Langbein - NOR81
Sailing performance analysis for a H-boat from 1991, built by Botnia and designed by Hans Groop.
Data provided by the Offshore Racing Congress (ORC) · Certificate issued 21/05/2026
A comfort cruiser with a balanced sail plan, including a modest symmetric spinnaker that suits its leisurely nature. This boat reaches 8.06 knots in strong winds, showcasing its ease in handling rather than speed. It sails at 4.98 knots upwind in 10 knots of wind, but downwind performance is less brisk. The jib is compact relative to the mainsail, aligning with its focus on comfortable cruising.
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🥇4
| Date | Event | Result | Class | Skipper |
|---|---|---|---|---|
| 2026 | ||||
| 02.09.2026 | Serieseilasen Bærum Seilforening 2026 | 1/9🥇 | Liten | Kjell Clement Ludvigsen |
| 20.05.2026 | Asker og Bærum Seilforening Superonsdag 2026 | 1/24🥇 | Liten Klasse | Kjell Clement Ludvigsen |
| 2025 | ||||
| 17.09.2025 | Maritim Serieseilasen 2025 | 1/18🥇 | Liten | Kjell Clement Ludvigsen |
| 14.05.2025 | Asker Seilforening og Bærum Seilforening Superonsdag | 6/31 | LITEN | Kjell Clement Ludvigsen |
| 2024 | ||||
| 18.09.2024 | Bærum Seilforening Maritim Serieseilasen 2024 | 1/15🥇 | F | Kjell Clement Ludvigsen |
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 | 1.91 | 2.76 | 3.37 | 3.81 | 4.08 | 4.20 | 4.26 | 4.29 | 4.22 |
| 52° | 3.00 | 4.21 | 5.05 | 5.53 | 5.79 | 5.93 | 6.00 | 6.06 | 6.06 |
| 60° | 3.23 | 4.44 | 5.25 | 5.70 | 5.95 | 6.10 | 6.19 | 6.27 | 6.29 |
| 75° | 3.37 | 4.58 | 5.38 | 5.84 | 6.11 | 6.31 | 6.48 | 6.66 | 6.75 |
| 90° | 3.42 | 4.74 | 5.61 | 6.04 | 6.29 | 6.43 | 6.64 | 7.07 | 7.31 |
| 110° | 3.43 | 4.76 | 5.64 | 6.12 | 6.49 | 6.84 | 7.16 | 7.55 | 7.89 |
| 120° | 3.27 | 4.57 | 5.49 | 6.03 | 6.43 | 6.83 | 7.26 | 8.02 | 8.70 |
| 135° | 2.83 | 4.07 | 5.03 | 5.76 | 6.19 | 6.57 | 7.00 | 8.06 | 9.94 |
| 150° | 2.33 | 3.47 | 4.44 | 5.26 | 5.85 | 6.24 | 6.60 | 7.48 | 8.75 |
| Run VMG | 2.02 | 3.00 | 3.85 | 4.58 | 5.25 | 5.73 | 6.11 | 6.79 | 7.63 |
Boat speed (knots) at wind angle / wind speed