0° | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| 52° | 5.98 | 7.00 | 7.49 | 7.68 | 7.78 | 7.84 | 7.89 |
| 60° | 6.27 | 7.23 | 7.70 | 7.89 | 8.00 | 8.07 | 8.14 |
| 75° | 6.47 | 7.41 | 7.85 | 8.14 | 8.32 | 8.44 | 8.58 |
| 90° | 6.69 | 7.62 | 8.08 | 8.33 | 8.51 | 8.75 | 9.05 |
| 110° | 6.47 | 7.52 | 8.09 | 8.54 | 8.94 | 9.30 | 9.85 |
| 120° | 6.15 | 7.37 | 8.03 | 8.54 | 9.01 | 9.40 | 10.31 |
| 135° | 5.53 | 6.84 | 7.69 | 8.24 | 8.77 | 9.34 | 10.78 |
| 150° | 4.67 | 5.90 | 6.94 | 7.64 | 8.08 | 8.45 | 9.27 |