Arethusa — ORC Rating

GPH

612.4

OSN

594.3

LOA

10.757 m

Displacement

5208 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6773

Medium

0.9006

High

1.0114

Triple Offshore

Low

0.8663

Medium

1.1024

High

1.2165

Boat Specifications

Dimensions

Length overall: 10.757 m
Beam: 3.52 m
Draft: 2.14 m
Displacement: 5208 kg
Crew weight: 626 kg
Wetted surface: 26.37 m²

Sails

Mainsail: 37.76 m²
Genoa: 31 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 107.12 m²

Design

Type: J-109
Builder: J-Boats France
Designer: Johnstone
Year built: 2001
Stability index: 116.8

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.

6,42.4,4.79379,52,5.37,60,5.64,75,5.81,90,5.8,110,5.88,120,5.73,135,5.18,144.2,4.697534,150,4.4
8,40.6,5.676495,52,6.34,60,6.56,75,6.71,90,6.83,110,6.96,120,6.85,135,6.39,147.9,5.678049,150,5.56
10,38.8,6.223231,52,6.9,60,7.06,75,7.19,90,7.3,110,7.51,120,7.46,135,7.16,149.2,6.554439,150,6.5
12,37.6,6.462283,52,7.16,60,7.32,75,7.48,90,7.51,110,7.88,120,7.9,135,7.65,150,7.11,150.1,7.105806
14,37,6.561191,52,7.27,60,7.46,75,7.69,90,7.78,110,8.18,120,8.31,135,8.11,150,7.48,151.1,7.401785
16,37,6.636319,52,7.34,60,7.54,75,7.84,90,8.01,110,8.4,120,8.69,135,8.57,150,7.79,173.9,7.019746
20,37.2,6.70408,52,7.41,60,7.62,75,8,90,8.37,110,8.8,120,9.31,135,9.72,150,8.46,176.6,7.713577

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.37	5.64	5.81	5.8	5.88	5.73	5.18	4.4
8	6.34	6.56	6.71	6.83	6.96	6.85	6.39	5.56
10	6.9	7.06	7.19	7.3	7.51	7.46	7.16	6.5
12	7.16	7.32	7.48	7.51	7.88	7.9	7.65	7.11
14	7.27	7.46	7.69	7.78	8.18	8.31	8.11	7.48
16	7.34	7.54	7.84	8.01	8.4	8.69	8.57	7.79
20	7.41	7.62	8	8.37	8.8	9.31	9.72	8.46

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.54	144.2°	3.81
8	40.6°	4.31	147.9°	4.81
10	38.8°	4.85	149.2°	5.63
12	37.6°	5.12	150.1°	6.16
14	37°	5.24	151.1°	6.48
16	37°	5.3	173.9°	6.98
20	37.2°	5.34	176.6°	7.7

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