VITTORIA: ORC Rating

GPH

658.3

OSN

638.1

LOA

10.3 m

Displacement

5889 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6091

Medium

0.8364

High

0.9748

Triple Offshore

Low

0.7874

Medium

1.0325

High

1.162

Boat Specifications

Dimensions

Length overall: 10.3 m
Beam: 3.48 m
Draft: 1.98 m
Displacement: 5889 kg
Crew weight: 600 kg
Wetted surface: 26.37 m²

Sails

Mainsail: 33.08 m²
Genoa: 33.72 m²
Spinnaker: 77.91 m²
Asymmetric spinnaker: 0 m²

Design

Type: Dufour 34
Builder: Dufour Yachts
Designer: Felci/Roseo
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.

6,43.5,4.383943,52,4.9,60,5.21,75,5.45,90,5.39,110,5.33,120,5.17,135,4.7,146,4.173514,150,3.99
8,41.6,5.121703,52,5.8,60,6.12,75,6.39,90,6.36,110,6.46,120,6.29,135,5.77,150,5.034494
10,41.2,5.781385,52,6.49,60,6.73,75,6.91,90,6.98,110,7.09,120,7,135,6.65,150,5.93,152,5.832736
12,40.5,6.246663,52,6.86,60,7.04,75,7.2,90,7.29,110,7.44,120,7.38,135,7.15,150,6.7,156.5,6.400889
14,39.4,6.379948,52,7.03,60,7.21,75,7.4,90,7.46,110,7.76,120,7.72,135,7.48,150,7.14,174,6.535804
16,39,6.433798,52,7.1,60,7.29,75,7.56,90,7.68,110,8.06,120,8.09,135,7.83,150,7.46,180,7
20,39.4,6.470535,52,7.13,60,7.34,75,7.72,90,8.07,110,8.4,120,8.75,135,8.61,150,8.13,180,7.63

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.9	5.21	5.45	5.39	5.33	5.17	4.7	3.99
8	5.8	6.12	6.39	6.36	6.46	6.29	5.77	5.04
10	6.49	6.73	6.91	6.98	7.09	7	6.65	5.93
12	6.86	7.04	7.2	7.29	7.44	7.38	7.15	6.7
14	7.03	7.21	7.4	7.46	7.76	7.72	7.48	7.14
16	7.1	7.29	7.56	7.68	8.06	8.09	7.83	7.46
20	7.13	7.34	7.72	8.07	8.4	8.75	8.61	8.13

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	3.18	146°	3.46
8	41.6°	3.83	150°	4.36
10	41.2°	4.35	152°	5.15
12	40.5°	4.75	156.5°	5.87
14	39.4°	4.93	174°	6.5
16	39°	5	180°	7
20	39.4°	5	180°	7.63

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°	4.90	5.80	6.49	6.86	7.03	7.10	7.13
60°	5.21	6.12	6.73	7.04	7.21	7.29	7.34
75°	5.45	6.39	6.91	7.20	7.40	7.56	7.72
90°	5.39	6.36	6.98	7.29	7.46	7.68	8.07
110°	5.33	6.46	7.09	7.44	7.76	8.06	8.40
120°	5.17	6.29	7.00	7.38	7.72	8.09	8.75
135°	4.70	5.77	6.65	7.15	7.48	7.83	8.61
150°	3.99	5.04	5.93	6.70	7.14	7.46	8.13