J4F — ORC Rating | RegattaPages

GPH

574.1

OSN

556.4

LOA

11.121 m

Displacement

4325 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7155

Medium

0.9612

High

1.0881

Triple Offshore

Low

0.9193

Medium

1.1773

High

1.318

Boat Specifications

Dimensions

Length overall: 11.121 m
Beam: 3.3 m
Draft: 2.19 m
Displacement: 4325 kg
Crew weight: 689 kg
Wetted surface: 25.65 m²

Sails

Mainsail: 36.56 m²
Genoa: 30.85 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 129.72 m²

Design

Type: J-111 OD
Builder: J-COMPOSITE
Designer: JOHNSTONE Rodney
Year built: 2011
Stability index: 125.1

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.

6,42.6,5.053681,52,5.67,60,5.97,75,6.16,90,6.17,110,6.32,120,6.17,135,5.49,143.3,5.001399,150,4.64
8,40.6,6.04527,52,6.77,60,7,75,7.15,90,7.25,110,7.45,120,7.39,135,6.9,146.2,6.125265,150,5.88
10,38.4,6.596967,52,7.33,60,7.5,75,7.64,90,7.63,110,8.02,120,8.02,135,7.71,148.8,7.037937,150,6.95
12,37.2,6.804515,52,7.57,60,7.77,75,7.98,90,8.01,110,8.41,120,8.57,135,8.33,150,7.67,150.9,7.610679
14,37,6.92431,52,7.68,60,7.91,75,8.24,90,8.37,110,8.73,120,9.09,135,8.99,148.7,8.250836,150,8.13
16,36.6,6.975434,52,7.76,60,8.01,75,8.41,90,8.68,110,9.03,120,9.51,135,9.76,146.4,9.004453,150,8.66
20,37,7.049524,52,7.83,60,8.1,75,8.61,90,9.17,110,9.63,120,10.37,135,11.71,142.9,11.171238,150,10.28

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.67	5.97	6.16	6.17	6.32	6.17	5.49	4.64
8	6.77	7	7.15	7.25	7.45	7.39	6.9	5.88
10	7.33	7.5	7.64	7.63	8.02	8.02	7.71	6.95
12	7.57	7.77	7.98	8.01	8.41	8.57	8.33	7.67
14	7.68	7.91	8.24	8.37	8.73	9.09	8.99	8.13
16	7.76	8.01	8.41	8.68	9.03	9.51	9.76	8.66
20	7.83	8.1	8.61	9.17	9.63	10.37	11.71	10.28

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.72	143.3°	4.01
8	40.6°	4.59	146.2°	5.09
10	38.4°	5.17	148.8°	6.02
12	37.2°	5.42	150.9°	6.65
14	37°	5.53	148.7°	7.05
16	36.6°	5.6	146.4°	7.5
20	37°	5.63	142.9°	8.91

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