TARAHUMARA — ORC Rating

GPH

573.4

OSN

559.5

LOA

12.2 m

Displacement

7345 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7079

Medium

0.9529

High

1.0746

Triple Offshore

Low

0.9224

Medium

1.1781

High

1.3086

Boat Specifications

Dimensions

Length overall: 12.2 m
Beam: 3.64 m
Draft: 2.23 m
Displacement: 7345 kg
Crew weight: 736 kg
Wetted surface: 32.66 m²

Sails

Mainsail: 50.69 m²
Genoa: 42.14 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 154.83 m²

Design

Type: J 122
Builder: JBOAT
Designer: JOHNSTONE
Year built: 2006
Stability index: 129

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.

6,43.2,4.993356,52,5.58,60,5.91,75,6.46,90,6.72,110,6.52,120,6.2,135,5.54,144.2,5.018101,150,4.7
8,41.8,5.955926,52,6.67,60,6.98,75,7.45,90,7.65,110,7.56,120,7.39,135,6.89,146.9,6.0999,150,5.9
10,40.8,6.671114,52,7.36,60,7.56,75,7.81,90,8.07,110,8.06,120,8,135,7.72,148.7,7.057098,150,6.97
12,39.3,6.939417,52,7.64,60,7.83,75,8.01,90,8.34,110,8.5,120,8.49,135,8.2,150,7.67,150.9,7.622124
14,38.4,7.03081,52,7.76,60,7.97,75,8.24,90,8.56,110,8.96,120,8.99,135,8.73,150,8.04,151.6,7.934987
16,38.4,7.120131,52,7.82,60,8.04,75,8.42,90,8.75,110,9.38,120,9.35,135,9.33,150,8.38,173,7.485798
20,37.8,7.251742,52,7.92,60,8.13,75,8.59,90,9.14,110,9.98,120,10.37,135,10.82,150,9.19,175.7,8.213119

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.58	5.91	6.46	6.72	6.52	6.2	5.54	4.7
8	6.67	6.98	7.45	7.65	7.56	7.39	6.89	5.9
10	7.36	7.56	7.81	8.07	8.06	8	7.72	6.97
12	7.64	7.83	8.01	8.34	8.5	8.49	8.2	7.67
14	7.76	7.97	8.24	8.56	8.96	8.99	8.73	8.04
16	7.82	8.04	8.42	8.75	9.38	9.35	9.33	8.38
20	7.92	8.13	8.59	9.14	9.98	10.37	10.82	9.19

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.64	144.2°	4.07
8	41.8°	4.44	146.9°	5.11
10	40.8°	5.05	148.7°	6.03
12	39.3°	5.37	150.9°	6.66
14	38.4°	5.51	151.6°	6.98
16	38.4°	5.58	173°	7.43
20	37.8°	5.73	175.7°	8.19

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