Cara Mia - NOR2384
Sailing performance analysis for a AVANCE 24 from 1977, built by Øjabåtar and designed by Peter Norlin.
Data provided by the Offshore Racing Congress (ORC) · Certificate issued 18/03/2025
This motorsailer offers a steady ride with a focus on comfort rather than speed. It moves at 4.7 knots upwind in 10 knots of wind, and reaches 4.32 knots downwind in the same conditions, showing its moderate pace. Equipped with a symmetric spinnaker, the boat's downwind performance is modest, with the sail size being average for its class. The genoa is notably large in comparison to the mainsail, which aids its performance when sailing upwind.
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 | 1.92 | 2.63 | 3.17 | 3.56 | 3.84 | 4.00 | 4.05 | 4.06 | 3.96 |
| 52° | 2.95 | 3.99 | 4.73 | 5.22 | 5.49 | 5.64 | 5.72 | 5.76 | 5.74 |
| 60° | 3.12 | 4.18 | 4.92 | 5.38 | 5.63 | 5.78 | 5.88 | 5.94 | 5.94 |
| 75° | 3.20 | 4.29 | 5.04 | 5.51 | 5.76 | 5.94 | 6.07 | 6.22 | 6.27 |
| 90° | 3.12 | 4.30 | 5.19 | 5.68 | 5.93 | 6.08 | 6.17 | 6.41 | 6.56 |
| 110° | 3.17 | 4.34 | 5.20 | 5.71 | 6.02 | 6.27 | 6.48 | 6.78 | 6.97 |
| 120° | 3.03 | 4.18 | 5.07 | 5.62 | 5.95 | 6.22 | 6.48 | 6.92 | 7.32 |
| 135° | 2.69 | 3.77 | 4.67 | 5.36 | 5.77 | 6.06 | 6.33 | 6.85 | 7.38 |
| 150° | 2.28 | 3.28 | 4.19 | 4.93 | 5.48 | 5.83 | 6.10 | 6.59 | 7.09 |
| Run VMG | 1.97 | 2.84 | 3.64 | 4.32 | 4.92 | 5.39 | 5.73 | 6.23 | 6.68 |
Boat speed (knots) at wind angle / wind speed