Heidi - NOR6123

Sailing performance analysis for a Dehler Optima 101 from 1986, built by Dehler Yachtbau and designed by VANDESTADT.

Compare with another boat

10.11

Length (LOA)

meters

3.406

Beam

meters

1.774

Draft

meters

4,390

Displacement

kilograms

Total Sail Area

square meters

Data provided by the Offshore Racing Congress (ORC)

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)

Wind Speed

4kt

6kt

8kt

10kt

12kt

14kt

16kt

20kt

24kt

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.

4 kt

2.27

6 kt

3.11

3.28

8 kt

3.76

4.19

10 kt

4.23

4.98

12 kt

4.56

5.69

14 kt

4.75

6.23

16 kt

4.83

6.64

20 kt

4.86

7.23

24 kt

4.78

7.79

⛵

Identity

NameHeidi

Sail #NOR6123

CountryNOR

BuilderDehler Yachtbau

DesignerVANDESTADT

Build Year1,986

Series Year1,986

📏

Dimensions

LOA10.11m

Beam3.41m

Draft1.77m

Disp.4,390kg

WS21.16m²

Crew503kg

⛵

Sail Areas

Genoa27.74m²

Main27.21m²

Spinnaker67.08m²

Total55.0m²

🏆

ORC Rating

GPHN/A

CDL7.73

APH ToT0.98

APH ToD611.9

OSN0.9

Triple Offshore

Light

0.7581

Medium

0.987

Heavy

1.1057

Triple Inshore

Light

0.5898

Medium

0.809

Heavy

0.9365

📈

Rated boat speeds

Wind angle (TWA)

	Wind Speed (TWS)
	4 kt	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt	24 kt
Beat VMG	2.27	3.11	3.76	4.23	4.56	4.75	4.83	4.86	4.78
52°	3.54	4.77	5.63	6.16	6.46	6.65	6.75	6.82	6.81
60°	3.76	5.02	5.87	6.34	6.61	6.80	6.92	7.02	7.04
75°	3.88	5.17	6.02	6.48	6.76	6.96	7.12	7.34	7.43
90°	3.73	5.08	6.06	6.60	6.90	7.09	7.20	7.54	7.80
110°	3.76	5.14	6.15	6.69	7.03	7.31	7.57	7.98	8.27
120°	3.61	4.96	5.99	6.61	6.98	7.28	7.58	8.22	8.81
135°	3.20	4.46	5.51	6.31	6.77	7.10	7.42	8.10	9.04
150°	2.62	3.79	4.84	5.73	6.40	6.81	7.12	7.72	8.47
Run VMG	2.27	3.28	4.19	4.98	5.69	6.23	6.64	7.23	7.79

Boat speed (knots) at wind angle / wind speed