Banzai - NOR6478

Sailing performance analysis for a Gambler 37 from 1986, built by Ledinbåtar AB and designed by Peter Norlin.

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11.51

Length (LOA)

meters

3.65

Beam

meters

2.23

Draft

meters

6,505

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

2.77

2.47

6 kt

3.74

3.55

8 kt

4.43

4.51

10 kt

4.83

5.33

12 kt

5.01

6.06

14 kt

5.11

6.62

16 kt

5.17

7.03

20 kt

5.24

7.64

24 kt

5.22

8.24

⛵

Identity

NameBanzai

Sail #NOR6478

CountryNOR

BuilderLedinbåtar AB

DesignerPeter Norlin

Build Year1,986

Series Year1,986

📏

Dimensions

LOA11.51m

Beam3.65m

Draft2.23m

Disp.6,505kg

WS26.07m²

Crew611kg

⛵

Sail Areas

Genoa43.93m²

Main46.07m²

Spinnaker89.82m²

Total90.0m²

🏆

ORC Rating

GPHN/A

CDL8.99

APH ToT1.06

APH ToD565.7

OSN0.98

Triple Offshore

Light

0.8549

Medium

1.0667

Heavy

1.1689

Triple Inshore

Light

0.6683

Medium

0.884

Heavy

1.0006

📈

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	2.77	3.74	4.43	4.83	5.01	5.11	5.17	5.24	5.22
52°	4.25	5.59	6.40	6.77	6.93	7.01	7.07	7.14	7.16
60°	4.51	5.83	6.57	6.90	7.07	7.16	7.22	7.31	7.35
75°	4.68	6.00	6.69	7.02	7.22	7.36	7.45	7.59	7.69
90°	4.55	5.89	6.66	7.04	7.29	7.48	7.64	7.88	8.06
110°	4.17	5.63	6.62	7.10	7.41	7.66	7.87	8.16	8.42
120°	3.99	5.44	6.48	7.03	7.38	7.67	7.96	8.51	8.88
135°	3.51	4.87	5.97	6.73	7.17	7.50	7.82	8.52	9.39
150°	2.86	4.10	5.20	6.13	6.80	7.20	7.51	8.15	8.96
Run VMG	2.47	3.55	4.51	5.33	6.06	6.62	7.03	7.64	8.24

Boat speed (knots) at wind angle / wind speed