PROOF — ORC Rating | RegattaPages

GPH

572.1

OSN

556

LOA

12.244 m

Displacement

6817 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7082

Medium

0.9617

High

1.0904

Triple Offshore

Low

0.9173

Medium

1.1838

High

1.3228

Boat Specifications

Dimensions

Length overall: 12.244 m
Beam: 3.67 m
Draft: 2.16 m
Displacement: 6817 kg
Crew weight: 1010 kg
Wetted surface: 32.78 m²

Sails

Mainsail: 46.97 m²
Genoa: 51.52 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 165.15 m²

Design

Type: J-120
Designer: JOHNSTONE
Year built: 1997

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.

6,43.1,5.122149,52,5.72,60,6.08,75,6.38,90,6.29,110,6.24,120,6.11,135,5.41,143.5,4.92625,150,4.57
8,41.6,6.071158,52,6.83,60,7.13,75,7.33,90,7.32,110,7.47,120,7.38,135,6.84,147,5.926046,150,5.74
10,40.5,6.799,52,7.47,60,7.65,75,7.79,90,7.81,110,8.05,120,8,135,7.71,147,7.082638,150,6.86
12,38.6,7.037564,52,7.73,60,7.91,75,8.09,90,8.14,110,8.49,120,8.52,135,8.21,150,7.66,151,7.580437
14,37.5,7.134274,52,7.85,60,8.05,75,8.35,90,8.47,110,8.82,120,9.07,135,8.76,150,8.02,151.5,7.919737
16,36.8,7.180935,52,7.92,60,8.14,75,8.54,90,8.81,110,9.11,120,9.55,135,9.4,150,8.37,176,7.438119
20,36.6,7.274381,52,7.98,60,8.24,75,8.75,90,9.34,110,9.71,120,10.27,135,11,143,10.280034,150,9.48

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.72	6.08	6.38	6.29	6.24	6.11	5.41	4.57
8	6.83	7.13	7.33	7.32	7.47	7.38	6.84	5.74
10	7.47	7.65	7.79	7.81	8.05	8	7.71	6.86
12	7.73	7.91	8.09	8.14	8.49	8.52	8.21	7.66
14	7.85	8.05	8.35	8.47	8.82	9.07	8.76	8.02
16	7.92	8.14	8.54	8.81	9.11	9.55	9.4	8.37
20	7.98	8.24	8.75	9.34	9.71	10.27	11	9.48

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.1°	3.74	143.5°	3.96
8	41.6°	4.54	147°	4.97
10	40.5°	5.17	147°	5.94
12	38.6°	5.5	151°	6.63
14	37.5°	5.66	151.5°	6.96
16	36.8°	5.75	176°	7.42
20	36.6°	5.84	143°	8.21

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