SOFIA — ORC Rating | RegattaPages

GPH

778.5

OSN

752.1

LOA

8.8 m

Displacement

3123 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5721

Medium

0.7936

High

0.9331

Triple Offshore

Low

0.7388

Medium

0.9875

High

1.1213

Boat Specifications

Dimensions

Length overall: 8.8 m
Beam: 2.7 m
Draft: 1.56 m
Displacement: 3123 kg
Crew weight: 360 kg
Wetted surface: 17.62 m²

Sails

Mainsail: 17.45 m²
Genoa: 19.06 m²
Spinnaker: 58.41 m²
Asymmetric spinnaker: 0 m²

Design

Type: OHLSON 29
Builder: ARTEKNO
Designer: OHLSON EINAR
Year built: 1979

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.

6,43.9,3.469567,52,3.84,60,4.07,75,4.26,90,4.5,110,4.64,120,4.51,135,4.11,147.9,3.624036,150,3.55
8,42.4,4.130243,52,4.61,60,4.87,75,5.11,90,5.52,110,5.67,120,5.55,135,5.09,150,4.48,151.5,4.415026
10,42.3,4.678008,52,5.26,60,5.55,75,5.76,90,6.11,110,6.23,120,6.17,135,5.91,150,5.32,151.5,5.245688
12,42.8,5.192647,52,5.74,60,5.95,75,6.11,90,6.33,110,6.56,120,6.52,135,6.32,150,5.98,159.6,5.63331
14,42.3,5.462182,52,5.98,60,6.16,75,6.33,90,6.43,110,6.85,120,6.86,135,6.64,150,6.34,180,5.86
16,42.1,5.552741,52,6.08,60,6.28,75,6.49,90,6.58,110,7.02,120,7.17,135,6.98,150,6.64,180,6.25
20,43,5.606043,52,6.1,60,6.33,75,6.7,90,6.94,110,7.28,120,7.55,135,7.61,150,7.25,180,6.83

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	3.84	4.07	4.26	4.5	4.64	4.51	4.11	3.55
8	4.61	4.87	5.11	5.52	5.67	5.55	5.09	4.48
10	5.26	5.55	5.76	6.11	6.23	6.17	5.91	5.32
12	5.74	5.95	6.11	6.33	6.56	6.52	6.32	5.98
14	5.98	6.16	6.33	6.43	6.85	6.86	6.64	6.34
16	6.08	6.28	6.49	6.58	7.02	7.17	6.98	6.64
20	6.1	6.33	6.7	6.94	7.28	7.55	7.61	7.25

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.9°	2.5	147.9°	3.07
8	42.4°	3.05	151.5°	3.88
10	42.3°	3.46	151.5°	4.61
12	42.8°	3.81	159.6°	5.28
14	42.3°	4.04	180°	5.86
16	42.1°	4.12	180°	6.25
20	43°	4.1	180°	6.83

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