Brothership — ORC Rating

GPH

635.3

OSN

614.3

LOA

10.033 m

Displacement

3844 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.632

Medium

0.8718

High

1.0107

Triple Offshore

Low

0.8169

Medium

1.0698

High

1.21

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.

6,43.2,4.636688,52,5.15,60,5.42,75,5.59,90,5.55,110,5.55,120,5.37,135,4.79,143.3,4.290477,150,3.98
8,40.8,5.455782,52,6.12,60,6.36,75,6.51,90,6.6,110,6.67,120,6.5,135,5.94,148.7,5.161161,150,5.09
10,39.3,6.04776,52,6.71,60,6.89,75,7.03,90,7.15,110,7.28,120,7.18,135,6.79,150,6.07,151.6,5.979661
12,37.6,6.310823,52,7.01,60,7.19,75,7.36,90,7.45,110,7.74,120,7.68,135,7.32,150,6.83,157.4,6.509893
14,37.2,6.440436,52,7.16,60,7.36,75,7.62,90,7.7,110,8.15,120,8.16,135,7.8,150,7.32,170,6.722124
16,37,6.511105,52,7.24,60,7.47,75,7.83,90,8.01,110,8.48,120,8.62,135,8.31,150,7.77,177.2,7.138522
20,37.6,6.613743,52,7.32,60,7.58,75,8.04,90,8.48,110,8.96,120,9.52,135,9.49,150,8.74,177.2,7.979526

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.15	5.42	5.59	5.55	5.55	5.37	4.79	3.98
8	6.12	6.36	6.51	6.6	6.67	6.5	5.94	5.09
10	6.71	6.89	7.03	7.15	7.28	7.18	6.79	6.07
12	7.01	7.19	7.36	7.45	7.74	7.68	7.32	6.83
14	7.16	7.36	7.62	7.7	8.15	8.16	7.8	7.32
16	7.24	7.47	7.83	8.01	8.48	8.62	8.31	7.77
20	7.32	7.58	8.04	8.48	8.96	9.52	9.49	8.74

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.38	143.3°	3.44
8	40.8°	4.13	148.7°	4.41
10	39.3°	4.68	151.6°	5.26
12	37.6°	5	157.4°	6.01
14	37.2°	5.13	170°	6.62
16	37°	5.2	177.2°	7.13
20	37.6°	5.24	177.2°	7.97

Loading polar chart…