Windshear — ORC Rating

GPH

624.1

OSN

603.3

LOA

10.57 m

Displacement

4346 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6501

Medium

0.884

High

1.0093

Triple Offshore

Low

0.8352

Medium

1.088

High

1.2229

Boat Specifications

Dimensions

Length overall: 10.57 m
Beam: 3.34 m
Draft: 2.03 m
Displacement: 4346 kg
Crew weight: 375 kg
Wetted surface: 25.06 m²

Sails

Mainsail: 32.94 m²
Genoa: 26.38 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 89.24 m²

Design

Type: J-105
Builder: J-Boats
Designer: Johnstone
Year built: 1992

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.

6,43.1,4.615412,52,5.13,60,5.39,75,5.57,90,5.63,110,5.71,120,5.56,135,5,143.5,4.553049,150,4.23
8,40.9,5.477252,52,6.12,60,6.36,75,6.52,90,6.71,110,6.85,120,6.72,135,6.22,147.3,5.537659,150,5.38
10,39.3,6.086528,52,6.76,60,6.94,75,7.07,90,7.27,110,7.45,120,7.38,135,7.06,148.7,6.425119,150,6.34
12,37.8,6.403807,52,7.09,60,7.26,75,7.41,90,7.55,110,7.9,120,7.89,135,7.59,149.6,7.03757,150,7
14,37,6.548669,52,7.27,60,7.45,75,7.67,90,7.73,110,8.29,120,8.37,135,8.1,149.8,7.428193,150,7.41
16,36.6,6.626662,52,7.36,60,7.58,75,7.88,90,8.02,110,8.58,120,8.85,135,8.63,150,7.76,173,6.911517
20,36.8,6.756323,52,7.47,60,7.71,75,8.13,90,8.49,110,9.07,120,9.7,135,9.96,150,8.52,175.7,7.671595
24,37.4,6.78487,52,7.5,60,7.77,75,8.27,90,8.8,110,9.56,120,10.53,135,12.59,139.4,12.195904,150,10.69

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.13	5.39	5.57	5.63	5.71	5.56	5	4.23
8	6.12	6.36	6.52	6.71	6.85	6.72	6.22	5.38
10	6.76	6.94	7.07	7.27	7.45	7.38	7.06	6.34
12	7.09	7.26	7.41	7.55	7.9	7.89	7.59	7
14	7.27	7.45	7.67	7.73	8.29	8.37	8.1	7.41
16	7.36	7.58	7.88	8.02	8.58	8.85	8.63	7.76
20	7.47	7.71	8.13	8.49	9.07	9.7	9.96	8.52
24	7.5	7.77	8.27	8.8	9.56	10.53	12.59	10.69

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.1°	3.37	143.5°	3.66
8	40.9°	4.14	147.3°	4.66
10	39.3°	4.71	148.7°	5.49
12	37.8°	5.06	149.6°	6.07
14	37°	5.23	149.8°	6.42
16	36.6°	5.32	173°	6.86
20	36.8°	5.41	175.7°	7.65
24	37.4°	5.39	139.4°	9.26

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