J4F — ORC Rating | RegattaPages

GPH

580.3

OSN

563.1

LOA

11.085 m

Displacement

4409 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7888

Medium

1.0671

High

1.2107

Triple Offshore

Low

1.0175

Medium

1.3131

High

1.4742

Boat Specifications

Dimensions

Length overall: 11.085 m
Beam: 3.27 m
Draft: 2.22 m
Displacement: 4409 kg
Crew weight: 705 kg
Wetted surface: 26.05 m²

Sails

Mainsail: 36.67 m²
Genoa: 31.52 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 125.49 m²

Design

Type: J-111 OD
Builder: J-COMPOSITE
Designer: JOHNSTONE Rodney
Year built: 2011

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.

6,42.3,4.894332,52,5.49,60,5.79,75,6.02,90,6.14,110,6.25,120,6.11,135,5.46,143.6,4.957176,150,4.61
8,41,5.883058,52,6.64,60,6.92,75,7.1,90,7.31,110,7.45,120,7.35,135,6.83,146.2,6.053061,150,5.8
10,39.6,6.605986,52,7.29,60,7.47,75,7.6,90,7.66,110,8,120,7.95,135,7.62,148.8,6.956101,150,6.87
12,37.8,6.808791,52,7.54,60,7.73,75,7.95,90,7.96,110,8.42,120,8.57,135,8.17,150,7.57,151.2,7.485964
14,37.4,6.910749,52,7.64,60,7.87,75,8.24,90,8.36,110,8.76,120,9.13,135,8.84,150,7.967434
16,37.3,6.976977,52,7.69,60,7.94,75,8.43,90,8.76,110,9.09,120,9.56,135,9.63,150,8.39,176.1,7.387106
20,36.8,7.081026,52,7.82,60,8.06,75,8.59,90,9.31,110,9.8,120,10.46,135,11.58,142.1,10.949403,150,9.97

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.49	5.79	6.02	6.14	6.25	6.11	5.46	4.61
8	6.64	6.92	7.1	7.31	7.45	7.35	6.83	5.8
10	7.29	7.47	7.6	7.66	8	7.95	7.62	6.87
12	7.54	7.73	7.95	7.96	8.42	8.57	8.17	7.57
14	7.64	7.87	8.24	8.36	8.76	9.13	8.84	7.96
16	7.69	7.94	8.43	8.76	9.09	9.56	9.63	8.39
20	7.82	8.06	8.59	9.31	9.8	10.46	11.58	9.97

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	3.62	143.6°	3.99
8	41°	4.44	146.2°	5.03
10	39.6°	5.09	148.8°	5.95
12	37.8°	5.38	151.2°	6.56
14	37.4°	5.49	150°	6.9
16	37.3°	5.55	176.1°	7.37
20	36.8°	5.67	142.1°	8.64

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