BOREAS: ORC Rating

GPH

652

OSN

632.3

LOA

10.28 m

Displacement

5420 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6118

Medium

0.8441

High

0.9914

Triple Offshore

Low

0.7943

Medium

1.042

High

1.1803

Boat Specifications

Dimensions

Length overall: 10.28 m
Beam: 3.48 m
Draft: 1.94 m
Displacement: 5420 kg
Crew weight: 637 kg
Wetted surface: 25.13 m²

Sails

Mainsail: 32.88 m²
Genoa: 28.87 m²
Spinnaker: 74.29 m²
Asymmetric spinnaker: 80.02 m²

Design

Type: DUFOUR 34
Builder: DUFOUR YACHTS
Designer: FELCI
Year built: 2003

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,43.5,4.370157,52,4.89,60,5.19,75,5.42,90,5.47,110,5.51,120,5.34,135,4.82,146,4.221763,150,4.04
8,41.6,5.108331,52,5.79,60,6.11,75,6.37,90,6.53,110,6.63,120,6.46,135,5.89,150,5.09,150.5,5.055404
10,41.6,5.803706,52,6.47,60,6.72,75,6.9,90,7.11,110,7.19,120,7.1,135,6.76,150,6.02,150.5,5.997548
12,40.1,6.249008,52,6.87,60,7.04,75,7.19,90,7.41,110,7.55,120,7.48,135,7.23,150,6.8,157,6.474708
14,39,6.459533,52,7.08,60,7.24,75,7.41,90,7.56,110,7.9,120,7.84,135,7.57,150,7.22,174,6.616244
16,38.2,6.489731,52,7.18,60,7.37,75,7.6,90,7.71,110,8.24,120,8.25,135,7.95,150,7.54,180,7.07
20,39,6.588209,52,7.22,60,7.45,75,7.86,90,8.18,110,8.62,120,9,135,8.78,150,8.26,180,7.71

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.89	5.19	5.42	5.47	5.51	5.34	4.82	4.04
8	5.79	6.11	6.37	6.53	6.63	6.46	5.89	5.09
10	6.47	6.72	6.9	7.11	7.19	7.1	6.76	6.02
12	6.87	7.04	7.19	7.41	7.55	7.48	7.23	6.8
14	7.08	7.24	7.41	7.56	7.9	7.84	7.57	7.22
16	7.18	7.37	7.6	7.71	8.24	8.25	7.95	7.54
20	7.22	7.45	7.86	8.18	8.62	9	8.78	8.26

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	3.17	146°	3.5
8	41.6°	3.82	150.5°	4.4
10	41.6°	4.34	150.5°	5.22
12	40.1°	4.78	157°	5.96
14	39°	5.02	174°	6.58
16	38.2°	5.1	180°	7.07
20	39°	5.12	180°	7.71

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	4.89	5.79	6.47	6.87	7.08	7.18	7.22
60°	5.19	6.11	6.72	7.04	7.24	7.37	7.45
75°	5.42	6.37	6.90	7.19	7.41	7.60	7.86
90°	5.47	6.53	7.11	7.41	7.56	7.71	8.18
110°	5.51	6.63	7.19	7.55	7.90	8.24	8.62
120°	5.34	6.46	7.10	7.48	7.84	8.25	9.00
135°	4.82	5.89	6.76	7.23	7.57	7.95	8.78
150°	4.04	5.09	6.02	6.80	7.22	7.54	8.26