Dina: ORC Rating

GPH

637.9

OSN

619

LOA

10.34 m

Displacement

5231 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6399

Medium

0.8671

High

0.9922

Triple Offshore

Low

0.8241

Medium

1.0615

High

1.1811

Boat Specifications

Dimensions

Length overall: 10.34 m
Beam: 3.48 m
Draft: 1.93 m
Displacement: 5231 kg
Crew weight: 610 kg
Wetted surface: 24.95 m²

Sails

Mainsail: 35.71 m²
Genoa: 36.57 m²
Spinnaker: 74.81 m²
Asymmetric spinnaker: 0 m²

Design

Type: Dufour 34 Performa
Builder: Dufour Yachts
Designer: Umberto Felici
Year built: 2003
Stability index: 116.2

Performance data

Polar CSV

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

6,43,4.771973,52,5.33,60,5.61,75,5.79,90,5.67,110,5.42,120,5.25,135,4.72,144.8,4.20978,150,3.97
8,41.2,5.595317,52,6.24,60,6.47,75,6.61,90,6.57,110,6.53,120,6.38,135,5.85,149.6,5.101368,150,5.08
10,39.6,6.112809,52,6.76,60,6.93,75,7.06,90,7.06,110,7.15,120,7.06,135,6.69,150,6.02,152.3,5.895683
12,38.8,6.351545,52,7.02,60,7.18,75,7.34,90,7.38,110,7.55,120,7.48,135,7.2,150,6.75,158.6,6.390594
14,38.2,6.426106,52,7.12,60,7.31,75,7.54,90,7.64,110,7.89,120,7.86,135,7.59,150,7.22,170,6.651044
16,38.1,6.48084,52,7.19,60,7.39,75,7.69,90,7.87,110,8.19,120,8.22,135,7.97,150,7.58,177.2,7.058427
20,39,6.588209,52,7.23,60,7.45,75,7.84,90,8.21,110,8.58,120,8.9,135,8.78,150,8.3,179,7.751181

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.33	5.61	5.79	5.67	5.42	5.25	4.72	3.97
8	6.24	6.47	6.61	6.57	6.53	6.38	5.85	5.08
10	6.76	6.93	7.06	7.06	7.15	7.06	6.69	6.02
12	7.02	7.18	7.34	7.38	7.55	7.48	7.2	6.75
14	7.12	7.31	7.54	7.64	7.89	7.86	7.59	7.22
16	7.19	7.39	7.69	7.87	8.19	8.22	7.97	7.58
20	7.23	7.45	7.84	8.21	8.58	8.9	8.78	8.3

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.49	144.8°	3.44
8	41.2°	4.21	149.6°	4.4
10	39.6°	4.71	152.3°	5.22
12	38.8°	4.95	158.6°	5.95
14	38.2°	5.05	170°	6.55
16	38.1°	5.1	177.2°	7.05
20	39°	5.12	179°	7.75

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	7.12	7.19	7.23
60°	5.61	6.47	6.93	7.18	7.31	7.39	7.45
75°	5.79	6.61	7.06	7.34	7.54	7.69	7.84
90°	5.67	6.57	7.06	7.38	7.64	7.87	8.21
110°	5.42	6.53	7.15	7.55	7.89	8.19	8.58
120°	5.25	6.38	7.06	7.48	7.86	8.22	8.90
135°	4.72	5.85	6.69	7.20	7.59	7.97	8.78
150°	3.97	5.08	6.02	6.75	7.22	7.58	8.30