Eratosthenes — ORC Rating

GPH

450.2

OSN

434.3

LOA

34.34 m

Displacement

101870 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8278

Medium

1.1965

High

1.4392

Triple Offshore

Low

1.0925

Medium

1.5372

High

1.8017

Boat Specifications

Dimensions

Length overall: 34.34 m
Beam: 7.43 m
Draft: 4.19 m
Displacement: 101870 kg
Crew weight: 3001 kg
Wetted surface: 173.93 m²

Sails

Mainsail: 280.2 m²
Genoa: 246.21 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 638.41 m²

Design

Type: Swan 112
Builder: Nautor
Designer: Frers
Year built: 1999
Stability index: 136.1

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.

6,47.1,6.360904,52,6.87,60,7.45,75,7.92,90,7.75,110,7.25,120,7.02,135,6.21,141.2,5.748469,150,5.17
8,45,7.820601,52,8.6,60,9.16,75,9.59,90,9.46,110,9.15,120,8.94,135,8.05,143,7.350036,150,6.77
10,43.2,8.779527,52,9.79,60,10.37,75,10.84,90,10.76,110,10.68,120,10.51,135,9.62,145.1,8.669126,150,8.21
12,43,9.461906,52,10.54,60,11.14,75,11.64,90,11.68,110,11.78,120,11.69,135,10.95,147.8,9.714094,150,9.5
14,42.3,9.802184,52,10.96,60,11.55,75,12.13,90,12.28,110,12.46,120,12.46,135,11.95,148.8,10.779033,150,10.65
16,42,10.051876,52,11.23,60,11.81,75,12.43,90,12.68,110,12.84,120,13.02,135,12.65,149.8,11.616676,150,11.59
20,41.7,10.33968,52,11.53,60,12.09,75,12.75,90,13.24,110,13.38,120,13.84,135,13.78,150,12.77,150.5,12.707448

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.87	7.45	7.92	7.75	7.25	7.02	6.21	5.17
8	8.6	9.16	9.59	9.46	9.15	8.94	8.05	6.77
10	9.79	10.37	10.84	10.76	10.68	10.51	9.62	8.21
12	10.54	11.14	11.64	11.68	11.78	11.69	10.95	9.5
14	10.96	11.55	12.13	12.28	12.46	12.46	11.95	10.65
16	11.23	11.81	12.43	12.68	12.84	13.02	12.65	11.59
20	11.53	12.09	12.75	13.24	13.38	13.84	13.78	12.77

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	47.1°	4.33	141.2°	4.48
8	45°	5.53	143°	5.87
10	43.2°	6.4	145.1°	7.11
12	43°	6.92	147.8°	8.22
14	42.3°	7.25	148.8°	9.22
16	42°	7.47	149.8°	10.04
20	41.7°	7.72	150.5°	11.06

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