Kompis - NOR2620
Sailing performance analysis for a CUMULUS from 1968, built by Albin Marin AB and designed by Peter Norlin.
Data provided by the Offshore Racing Congress (ORC)
A reliable comfort cruiser known for its stability and ease of handling. It reaches a speed of 6.6 knots on a reach in 10 knots of wind, making it a solid performer in moderate conditions. The boat is equipped with a symmetric spinnaker and features a large genoa compared to the mainsail, providing good power upwind. Its heavier displacement suggests a smooth and comfortable ride, though it may not excel in stronger winds.
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.
Identity
Dimensions
Sail Areas
ORC Rating
Rated boat speeds
| Wind Speed (TWS) | |||||||
|---|---|---|---|---|---|---|---|
| 6 kt | 8 kt | 10 kt | 12 kt | 14 kt | 16 kt | 20 kt | |
| Beat VMG | 3.03 | 3.59 | 4.02 | 4.24 | 4.32 | 4.33 | 4.25 |
| 52° | 4.57 | 5.35 | 5.85 | 6.05 | 6.13 | 6.17 | 6.15 |
| 60° | 4.80 | 5.60 | 6.01 | 6.20 | 6.30 | 6.35 | 6.35 |
| 75° | 4.97 | 5.77 | 6.13 | 6.34 | 6.50 | 6.61 | 6.70 |
| 90° | 4.90 | 5.75 | 6.21 | 6.44 | 6.58 | 6.76 | 7.04 |
| 110° | 4.84 | 5.81 | 6.28 | 6.57 | 6.86 | 7.09 | 7.33 |
| 120° | 4.69 | 5.68 | 6.21 | 6.51 | 6.81 | 7.11 | 7.58 |
| 135° | 4.27 | 5.19 | 5.94 | 6.31 | 6.60 | 6.91 | 7.53 |
| 150° | 3.68 | 4.59 | 5.38 | 6.00 | 6.33 | 6.60 | 7.19 |
| Run VMG | 3.18 | 3.99 | 4.69 | 5.35 | 5.92 | 6.27 | 6.80 |
Boat speed (knots) at wind angle / wind speed