Alfa — ORC Rating | RegattaPages

GPH

705.6

OSN

683

LOA

9.4 m

Displacement

3683 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5626

Medium

0.7826

High

0.9197

Triple Offshore

Low

0.7318

Medium

0.9649

High

1.0924

Boat Specifications

Dimensions

Length overall: 9.4 m
Beam: 3 m
Draft: 1.57 m
Displacement: 3683 kg
Crew weight: 528 kg
Wetted surface: 20.76 m²

Sails

Mainsail: 28.87 m²
Genoa: 16.73 m²
Spinnaker: 59.11 m²
Asymmetric spinnaker: 0 m²

Design

Type: OMEGA 30
Designer: Ron Holland
Year built: 1983
Stability index: 109.6

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.

6,44.2,4.031186,52,4.46,60,4.73,75,4.91,90,5.13,110,5.14,120,4.97,135,4.46,146,3.896084,150,3.73
8,41.8,4.694987,52,5.31,60,5.6,75,5.82,90,6.12,110,6.18,120,6.02,135,5.44,150,4.73,152,4.654863
10,41.8,5.325456,52,5.96,60,6.19,75,6.35,90,6.62,110,6.67,120,6.59,135,6.3,150,5.64,151.1,5.585606
12,40.8,5.786035,52,6.34,60,6.49,75,6.63,90,6.89,110,7.02,120,6.94,135,6.71,150,6.36,159.5,6.021317
14,39.4,5.965834,52,6.53,60,6.68,75,6.84,90,7.03,110,7.38,120,7.32,135,7.04,150,6.73,174.8,6.235664
16,38.8,6.017928,52,6.6,60,6.79,75,7.02,90,7.16,110,7.7,120,7.71,135,7.43,150,7.04,179,6.611007
20,38.8,6.056423,52,6.62,60,6.86,75,7.25,90,7.58,110,8.06,120,8.4,135,8.25,150,7.78,179,7.241103

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.46	4.73	4.91	5.13	5.14	4.97	4.46	3.73
8	5.31	5.6	5.82	6.12	6.18	6.02	5.44	4.73
10	5.96	6.19	6.35	6.62	6.67	6.59	6.3	5.64
12	6.34	6.49	6.63	6.89	7.02	6.94	6.71	6.36
14	6.53	6.68	6.84	7.03	7.38	7.32	7.04	6.73
16	6.6	6.79	7.02	7.16	7.7	7.71	7.43	7.04
20	6.62	6.86	7.25	7.58	8.06	8.4	8.25	7.78

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.2°	2.89	146°	3.23
8	41.8°	3.5	152°	4.11
10	41.8°	3.97	151.1°	4.89
12	40.8°	4.38	159.5°	5.64
14	39.4°	4.61	174.8°	6.21
16	38.8°	4.69	179°	6.61
20	38.8°	4.72	179°	7.24

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