Swai - NOR517
Sailing performance analysis for a J-80 OD from 1997, built by J Composites and designed by JOHNSTONE.
Data provided by the Offshore Racing Congress (ORC) · Certificate issued 16/04/2026
This performance sailboat is light for its length, showing impressive speeds. It can reach up to 6.96 knots on a reach in 10 knots of wind and tops out at 10.98 knots in stronger conditions. The large asymmetric spinnaker enhances downwind performance, although the compact jib is built to excel upwind. With planing potential, it's a thrilling choice for sailors seeking speed and agility.
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 | ||||
| 01.09.2026 | Bodø Seilforening tirsdagsseilaser 2026 | 5/11 | Klasse 1 | Remii Rasmussen |
| 29.08.2026 | Bodø Seilforenings Jubileumsregatta 2026 | 4/8 | 1 | Remi Rasmussen |
| 27.06.2026 | Vestfjordseilasen | 10/10 | Regatta med spinnaker 1 | Remi Rasmussen |
| 2025 | ||||
| 30.09.2025 | Bodø Seilforening tirsdagsseilaser 2025 | 4/8 | Klasse 1 | Remi Rasmussen |
| 2024 | ||||
| 01.10.2024 | Bodø Seilforening Tirsdagsserie 2024 | 7/8 | Klasse 1 | Remi Rasmussen |
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 | 2.28 | 3.23 | 3.92 | 4.37 | 4.53 | 4.60 | 4.63 | 4.64 | 4.46 |
| 52° | 3.57 | 4.92 | 5.76 | 6.19 | 6.35 | 6.43 | 6.48 | 6.53 | 6.47 |
| 60° | 3.84 | 5.18 | 5.96 | 6.35 | 6.53 | 6.62 | 6.69 | 6.77 | 6.75 |
| 75° | 4.03 | 5.34 | 6.09 | 6.49 | 6.76 | 6.94 | 7.05 | 7.21 | 7.28 |
| 90° | 3.99 | 5.50 | 6.26 | 6.53 | 6.85 | 7.15 | 7.40 | 7.78 | 8.02 |
| 110° | 4.11 | 5.67 | 6.49 | 6.96 | 7.29 | 7.61 | 7.93 | 8.59 | 9.20 |
| 120° | 4.00 | 5.55 | 6.45 | 7.02 | 7.52 | 8.03 | 8.49 | 9.40 | 10.32 |
| 135° | 3.57 | 5.03 | 6.07 | 6.73 | 7.33 | 8.04 | 8.96 | 10.98 | 12.77 |
| 150° | 2.97 | 4.27 | 5.34 | 6.14 | 6.72 | 7.22 | 7.83 | 10.08 | 13.66 |
| Run VMG | 2.57 | 3.70 | 4.62 | 5.33 | 5.85 | 6.26 | 6.78 | 8.73 | 11.83 |
Boat speed (knots) at wind angle / wind speed