Linda - NOR6379

Sailing performance analysis for a FIRST 305 from 1985, built by Jeanneau and designed by BERRETJEAN.

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9.3

Length (LOA)

meters

3.22

Beam

meters

1.76

Draft

meters

4,024

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

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.

6 kt

2.98

3.11

8 kt

3.63

3.99

10 kt

4.08

4.80

12 kt

4.36

5.50

14 kt

4.48

6.03

16 kt

4.54

6.44

20 kt

4.52

7.01

24 kt

4.42

7.53

⛵

Identity

NameLinda

Sail #NOR6379

CountryNOR

BuilderJeanneau

DesignerBERRETJEAN

Build Year1,985

Series Year—

📏

Dimensions

LOA9.3m

Beam3.22m

Draft1.76m

Disp.4,024kg

WS20.02m²

Crew461kg

⛵

Sail Areas

Genoa29.98m²

Main19.05m²

Spinnaker68.46m²

Total49.0m²

🏆

ORC Rating

GPH717.1

OSN693

Triple Offshore

Light

0.7247

Medium

0.9495

Heavy

1.0545

Triple Inshore

Light

0.5639

Medium

0.7766

Heavy

0.8904

📈

Rated boat speeds

Wind angle (TWA)

	Wind Speed (TWS)
	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt	24 kt
Beat VMG	2.98	3.63	4.08	4.36	4.48	4.54	4.52	4.42
52°	4.56	5.40	5.93	6.21	6.36	6.43	6.46	6.43
60°	4.79	5.63	6.10	6.36	6.52	6.61	6.66	6.67
75°	4.91	5.78	6.24	6.51	6.70	6.83	6.98	7.05
90°	4.81	5.73	6.30	6.58	6.75	6.93	7.20	7.38
110°	4.90	5.93	6.48	6.80	7.05	7.26	7.51	7.71
120°	4.74	5.81	6.43	6.78	7.07	7.34	7.82	8.12
135°	4.24	5.31	6.15	6.59	6.90	7.20	7.84	8.59
150°	3.59	4.61	5.54	6.22	6.61	6.90	7.45	8.13
Run VMG	3.11	3.99	4.80	5.50	6.03	6.44	7.01	7.53

Boat speed (knots) at wind angle / wind speed