VIENTO: ORC Rating

GPH

716.6

OSN

697.1

LOA

9.03 m

Displacement

3100 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6249

Medium

0.8493

High

0.9892

Triple Offshore

Low

0.8137

Medium

1.0663

High

1.2076

Boat Specifications

Dimensions

Length overall: 9.03 m
Beam: 3.04 m
Draft: 1.53 m
Displacement: 3100 kg
Crew weight: 479 kg
Wetted surface: 18.89 m²

Sails

Mainsail: 21.33 m²
Genoa: 19.2 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 55.11 m²

Design

Type: DUFOUR 30 CLASSIC
Builder: DUFOUR
Designer: J & J DESIGN
Year built: 1996

Performance data

Polar CSV

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

6,45.5,3.966277,52,4.35,60,4.65,75,4.88,90,5.05,110,5.11,120,4.95,135,4.48,146.5,3.98136,150,3.83
8,44,4.67095,52,5.19,60,5.53,75,5.78,90,6.07,110,6.16,120,6,135,5.5,147.5,4.92061,150,4.8
10,42.8,5.192647,52,5.83,60,6.12,75,6.33,90,6.62,110,6.69,120,6.6,135,6.3,147.2,5.781814,150,5.62
12,42.4,5.674006,52,6.24,60,6.45,75,6.62,90,6.94,110,7.06,120,6.98,135,6.73,148.8,6.278027,150,6.2
14,40.9,5.913845,52,6.48,60,6.67,75,6.85,90,7.15,110,7.45,120,7.38,135,7.09,150,6.56,174.1,5.840941
16,41.2,6.047195,52,6.59,60,6.8,75,7.06,90,7.28,110,7.82,120,7.78,135,7.48,150,6.83,176.7,6.320481
20,42.7,6.068732,52,6.59,60,6.85,75,7.33,90,7.65,110,8.29,120,8.62,135,8.28,150,7.41,177.9,6.924651

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.35	4.65	4.88	5.05	5.11	4.95	4.48	3.83
8	5.19	5.53	5.78	6.07	6.16	6	5.5	4.8
10	5.83	6.12	6.33	6.62	6.69	6.6	6.3	5.62
12	6.24	6.45	6.62	6.94	7.06	6.98	6.73	6.2
14	6.48	6.67	6.85	7.15	7.45	7.38	7.09	6.56
16	6.59	6.8	7.06	7.28	7.82	7.78	7.48	6.83
20	6.59	6.85	7.33	7.65	8.29	8.62	8.28	7.41

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45.5°	2.78	146.5°	3.32
8	44°	3.36	147.5°	4.15
10	42.8°	3.81	147.2°	4.86
12	42.4°	4.19	148.8°	5.37
14	40.9°	4.47	174.1°	5.81
16	41.2°	4.55	176.7°	6.31
20	42.7°	4.46	177.9°	6.92

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°	4.35	5.19	5.83	6.24	6.48	6.59	6.59
60°	4.65	5.53	6.12	6.45	6.67	6.80	6.85
75°	4.88	5.78	6.33	6.62	6.85	7.06	7.33
90°	5.05	6.07	6.62	6.94	7.15	7.28	7.65
110°	5.11	6.16	6.69	7.06	7.45	7.82	8.29
120°	4.95	6.00	6.60	6.98	7.38	7.78	8.62
135°	4.48	5.50	6.30	6.73	7.09	7.48	8.28
150°	3.83	4.80	5.62	6.20	6.56	6.83	7.41