Alfa — ORC Rating | RegattaPages

GPH

705.8

OSN

684.8

LOA

9.4 m

Displacement

3725 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5635

Medium

0.7799

High

0.9157

Triple Offshore

Low

0.7331

Medium

0.9632

High

1.0914

Boat Specifications

Dimensions

Length overall: 9.4 m
Beam: 3 m
Draft: 1.57 m
Displacement: 3725 kg
Crew weight: 532 kg
Wetted surface: 20.9 m²

Sails

Mainsail: 27.82 m²
Genoa: 16.65 m²
Spinnaker: 59.11 m²
Asymmetric spinnaker: 0 m²

Design

Type: OMEGA 30
Designer: Ron Holland
Year built: 1983

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.

6,44.2,4.045135,52,4.47,60,4.74,75,4.92,90,5.14,110,5.16,120,4.99,135,4.49,147,3.875181,150,3.75
8,42.8,4.756519,52,5.3,60,5.6,75,5.82,90,6.12,110,6.18,120,6.03,135,5.46,150,4.74,152,4.643537
10,42,5.315249,52,5.93,60,6.17,75,6.35,90,6.62,110,6.67,120,6.59,135,6.3,150,5.63,151,5.579568
12,40.9,5.755084,52,6.31,60,6.48,75,6.62,90,6.88,110,7.01,120,6.94,135,6.71,150,6.35,161,5.943828
14,39.6,5.94409,52,6.51,60,6.67,75,6.83,90,7.03,110,7.37,120,7.31,135,7.04,150,6.71,180,6.23
16,39,5.9963,52,6.59,60,6.78,75,7.01,90,7.14,110,7.7,120,7.71,135,7.41,150,7.02,180,6.62
20,39.2,6.026238,52,6.62,60,6.84,75,7.23,90,7.55,110,8.06,120,8.4,135,8.22,150,7.74,180,7.24

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.47	4.74	4.92	5.14	5.16	4.99	4.49	3.75
8	5.3	5.6	5.82	6.12	6.18	6.03	5.46	4.74
10	5.93	6.17	6.35	6.62	6.67	6.59	6.3	5.63
12	6.31	6.48	6.62	6.88	7.01	6.94	6.71	6.35
14	6.51	6.67	6.83	7.03	7.37	7.31	7.04	6.71
16	6.59	6.78	7.01	7.14	7.7	7.71	7.41	7.02
20	6.62	6.84	7.23	7.55	8.06	8.4	8.22	7.74

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.2°	2.9	147°	3.25
8	42.8°	3.49	152°	4.1
10	42°	3.95	151°	4.88
12	40.9°	4.35	161°	5.62
14	39.6°	4.58	180°	6.23
16	39°	4.66	180°	6.62
20	39.2°	4.67	180°	7.24

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