NN - NOR15921
Sailing performance analysis for a Knarr Variant from 1946, built by Grimsøykilens båtv and designed by Erling Kristoffers.
Data provided by the Offshore Racing Congress (ORC)
This cruiser-racer is light for its length, offering a balanced sailing experience. It reaches a speed of 6.6 knots on a reach in 10 knots of wind, making it a versatile performer. The boat features a symmetric spinnaker, which is modest for its size, and a balanced sail plan with a compact jib relative to the mainsail. While not an upwind flyer, it still manages 5.3 knots upwind in moderate conditions.
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 | 2.93 | 3.49 | 3.81 | 3.93 | 3.97 | 3.97 | 3.99 |
| 52° | 4.46 | 5.27 | 5.72 | 5.89 | 5.96 | 5.99 | 6.03 |
| 60° | 4.72 | 5.54 | 5.95 | 6.14 | 6.21 | 6.25 | 6.27 |
| 75° | 4.92 | 5.75 | 6.13 | 6.35 | 6.51 | 6.58 | 6.62 |
| 90° | 4.84 | 5.77 | 6.17 | 6.42 | 6.63 | 6.82 | 7.02 |
| 110° | 4.88 | 5.88 | 6.33 | 6.64 | 6.81 | 6.96 | 7.14 |
| 120° | 4.70 | 5.75 | 6.28 | 6.61 | 6.92 | 7.17 | 7.43 |
| 135° | 4.25 | 5.22 | 5.99 | 6.39 | 6.72 | 7.06 | 7.67 |
| 150° | 3.63 | 4.55 | 5.41 | 6.05 | 6.40 | 6.72 | 7.33 |
| Run VMG | 3.14 | 3.94 | 4.70 | 5.38 | 5.96 | 6.33 | 6.93 |
Boat speed (knots) at wind angle / wind speed