Brothership — ORC Rating

GPH

637.4

OSN

618

LOA

10.033 m

Displacement

3844 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7085

Medium

0.9756

High

1.1321

Triple Offshore

Low

0.9178

Medium

1.198

High

1.3555

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: 23.35 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

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.

6,42.6,4.52386,52,5.09,60,5.38,75,5.6,90,5.58,110,5.59,120,5.41,135,4.86,144.6,4.306073,150,4.05
8,40.9,5.344951,52,6.03,60,6.32,75,6.53,90,6.64,110,6.7,120,6.54,135,5.97,149.3,5.152048,150,5.12
10,40.2,6.02255,52,6.67,60,6.86,75,7,90,7.16,110,7.24,120,7.15,135,6.81,150,6.07,150.6,6.037554
12,38.2,6.324307,52,6.98,60,7.14,75,7.3,90,7.43,110,7.68,120,7.59,135,7.28,150,6.83,157.9,6.486578
14,37.4,6.432409,52,7.12,60,7.31,75,7.55,90,7.63,110,8.13,120,8.09,135,7.7,150,7.26,180,6.64
16,37.2,6.490654,52,7.18,60,7.4,75,7.77,90,7.95,110,8.46,120,8.61,135,8.21,150,7.65,180,7.11
20,37.2,6.540872,52,7.21,60,7.45,75,7.96,90,8.49,110,8.97,120,9.5,135,9.43,150,8.62,180,7.89

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.09	5.38	5.6	5.58	5.59	5.41	4.86	4.05
8	6.03	6.32	6.53	6.64	6.7	6.54	5.97	5.12
10	6.67	6.86	7	7.16	7.24	7.15	6.81	6.07
12	6.98	7.14	7.3	7.43	7.68	7.59	7.28	6.83
14	7.12	7.31	7.55	7.63	8.13	8.09	7.7	7.26
16	7.18	7.4	7.77	7.95	8.46	8.61	8.21	7.65
20	7.21	7.45	7.96	8.49	8.97	9.5	9.43	8.62

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.33	144.6°	3.51
8	40.9°	4.04	149.3°	4.43
10	40.2°	4.6	150.6°	5.26
12	38.2°	4.97	157.9°	6.01
14	37.4°	5.11	180°	6.64
16	37.2°	5.17	180°	7.11
20	37.2°	5.21	180°	7.89

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