Just J — ORC Rating | RegattaPages

GPH

563.3

OSN

549.7

LOA

13.183 m

Displacement

8761 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8209

Medium

1.0875

High

1.2252

Triple Offshore

Low

1.063

Medium

1.3473

High

1.4838

Boat Specifications

Dimensions

Length overall: 13.183 m
Beam: 3.91 m
Draft: 2.06 m
Displacement: 8761 kg
Crew weight: 900 kg
Wetted surface: 37.11 m²

Sails

Mainsail: 54.67 m²
Genoa: 67.21 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 169.16 m²

Design

Type: J-133
Builder: TPI Boats
Designer: Jonhstone
Year built: 2004

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.

6,43.9,5.357011,52,5.94,60,6.3,75,6.61,90,6.56,110,6.32,120,6.18,135,5.57,143.8,5.056011,150,4.72
8,42.5,6.334116,52,7.07,60,7.4,75,7.62,90,7.6,110,7.62,120,7.51,135,6.93,146.9,6.111837,150,5.91
10,41.7,6.897585,52,7.62,60,7.86,75,8.05,90,8.1,110,8.22,120,8.18,135,7.85,148.2,7.130312,150,7
12,40.3,7.093516,52,7.81,60,8.03,75,8.29,90,8.4,110,8.56,120,8.63,135,8.35,150,7.8,150.8,7.744105
14,39.3,7.184946,52,7.91,60,8.12,75,8.42,90,8.66,110,8.82,120,9.09,135,8.83,150,8.19,152,8.075224
16,39.2,7.239228,52,7.97,60,8.18,75,8.52,90,8.89,110,9.09,120,9.45,135,9.41,150,8.53,175.3,7.605575
20,38.4,7.349813,52,8.09,60,8.29,75,8.62,90,9.15,110,9.55,120,10.06,135,10.71,150,9.39,177.6,8.407375

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.94	6.3	6.61	6.56	6.32	6.18	5.57	4.72
8	7.07	7.4	7.62	7.6	7.62	7.51	6.93	5.91
10	7.62	7.86	8.05	8.1	8.22	8.18	7.85	7
12	7.81	8.03	8.29	8.4	8.56	8.63	8.35	7.8
14	7.91	8.12	8.42	8.66	8.82	9.09	8.83	8.19
16	7.97	8.18	8.52	8.89	9.09	9.45	9.41	8.53
20	8.09	8.29	8.62	9.15	9.55	10.06	10.71	9.39

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.9°	3.86	143.8°	4.08
8	42.5°	4.67	146.9°	5.12
10	41.7°	5.15	148.2°	6.06
12	40.3°	5.41	150.8°	6.76
14	39.3°	5.56	152°	7.13
16	39.2°	5.61	175.3°	7.58
20	38.4°	5.76	177.6°	8.4

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