REWIND: ORC Rating

GPH

624.4

OSN

607

LOA

11.95 m

Displacement

7500 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7264

Medium

0.9832

High

1.1253

Triple Offshore

Low

0.9398

Medium

1.2229

High

1.3644

Boat Specifications

Dimensions

Length overall: 11.95 m
Beam: 3.98 m
Draft: 2 m
Displacement: 7500 kg
Crew weight: 750 kg
Wetted surface: 30.37 m²

Sails

Mainsail: 37.3 m²
Genoa: 48.56 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 133.94 m²

Design

Type: DUFOUR 41 CLASSIC
Builder: DUFOUR
Designer: J & J
Year built: 1997

Performance data

Polar CSV

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

6,43.4,4.624439,52,5.14,60,5.44,75,5.69,90,5.64,110,5.75,120,5.62,135,5.02,145.2,4.50588,150,4.28
8,41.9,5.414399,52,6.09,60,6.42,75,6.68,90,6.79,110,6.95,120,6.81,135,6.23,148,5.447804,150,5.34
10,42.1,6.145753,52,6.82,60,7.06,75,7.23,90,7.4,110,7.54,120,7.46,135,7.15,146.7,6.568499,150,6.34
12,40.8,6.565433,52,7.2,60,7.38,75,7.54,90,7.7,110,7.92,120,7.87,135,7.6,149.4,7.110144,150,7.06
14,39.8,6.716271,52,7.38,60,7.57,75,7.77,90,7.85,110,8.29,120,8.28,135,7.98,150,7.41,151.4,7.334994
16,39.8,6.820399,52,7.46,60,7.67,75,7.96,90,8.07,110,8.59,120,8.69,135,8.39,150,7.69,175.4,6.972459
20,40.3,6.870614,52,7.49,60,7.73,75,8.18,90,8.51,110,8.97,120,9.36,135,9.24,150,8.26,177.8,7.675658

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.14	5.44	5.69	5.64	5.75	5.62	5.02	4.28
8	6.09	6.42	6.68	6.79	6.95	6.81	6.23	5.34
10	6.82	7.06	7.23	7.4	7.54	7.46	7.15	6.34
12	7.2	7.38	7.54	7.7	7.92	7.87	7.6	7.06
14	7.38	7.57	7.77	7.85	8.29	8.28	7.98	7.41
16	7.46	7.67	7.96	8.07	8.59	8.69	8.39	7.69
20	7.49	7.73	8.18	8.51	8.97	9.36	9.24	8.26

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.4°	3.36	145.2°	3.7
8	41.9°	4.03	148°	4.62
10	42.1°	4.56	146.7°	5.49
12	40.8°	4.97	149.4°	6.12
14	39.8°	5.16	151.4°	6.44
16	39.8°	5.24	175.4°	6.95
20	40.3°	5.24	177.8°	7.67

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°	5.14	6.09	6.82	7.20	7.38	7.46	7.49
60°	5.44	6.42	7.06	7.38	7.57	7.67	7.73
75°	5.69	6.68	7.23	7.54	7.77	7.96	8.18
90°	5.64	6.79	7.40	7.70	7.85	8.07	8.51
110°	5.75	6.95	7.54	7.92	8.29	8.59	8.97
120°	5.62	6.81	7.46	7.87	8.28	8.69	9.36
135°	5.02	6.23	7.15	7.60	7.98	8.39	9.24
150°	4.28	5.34	6.34	7.06	7.41	7.69	8.26