CHALLENGER — ORC Rating

GPH

518.2

OSN

506.3

LOA

15.33 m

Displacement

8593 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8186

Medium

1.0543

High

1.185

Triple Offshore

Low

1.047

Medium

1.2871

High

1.4282

Boat Specifications

Dimensions

Length overall: 15.33 m
Beam: 4.52 m
Draft: 2.93 m
Displacement: 8593 kg
Crew weight: 1100 kg
Wetted surface: 39.58 m²

Sails

Mainsail: 86.75 m²
Genoa: 73.88 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 185.6 m²

Design

Type: Custom
Designer: FRERS
Year built: 1991
Stability index: 132.1

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.

6,41.7,6.254703,52,6.96,60,7.25,75,7.43,90,7.31,110,6.86,120,6.65,135,5.93,142.1,5.462029,150,4.97
8,38.4,6.99253,52,7.8,60,7.99,75,8.12,90,8.06,110,7.96,120,7.84,135,7.29,145.6,6.532435,150,6.23
10,36.6,7.336661,52,8.17,60,8.35,75,8.51,90,8.5,110,8.58,120,8.49,135,8.11,149.6,7.315826,150,7.28
12,35.7,7.536171,52,8.36,60,8.57,75,8.81,90,8.87,110,9.05,120,9.02,135,8.66,150,8.04,151.4,7.95004
14,35.1,7.651411,52,8.49,60,8.71,75,9.02,90,9.19,110,9.48,120,9.55,135,9.2,150,8.5,151.8,8.37396
16,35,7.764126,52,8.59,60,8.83,75,9.19,90,9.47,110,9.84,120,10.11,135,9.79,150,8.9,173.6,7.929417
20,35,7.886204,52,8.73,60,8.99,75,9.43,90,9.91,110,10.51,120,11.36,135,11.62,150,9.78,176.6,8.775446

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.96	7.25	7.43	7.31	6.86	6.65	5.93	4.97
8	7.8	7.99	8.12	8.06	7.96	7.84	7.29	6.23
10	8.17	8.35	8.51	8.5	8.58	8.49	8.11	7.28
12	8.36	8.57	8.81	8.87	9.05	9.02	8.66	8.04
14	8.49	8.71	9.02	9.19	9.48	9.55	9.2	8.5
16	8.59	8.83	9.19	9.47	9.84	10.11	9.79	8.9
20	8.73	8.99	9.43	9.91	10.51	11.36	11.62	9.78

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.7°	4.67	142.1°	4.31
8	38.4°	5.48	145.6°	5.39
10	36.6°	5.89	149.6°	6.31
12	35.7°	6.12	151.4°	6.98
14	35.1°	6.26	151.8°	7.38
16	35°	6.36	173.6°	7.88
20	35°	6.46	176.6°	8.76

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