Doris: ORC Rating

GPH

651.4

OSN

631.3

LOA

10.34 m

Displacement

5295 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6935

Medium

0.953

High

1.1027

Triple Offshore

Low

0.8953

Medium

1.1743

High

1.3187

Boat Specifications

Dimensions

Length overall: 10.34 m
Beam: 3.48 m
Draft: 1.95 m
Displacement: 5295 kg
Crew weight: 622 kg
Wetted surface: 25.3 m²

Sails

Mainsail: 32.7 m²
Genoa: 34.45 m²
Spinnaker: 77.68 m²
Asymmetric spinnaker: 0 m²

Design

Type: Dufour 34 Standard
Builder: Dufour Yachts
Designer: Umberto Felici
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.

6,43.8,4.50288,52,4.97,60,5.25,75,5.48,90,5.42,110,5.34,120,5.2,135,4.73,146.2,4.151702,150,3.98
8,41.5,5.233954,52,5.91,60,6.21,75,6.44,90,6.41,110,6.49,120,6.33,135,5.81,150,5.04,150.4,5.014405
10,41.4,5.945786,52,6.6,60,6.81,75,6.97,90,7.04,110,7.12,120,7.04,135,6.7,150,5.97,150.9,5.916874
12,40.2,6.310585,52,6.93,60,7.1,75,7.26,90,7.36,110,7.5,120,7.43,135,7.19,150,6.75,156.8,6.440836
14,39.3,6.422515,52,7.08,60,7.27,75,7.47,90,7.53,110,7.85,120,7.8,135,7.53,150,7.19,174.2,6.573652
16,39,6.472401,52,7.14,60,7.34,75,7.64,90,7.78,110,8.19,120,8.21,135,7.91,150,7.51,180,7.04
20,39.6,6.489181,52,7.16,60,7.38,75,7.8,90,8.2,110,8.58,120,8.96,135,8.75,150,8.23,180,7.68

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.97	5.25	5.48	5.42	5.34	5.2	4.73	3.98
8	5.91	6.21	6.44	6.41	6.49	6.33	5.81	5.04
10	6.6	6.81	6.97	7.04	7.12	7.04	6.7	5.97
12	6.93	7.1	7.26	7.36	7.5	7.43	7.19	6.75
14	7.08	7.27	7.47	7.53	7.85	7.8	7.53	7.19
16	7.14	7.34	7.64	7.78	8.19	8.21	7.91	7.51
20	7.16	7.38	7.8	8.2	8.58	8.96	8.75	8.23

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.8°	3.25	146.2°	3.45
8	41.5°	3.92	150.4°	4.36
10	41.4°	4.46	150.9°	5.17
12	40.2°	4.82	156.8°	5.92
14	39.3°	4.97	174.2°	6.54
16	39°	5.03	180°	7.04
20	39.6°	5	180°	7.68

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°	4.97	5.91	6.60	6.93	7.08	7.14	7.16
60°	5.25	6.21	6.81	7.10	7.27	7.34	7.38
75°	5.48	6.44	6.97	7.26	7.47	7.64	7.80
90°	5.42	6.41	7.04	7.36	7.53	7.78	8.20
110°	5.34	6.49	7.12	7.50	7.85	8.19	8.58
120°	5.20	6.33	7.04	7.43	7.80	8.21	8.96
135°	4.73	5.81	6.70	7.19	7.53	7.91	8.75
150°	3.98	5.04	5.97	6.75	7.19	7.51	8.23