OSO — ORC Rating | RegattaPages

GPH

698.4

OSN

681

LOA

8.99 m

Displacement

3712 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.583

Medium

0.782

High

0.8922

Triple Offshore

Low

0.7563

Medium

0.9671

High

1.074

Boat Specifications

Dimensions

Length overall: 8.99 m
Beam: 3.24 m
Draft: 1.75 m
Displacement: 3712 kg
Crew weight: 300 kg
Wetted surface: 19.47 m²

Sails

Mainsail: 27.54 m²
Genoa: 23.38 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 51.7 m²

Design

Type: FORTUNA 9
Builder: LA BORNA
Designer: J. VISIERS
Year built: 1989
Stability index: 123.2

Velocity Prediction

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into WX Navigator or compatible navigation software.

6,43.2,4.183994,52,4.66,60,4.92,75,5.2,90,5.44,110,5.28,120,5.01,135,4.48,146,4.004644,150,3.83
8,41.4,4.879277,52,5.5,60,5.77,75,6.09,90,6.28,110,6.19,120,6,135,5.5,147.5,4.92061,150,4.79
10,41.2,5.502283,52,6.07,60,6.25,75,6.47,90,6.66,110,6.62,120,6.52,135,6.24,147.5,5.762449,150,5.61
12,39.6,5.78835,52,6.34,60,6.49,75,6.68,90,6.93,110,6.94,120,6.86,135,6.63,149.8,6.17859,150,6.17
14,38.8,5.889614,52,6.47,60,6.64,75,6.82,90,7.17,110,7.3,120,7.23,135,6.97,150,6.5,174.8,5.874176
16,38.4,5.920682,52,6.53,60,6.72,75,6.99,90,7.34,110,7.64,120,7.61,135,7.34,150,6.76,177.5,6.316011
20,39.4,5.952893,52,6.55,60,6.76,75,7.17,90,7.54,110,8.14,120,8.31,135,8.08,150,7.31,178.4,6.87268

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.66	4.92	5.2	5.44	5.28	5.01	4.48	3.83
8	5.5	5.77	6.09	6.28	6.19	6	5.5	4.79
10	6.07	6.25	6.47	6.66	6.62	6.52	6.24	5.61
12	6.34	6.49	6.68	6.93	6.94	6.86	6.63	6.17
14	6.47	6.64	6.82	7.17	7.3	7.23	6.97	6.5
16	6.53	6.72	6.99	7.34	7.64	7.61	7.34	6.76
20	6.55	6.76	7.17	7.54	8.14	8.31	8.08	7.31

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.05	146°	3.32
8	41.4°	3.66	147.5°	4.15
10	41.2°	4.14	147.5°	4.86
12	39.6°	4.46	149.8°	5.34
14	38.8°	4.59	174.8°	5.85
16	38.4°	4.64	177.5°	6.31
20	39.4°	4.6	178.4°	6.87

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