ALPHA CENTAURI — ORC Rating

GPH

539.5

OSN

525

LOA

19.68 m

Displacement

33116 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7391

Medium

0.9991

High

1.1743

Triple Offshore

Low

0.9581

Medium

1.2599

High

1.4264

Boat Specifications

Dimensions

Length overall: 19.68 m
Beam: 4.95 m
Draft: 2.94 m
Displacement: 33116 kg
Crew weight: 900 kg
Wetted surface: 71.79 m²

Sails

Mainsail: 77.86 m²
Genoa: 131.47 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 257.44 m²

Design

Type: SWAN 65
Builder: NAUTOR
Designer: S&S
Year built: 1972
Stability index: 140.7

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.

6,45,5.444722,52,5.94,60,6.31,75,6.62,90,6.6,110,6.5,120,6.38,135,5.78,143,5.296534,150,4.89
8,42.6,6.303516,52,7.02,60,7.42,75,7.77,90,7.78,110,7.92,120,7.73,135,7.03,146.6,6.288571,150,6.07
10,42.4,7.082351,52,7.95,60,8.34,75,8.61,90,8.75,110,8.88,120,8.75,135,8.19,146.6,7.330677,150,7.07
12,43.2,7.764394,52,8.51,60,8.81,75,9.02,90,9.21,110,9.33,120,9.27,135,8.93,148.7,8.145507,150,8.03
14,42.3,8.01751,52,8.77,60,9.06,75,9.28,90,9.5,110,9.62,120,9.64,135,9.36,150,8.76,153.8,8.514827
16,41.5,8.131322,52,8.92,60,9.2,75,9.5,90,9.73,110,9.8,120,9.97,135,9.71,150,9.2,159.5,8.743721
20,41.2,8.293297,52,9.05,60,9.34,75,9.71,90,10.08,110,10.1,120,10.4,135,10.44,150,9.85,173,9.097814

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.94	6.31	6.62	6.6	6.5	6.38	5.78	4.89
8	7.02	7.42	7.77	7.78	7.92	7.73	7.03	6.07
10	7.95	8.34	8.61	8.75	8.88	8.75	8.19	7.07
12	8.51	8.81	9.02	9.21	9.33	9.27	8.93	8.03
14	8.77	9.06	9.28	9.5	9.62	9.64	9.36	8.76
16	8.92	9.2	9.5	9.73	9.8	9.97	9.71	9.2
20	9.05	9.34	9.71	10.08	10.1	10.4	10.44	9.85

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45°	3.85	143°	4.23
8	42.6°	4.64	146.6°	5.25
10	42.4°	5.23	146.6°	6.12
12	43.2°	5.66	148.7°	6.96
14	42.3°	5.93	153.8°	7.64
16	41.5°	6.09	159.5°	8.19
20	41.2°	6.24	173°	9.03

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