Obelix - NOR10852
Sailing performance analysis for a X-37 dyp kjøl (series year 2004), built by X-yachts and designed by Niels Jeppesen.
Data provided by the Offshore Racing Congress (ORC) · Certificate issued 21/05/2026
The description is written by AI, but its numbers and comparisons are calculated before the text is generated.
The speed ranking comes from the ORC polar at 5 m/s and is compared with 318 Norwegian boats within ±5% of this boat's length. Upwind and downwind use VMG; reaching uses boat speed.
The scoring advantage is calculated using APH Time-on-Time against 145 Norwegian boats with similar APH from certificate year 2026. It is shown only when the advantage is clear across most of the condition range.
This is modelled performance, not a forecast. Course, waves, sails, crew, and tactics still matter.
X-37 dyp kjøl is among the top 10 percent upwind and the top 20 percent downwind compared to boats of similar length. At 10 knots of wind, it sails at 6.4 knots upwind, 7.5 knots reaching, and 5.5 knots downwind. It has an advantage on corrected scoring in 6–8 knots of wind when the course includes plenty of close-reaching.
Sailing performance as a polar diagram
A polar diagram shows boat speed at different wind angles and wind speeds. The distance from center represents boat speed in knots, and the angle represents the boats angle to the wind. The wind speed is shown as true wind speed (TWS), not apparent wind speed. Likewise, the wind angle is shown as true wind angle (TWA), not apparent wind angle.
Beat: Sailing upwind (toward the wind)
Beam Reach: Sailing across the wind
Run: Sailing downwind (away from the wind)
VMG Performance
Wind Speed (columns): True wind speed (TWS) in knots - the actual wind speed, not the apparent wind you feel on deck.
VMG (Velocity Made Good) is your effective speed toward your destination, not your actual boat speed.
Beat VMG (top bars): Speed made good when sailing upwind. Higher is better - it means you're reaching the windward mark faster.
Run VMG (bottom bars): Speed made good when sailing downwind. Higher is better - it means you're reaching the leeward mark faster.
Measured sails
Measurements
🏁 Race Results
| Date | Event | Result | Class | Skipper |
|---|---|---|---|---|
| 2026 | ||||
| 29.05.2026 | Norgesmesterskap Doublehanded/Seilmakeren Doublehanded | 16/21 | Stor | Knut Erik HJORT |
| 21.03.2026 | Isbjørnen 2026 | 8/12 | NorRating m/spinnaker | Knut Erik Hjort |
| 2025 | ||||
| 29.11.2025 | Nisseseilasen 2025 | 4/11 | NorRating med spinnaker | Knut Erik HJORTH |
| 11.10.2025 | Engelsen Anlegg Windjammer 2025 | 6/11 | NOR Rating APH - m/u spinnaker | Knut Erik Hjorth |
| 16.08.2025 | Askøy Rundt 2025 | 5/7 | NOR-rating 1,102 -> | Knut Erik Hjorth |
| 2024 | ||||
| 30.11.2024 | Nisseseilasen 2024 | 8/11 | NorRating med spinnaker | Knut Erik HJORTH |
Race results from manage2sail.com & sailracesystem.no
Identity
Dimensions
Sail Areas
ORC Rating
Rated boat speeds
| Wind Speed (TWS) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 4 kt | 6 kt | 8 kt | 10 kt | 12 kt | 14 kt | 16 kt | 20 kt | 24 kt | |
| Beat VMG | 2.71 | 3.79 | 4.53 | 4.94 | 5.10 | 5.19 | 5.24 | 5.27 | 5.16 |
| 52° | 4.24 | 5.71 | 6.64 | 7.08 | 7.24 | 7.32 | 7.38 | 7.44 | 7.42 |
| 60° | 4.55 | 5.98 | 6.86 | 7.27 | 7.44 | 7.53 | 7.59 | 7.66 | 7.64 |
| 75° | 4.77 | 6.17 | 7.00 | 7.43 | 7.66 | 7.79 | 7.89 | 8.01 | 8.07 |
| 90° | 4.64 | 6.07 | 6.95 | 7.43 | 7.74 | 7.97 | 8.15 | 8.38 | 8.52 |
| 110° | 4.18 | 5.81 | 6.92 | 7.51 | 7.88 | 8.14 | 8.33 | 8.63 | 8.91 |
| 120° | 4.01 | 5.61 | 6.76 | 7.42 | 7.84 | 8.20 | 8.54 | 9.02 | 9.38 |
| 135° | 3.48 | 5.01 | 6.19 | 7.05 | 7.57 | 7.97 | 8.38 | 9.25 | 10.27 |
| 150° | 2.87 | 4.22 | 5.39 | 6.38 | 7.12 | 7.59 | 7.97 | 8.78 | 9.73 |
| Run VMG | 2.48 | 3.66 | 4.67 | 5.54 | 6.29 | 6.90 | 7.39 | 8.11 | 8.86 |
Boat speed (knots) at wind angle / wind speed