Brothership — ORC Rating

GPH

639

OSN

618.3

LOA

10.033 m

Displacement

3844 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6249

Medium

0.8665

High

1.0067

Triple Offshore

Low

0.8106

Medium

1.0642

High

1.205

Boat Specifications

Dimensions

Length overall: 10.033 m
Beam: 3.35 m
Draft: 1.99 m
Displacement: 3844 kg
Crew weight: 550 kg
Wetted surface: 23.08 m²

Sails

Mainsail: 33.33 m²
Genoa: 22.8 m²
Spinnaker: 69.88 m²
Asymmetric spinnaker: 0 m²

Design

Type: Dufour 334
Builder: Dufour
Designer: Jacques Fauroux
Year built: 1997
Stability index: 106.4

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.

6,43,4.498507,52,5.04,60,5.34,75,5.55,90,5.56,110,5.57,120,5.38,135,4.83,144.2,4.290661,150,4.02
8,41.8,5.379113,52,6.01,60,6.3,75,6.51,90,6.64,110,6.7,120,6.54,135,5.96,149.3,5.152048,150,5.11
10,40.6,6.032099,52,6.67,60,6.85,75,7,90,7.16,110,7.26,120,7.16,135,6.81,150,6.08,151.1,6.019661
12,38.5,6.337782,52,6.98,60,7.15,75,7.3,90,7.43,110,7.7,120,7.61,135,7.28,150,6.84,157.7,6.517441
14,37.6,6.43704,52,7.12,60,7.32,75,7.57,90,7.64,110,8.16,120,8.12,135,7.73,150,7.28,171.2,6.719095
16,37.5,6.504038,52,7.18,60,7.4,75,7.79,90,7.98,110,8.48,120,8.66,135,8.26,150,7.7,178.1,7.113911
20,37.2,6.565981,52,7.23,60,7.46,75,7.99,90,8.53,110,8.99,120,9.54,135,9.53,150,8.71,177.2,7.919455

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.04	5.34	5.55	5.56	5.57	5.38	4.83	4.02
8	6.01	6.3	6.51	6.64	6.7	6.54	5.96	5.11
10	6.67	6.85	7	7.16	7.26	7.16	6.81	6.08
12	6.98	7.15	7.3	7.43	7.7	7.61	7.28	6.84
14	7.12	7.32	7.57	7.64	8.16	8.12	7.73	7.28
16	7.18	7.4	7.79	7.98	8.48	8.66	8.26	7.7
20	7.23	7.46	7.99	8.53	8.99	9.54	9.53	8.71

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.29	144.2°	3.48
8	41.8°	4.01	149.3°	4.43
10	40.6°	4.58	151.1°	5.27
12	38.5°	4.96	157.7°	6.03
14	37.6°	5.1	171.2°	6.64
16	37.5°	5.16	178.1°	7.11
20	37.2°	5.23	177.2°	7.91

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