J ans — ORC Rating | RegattaPages

GPH

627.1

OSN

606.9

LOA

10.57 m

Displacement

4174 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6486

Medium

0.8788

High

0.9968

Triple Offshore

Low

0.8337

Medium

1.0825

High

1.2082

Boat Specifications

Dimensions

Length overall: 10.57 m
Beam: 3.34 m
Draft: 2.02 m
Displacement: 4174 kg
Crew weight: 385 kg
Wetted surface: 24.59 m²

Sails

Mainsail: 33.6 m²
Genoa: 24.53 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 89.02 m²

Design

Type: J-105
Builder: T.P.I.
Designer: R 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.

6,43.1,4.588021,52,5.1,60,5.37,75,5.54,90,5.64,110,5.72,120,5.56,135,5,143.5,4.553049,150,4.23
8,40.9,5.464022,52,6.1,60,6.35,75,6.51,90,6.71,110,6.86,120,6.73,135,6.22,147.2,5.555776,150,5.39
10,39.3,6.04776,52,6.74,60,6.93,75,7.07,90,7.22,110,7.45,120,7.39,135,7.07,148.7,6.436823,150,6.35
12,38.1,6.32835,52,7.04,60,7.22,75,7.39,90,7.44,110,7.86,120,7.88,135,7.61,149.6,7.049164,150,7.02
14,37.5,6.453619,52,7.17,60,7.37,75,7.62,90,7.72,110,8.18,120,8.34,135,8.12,149.8,7.439763,150,7.43
16,37.3,6.524416,52,7.25,60,7.46,75,7.79,90,7.98,110,8.42,120,8.77,135,8.65,150,7.79,173.4,6.935966
20,37.1,6.607455,52,7.34,60,7.56,75,7.97,90,8.37,110,8.86,120,9.45,135,10.01,150,8.57,175.7,7.701679
24,38.1,6.620623,52,7.35,60,7.59,75,8.06,90,8.58,110,9.24,120,10.16,135,12.32,140.5,12.16913,150,10.85

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.1	5.37	5.54	5.64	5.72	5.56	5	4.23
8	6.1	6.35	6.51	6.71	6.86	6.73	6.22	5.39
10	6.74	6.93	7.07	7.22	7.45	7.39	7.07	6.35
12	7.04	7.22	7.39	7.44	7.86	7.88	7.61	7.02
14	7.17	7.37	7.62	7.72	8.18	8.34	8.12	7.43
16	7.25	7.46	7.79	7.98	8.42	8.77	8.65	7.79
20	7.34	7.56	7.97	8.37	8.86	9.45	10.01	8.57
24	7.35	7.59	8.06	8.58	9.24	10.16	12.32	10.85

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.1°	3.35	143.5°	3.66
8	40.9°	4.13	147.2°	4.67
10	39.3°	4.68	148.7°	5.5
12	38.1°	4.98	149.6°	6.08
14	37.5°	5.12	149.8°	6.43
16	37.3°	5.19	173.4°	6.89
20	37.1°	5.27	175.7°	7.68
24	38.1°	5.21	140.5°	9.39

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