Brísing 3 - NOR451
Sailing performance analysis for a Express (series year 1979), built by Albin and designed by Norlin.
Data provided by the Offshore Racing Congress (ORC) · Certificate issued 08/08/2025
This comfort cruiser offers a balanced sailing experience, designed for those who appreciate smooth handling. Upwind, it sails at 5.26 knots in 10 knots of wind, ensuring steady progress. Though it struggles a bit downwind, especially with a symmetric spinnaker, it shows potential to plane at higher speeds, reaching 8.22 knots in 20 knots of wind. The sail plan is well-balanced with a symmetric spinnaker and a jib that complements the mainsail.
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
Spinnaker measurements were not supported before this season's certificates. If no spinnaker is shown, that's why.
Measurements
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 | 2.18 | 2.99 | 3.62 | 4.05 | 4.27 | 4.35 | 4.38 | 4.36 | 4.22 |
| 52° | 3.38 | 4.56 | 5.38 | 5.80 | 6.01 | 6.10 | 6.15 | 6.19 | 6.14 |
| 60° | 3.60 | 4.80 | 5.58 | 5.95 | 6.15 | 6.28 | 6.34 | 6.40 | 6.38 |
| 75° | 3.74 | 4.95 | 5.71 | 6.07 | 6.31 | 6.50 | 6.63 | 6.77 | 6.81 |
| 90° | 3.75 | 5.01 | 5.84 | 6.23 | 6.44 | 6.59 | 6.80 | 7.11 | 7.27 |
| 110° | 3.76 | 5.04 | 5.91 | 6.34 | 6.68 | 6.98 | 7.22 | 7.56 | 7.85 |
| 120° | 3.57 | 4.86 | 5.78 | 6.26 | 6.64 | 7.00 | 7.36 | 8.05 | 8.64 |
| 135° | 3.12 | 4.33 | 5.30 | 6.01 | 6.41 | 6.78 | 7.17 | 8.22 | 10.26 |
| 150° | 2.53 | 3.64 | 4.66 | 5.52 | 6.09 | 6.46 | 6.81 | 7.59 | 9.13 |
| Run VMG | 2.18 | 3.16 | 4.04 | 4.80 | 5.49 | 5.96 | 6.32 | 6.97 | 7.91 |
Boat speed (knots) at wind angle / wind speed