Styrmor - NOR5701

Sailing performance analysis for a Albin Alpha from 1985, built by Albin and designed by Peter Norlin.

Compare with another boat

8.95

Length (LOA)

meters

2.826

Beam

meters

1.719

Draft

meters

3,745

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

2.12

2.23

6 kt

2.92

3.18

8 kt

3.53

4.01

10 kt

3.97

4.69

12 kt

4.27

5.22

14 kt

4.44

5.65

16 kt

4.52

6.01

20 kt

4.58

6.55

24 kt

4.54

6.98

⛵

Identity

NameStyrmor

Sail #NOR5701

CountryNOR

BuilderAlbin

DesignerPeter Norlin

Build Year1,985

Series Year1,985

📏

Dimensions

LOA8.95m

Beam2.83m

Draft1.72m

Disp.3,745kg

WS17.86m²

Crew429kg

⛵

Sail Areas

Genoa18.41m²

Main23.88m²

Spinnaker0m²

A-Spin49.47m²

Total42.3m²

🏆

ORC Rating

GPHN/A

CDL6.85

APH ToT0.92

APH ToD651.4

OSN0.85

Triple Offshore

Light

0.7213

Medium

0.9267

Heavy

1.0322

Triple Inshore

Light

0.5601

Medium

0.7543

Heavy

0.8659

📈

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	2.12	2.92	3.53	3.97	4.27	4.44	4.52	4.58	4.54
52°	3.29	4.43	5.24	5.75	6.04	6.20	6.30	6.38	6.39
60°	3.48	4.66	5.46	5.92	6.18	6.34	6.45	6.55	6.58
75°	3.59	4.80	5.61	6.06	6.31	6.49	6.64	6.82	6.91
90°	3.70	4.99	5.88	6.32	6.59	6.78	6.89	7.06	7.20
110°	3.70	5.00	5.91	6.36	6.65	6.91	7.17	7.65	7.93
120°	3.53	4.82	5.76	6.27	6.58	6.86	7.13	7.74	8.33
135°	3.10	4.32	5.30	5.98	6.37	6.66	6.93	7.53	8.26
150°	2.57	3.67	4.63	5.42	5.98	6.32	6.58	7.05	7.59
Run VMG	2.23	3.18	4.01	4.69	5.22	5.65	6.01	6.55	6.98

Boat speed (knots) at wind angle / wind speed