Fair Dinkum — ORC Rating

GPH

566.9

OSN

550.1

LOA

12.19 m

Displacement

6927 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7306

Medium

0.9728

High

1.0908

Triple Offshore

Low

0.9355

Medium

1.1908

High

1.3187

Boat Specifications

Dimensions

Length overall: 12.19 m
Beam: 3.64 m
Draft: 2.22 m
Displacement: 6927 kg
Crew weight: 753 kg
Wetted surface: 32.06 m²

Sails

Mainsail: 49.92 m²
Genoa: 41.38 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 146.45 m²

Design

Type: J-122 (DK)
Builder: J-boats
Designer: Johnstone
Year built: 2006
Stability index: 131.6

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.

6,43,5.264211,52,5.85,60,6.15,75,6.35,90,6.22,110,6.32,120,6.18,135,5.57,143.3,5.088705,150,4.71
8,40.8,6.195549,52,6.9,60,7.13,75,7.27,90,7.33,110,7.48,120,7.38,135,6.88,146.9,6.147648,150,5.94
10,39,6.768355,52,7.48,60,7.65,75,7.77,90,7.83,110,8.08,120,8.02,135,7.7,149.6,7.002788,150,6.97
12,37.6,6.992392,52,7.76,60,7.93,75,8.09,90,8.11,110,8.5,120,8.52,135,8.25,150,7.66,150.7,7.614074
14,37.2,7.118377,52,7.88,60,8.09,75,8.34,90,8.42,110,8.81,120,9,135,8.76,150,8.08,150.7,8.026885
16,37,7.19978,52,7.96,60,8.18,75,8.52,90,8.71,110,9.07,120,9.45,135,9.31,150,8.44,173,7.495873
20,37,7.262387,52,8.03,60,8.29,75,8.73,90,9.16,110,9.56,120,10.18,135,10.76,150,9.21,175.7,8.273288

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.85	6.15	6.35	6.22	6.32	6.18	5.57	4.71
8	6.9	7.13	7.27	7.33	7.48	7.38	6.88	5.94
10	7.48	7.65	7.77	7.83	8.08	8.02	7.7	6.97
12	7.76	7.93	8.09	8.11	8.5	8.52	8.25	7.66
14	7.88	8.09	8.34	8.42	8.81	9	8.76	8.08
16	7.96	8.18	8.52	8.71	9.07	9.45	9.31	8.44
20	8.03	8.29	8.73	9.16	9.56	10.18	10.76	9.21

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.85	143.3°	4.08
8	40.8°	4.69	146.9°	5.15
10	39°	5.26	149.6°	6.04
12	37.6°	5.54	150.7°	6.64
14	37.2°	5.67	150.7°	7
16	37°	5.75	173°	7.44
20	37°	5.8	175.7°	8.25

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