PROOF — ORC Rating | RegattaPages

GPH

571.5

OSN

555.3

LOA

12.244 m

Displacement

6936 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.707

Medium

0.9629

High

1.093

Triple Offshore

Low

0.9165

Medium

1.1857

High

1.3284

Boat Specifications

Dimensions

Length overall: 12.244 m
Beam: 3.67 m
Draft: 2.16 m
Displacement: 6936 kg
Crew weight: 1010 kg
Wetted surface: 33.27 m²

Sails

Mainsail: 47.15 m²
Genoa: 52.16 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 164.99 m²

Design

Type: J-120
Designer: JOHNSTONE
Year built: 1997
Stability index: 124.7

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.

6,43.6,5.109284,52,5.66,60,6.01,75,6.29,90,6.47,110,6.28,120,6.06,135,5.41,144.2,4.907135,150,4.6
8,41.8,6.036412,52,6.77,60,7.08,75,7.3,90,7.52,110,7.43,120,7.35,135,6.83,147.8,5.920634,150,5.79
10,40.8,6.790005,52,7.45,60,7.62,75,7.78,90,8,110,8.02,120,7.98,135,7.71,147.3,7.11815,150,6.91
12,38.8,7.044441,52,7.72,60,7.89,75,8.05,90,8.34,110,8.45,120,8.49,135,8.22,150,7.69,150.9,7.633568
14,37.6,7.156474,52,7.84,60,8.04,75,8.3,90,8.62,110,8.9,120,9.03,135,8.78,150,8.06,151.4,7.95004
16,36.6,7.199644,52,7.92,60,8.13,75,8.5,90,8.84,110,9.38,120,9.5,135,9.41,150,8.4,172.1,7.450711
20,36.1,7.264942,52,8,60,8.24,75,8.73,90,9.27,110,10.18,120,10.4,135,11.01,143,10.317598,150,9.52

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.66	6.01	6.29	6.47	6.28	6.06	5.41	4.6
8	6.77	7.08	7.3	7.52	7.43	7.35	6.83	5.79
10	7.45	7.62	7.78	8	8.02	7.98	7.71	6.91
12	7.72	7.89	8.05	8.34	8.45	8.49	8.22	7.69
14	7.84	8.04	8.3	8.62	8.9	9.03	8.78	8.06
16	7.92	8.13	8.5	8.84	9.38	9.5	9.41	8.4
20	8	8.24	8.73	9.27	10.18	10.4	11.01	9.52

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.6°	3.7	144.2°	3.98
8	41.8°	4.5	147.8°	5.01
10	40.8°	5.14	147.3°	5.99
12	38.8°	5.49	150.9°	6.67
14	37.6°	5.67	151.4°	6.98
16	36.6°	5.78	172.1°	7.38
20	36.1°	5.87	143°	8.24

Loading polar chart…