Windshear — ORC Rating

GPH

622.8

OSN

602.2

LOA

10.57 m

Displacement

4346 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6522

Medium

0.8854

High

1.0077

Triple Offshore

Low

0.8378

Medium

1.0899

High

1.2233

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: 24.85 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
Stability index: 118.9

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.

6,42.9,4.614064,52,5.15,60,5.41,75,5.58,90,5.65,110,5.72,120,5.57,135,5.01,143.9,4.542136,150,4.24
8,40.8,5.495412,52,6.14,60,6.38,75,6.54,90,6.73,110,6.86,120,6.74,135,6.23,147.3,5.549543,150,5.4
10,39.4,6.108185,52,6.78,60,6.95,75,7.09,90,7.28,110,7.46,120,7.4,135,7.07,148.7,6.448526,150,6.36
12,37.8,6.403807,52,7.1,60,7.27,75,7.42,90,7.56,110,7.92,120,7.91,135,7.61,149.6,7.049164,150,7.02
14,37,6.523627,52,7.27,60,7.46,75,7.68,90,7.75,110,8.31,120,8.39,135,8.13,149.6,7.454954,150,7.43
16,36.9,6.627612,52,7.36,60,7.58,75,7.9,90,8.04,110,8.6,120,8.88,135,8.66,150,7.79,173,6.931668
20,37,6.711447,52,7.45,60,7.71,75,8.15,90,8.51,110,9.12,120,9.77,135,10.05,150,8.56,175.7,7.701679

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.15	5.41	5.58	5.65	5.72	5.57	5.01	4.24
8	6.14	6.38	6.54	6.73	6.86	6.74	6.23	5.4
10	6.78	6.95	7.09	7.28	7.46	7.4	7.07	6.36
12	7.1	7.27	7.42	7.56	7.92	7.91	7.61	7.02
14	7.27	7.46	7.68	7.75	8.31	8.39	8.13	7.43
16	7.36	7.58	7.9	8.04	8.6	8.88	8.66	7.79
20	7.45	7.71	8.15	8.51	9.12	9.77	10.05	8.56

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	3.38	143.9°	3.67
8	40.8°	4.16	147.3°	4.67
10	39.4°	4.72	148.7°	5.51
12	37.8°	5.06	149.6°	6.08
14	37°	5.21	149.6°	6.43
16	36.9°	5.3	173°	6.88
20	37°	5.36	175.7°	7.68

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