Aurora: ORC Rating

GPH

635.3

OSN

616.6

LOA

10.34 m

Displacement

5242 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6439

Medium

0.8709

High

0.995

Triple Offshore

Low

0.8286

Medium

1.0651

High

1.1839

Boat Specifications

Dimensions

Length overall: 10.34 m
Beam: 3.48 m
Draft: 1.93 m
Displacement: 5242 kg
Crew weight: 611 kg
Wetted surface: 24.96 m²

Sails

Mainsail: 35.83 m²
Genoa: 36.5 m²
Spinnaker: 79.96 m²
Asymmetric spinnaker: 0 m²

Design

Type: Dufour 34 Performa
Builder: Dufour Yachts
Designer: Umberto Felici
Year built: 2003
Stability index: 116.3

Performance data

Polar CSV

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

6,43,4.771973,52,5.33,60,5.61,75,5.79,90,5.67,110,5.48,120,5.31,135,4.79,144.8,4.270968,150,4.03
8,41.4,5.612502,52,6.24,60,6.47,75,6.62,90,6.57,110,6.58,120,6.44,135,5.92,149.6,5.159339,150,5.13
10,39.6,6.112809,52,6.76,60,6.93,75,7.06,90,7.06,110,7.18,120,7.1,135,6.75,150,6.08,152.3,5.963449
12,38.8,6.351545,52,7.02,60,7.18,75,7.34,90,7.38,110,7.57,120,7.52,135,7.25,150,6.81,158.6,6.444297
14,38.2,6.426106,52,7.13,60,7.31,75,7.55,90,7.64,110,7.91,120,7.9,135,7.64,150,7.26,170,6.701816
16,38.2,6.502456,52,7.19,60,7.39,75,7.69,90,7.87,110,8.2,120,8.27,135,8.03,150,7.63,177.2,7.098475
20,39,6.588209,52,7.24,60,7.46,75,7.85,90,8.21,110,8.56,120,8.93,135,8.86,150,8.37,179,7.791187

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.33	5.61	5.79	5.67	5.48	5.31	4.79	4.03
8	6.24	6.47	6.62	6.57	6.58	6.44	5.92	5.13
10	6.76	6.93	7.06	7.06	7.18	7.1	6.75	6.08
12	7.02	7.18	7.34	7.38	7.57	7.52	7.25	6.81
14	7.13	7.31	7.55	7.64	7.91	7.9	7.64	7.26
16	7.19	7.39	7.69	7.87	8.2	8.27	8.03	7.63
20	7.24	7.46	7.85	8.21	8.56	8.93	8.86	8.37

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.49	144.8°	3.49
8	41.4°	4.21	149.6°	4.45
10	39.6°	4.71	152.3°	5.28
12	38.8°	4.95	158.6°	6
14	38.2°	5.05	170°	6.6
16	38.2°	5.11	177.2°	7.09
20	39°	5.12	179°	7.79

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°	5.33	6.24	6.76	7.02	7.13	7.19	7.24
60°	5.61	6.47	6.93	7.18	7.31	7.39	7.46
75°	5.79	6.62	7.06	7.34	7.55	7.69	7.85
90°	5.67	6.57	7.06	7.38	7.64	7.87	8.21
110°	5.48	6.58	7.18	7.57	7.91	8.20	8.56
120°	5.31	6.44	7.10	7.52	7.90	8.27	8.93
135°	4.79	5.92	6.75	7.25	7.64	8.03	8.86
150°	4.03	5.13	6.08	6.81	7.26	7.63	8.37