Jetstream — ORC Rating

GPH

587.8

OSN

571.9

LOA

12.19 m

Displacement

7685 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7863

Medium

1.0484

High

1.1875

Triple Offshore

Low

1.0126

Medium

1.2937

High

1.43

Boat Specifications

Dimensions

Length overall: 12.19 m
Beam: 3.64 m
Draft: 2.25 m
Displacement: 7685 kg
Crew weight: 180 kg
Wetted surface: 33.35 m²

Sails

Mainsail: 48.72 m²
Genoa: 37.97 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 146.73 m²

Design

Type: J-122 (DK)
Builder: J Boats France
Designer: J. Johnstone
Year built: 2006

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.

6,42.5,4.92352,52,5.51,60,5.8,75,6.04,90,6.08,110,6.18,120,6.04,135,5.45,143.9,4.938181,150,4.61
8,40.7,5.803721,52,6.56,60,6.86,75,7.09,90,7.23,110,7.39,120,7.28,135,6.72,147.4,5.923183,150,5.76
10,40.3,6.477259,52,7.23,60,7.46,75,7.63,90,7.63,110,7.93,120,7.89,135,7.59,148.6,6.888869,150,6.79
12,39.5,6.777907,52,7.53,60,7.73,75,7.92,90,7.96,110,8.19,120,8.31,135,8.06,150,7.52,150.4,7.487105
14,38.8,6.890464,52,7.64,60,7.86,75,8.12,90,8.22,110,8.41,120,8.67,135,8.5,150,7.89,152,7.769431
16,38.5,6.951116,52,7.71,60,7.93,75,8.26,90,8.46,110,8.62,120,8.94,135,9,150,8.21,175.9,7.378884
20,37.8,7.099873,52,7.83,60,8.02,75,8.39,90,8.87,110,9.06,120,9.48,135,10.16,150,8.99,177.9,8.135464

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.51	5.8	6.04	6.08	6.18	6.04	5.45	4.61
8	6.56	6.86	7.09	7.23	7.39	7.28	6.72	5.76
10	7.23	7.46	7.63	7.63	7.93	7.89	7.59	6.79
12	7.53	7.73	7.92	7.96	8.19	8.31	8.06	7.52
14	7.64	7.86	8.12	8.22	8.41	8.67	8.5	7.89
16	7.71	7.93	8.26	8.46	8.62	8.94	9	8.21
20	7.83	8.02	8.39	8.87	9.06	9.48	10.16	8.99

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.5°	3.63	143.9°	3.99
8	40.7°	4.4	147.4°	4.99
10	40.3°	4.94	148.6°	5.88
12	39.5°	5.23	150.4°	6.51
14	38.8°	5.37	152°	6.86
16	38.5°	5.44	175.9°	7.36
20	37.8°	5.61	177.9°	8.13

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