MACHANGO: ORC Rating

GPH

618.2

OSN

600.1

LOA

11.99 m

Displacement

8232 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6465

Medium

0.886

High

1.0191

Triple Offshore

Low

0.8382

Medium

1.1013

High

1.2292

Boat Specifications

Dimensions

Length overall: 11.99 m
Beam: 3.88 m
Draft: 2.12 m
Displacement: 8232 kg
Crew weight: 500 kg
Wetted surface: 33.4 m²

Sails

Mainsail: 42.92 m²
Genoa: 42.73 m²
Spinnaker: 118.3 m²
Asymmetric spinnaker: 0 m²

Design

Type: DUFOUR 40 PERF
Builder: Dufour
Designer: Felci
Year built: 2009

Performance data

Polar CSV

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

6,43.9,4.635341,52,5.17,60,5.5,75,5.78,90,5.73,110,5.71,120,5.59,135,5.08,145,4.504658,150,4.26
8,42,5.463269,52,6.15,60,6.49,75,6.78,90,6.76,110,6.94,120,6.81,135,6.28,149,5.436512,150,5.38
10,41.6,6.164766,52,6.91,60,7.2,75,7.41,90,7.46,110,7.66,120,7.59,135,7.24,149,6.463149,150,6.39
12,41.2,6.565526,52,7.3,60,7.54,75,7.74,90,7.78,110,8.04,120,8.02,135,7.78,150,7.23,155,6.984382
14,40.9,6.720879,52,7.44,60,7.69,75,7.95,90,8.03,110,8.31,120,8.4,135,8.16,150,7.75,166,7.162765
16,40.7,6.766611,52,7.5,60,7.75,75,8.08,90,8.25,110,8.51,120,8.78,135,8.56,150,8.11,180,7.53
20,41.2,6.778175,52,7.5,60,7.78,75,8.18,90,8.61,110,8.87,120,9.26,135,9.47,150,8.89,180,8.25

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.17	5.5	5.78	5.73	5.71	5.59	5.08	4.26
8	6.15	6.49	6.78	6.76	6.94	6.81	6.28	5.38
10	6.91	7.2	7.41	7.46	7.66	7.59	7.24	6.39
12	7.3	7.54	7.74	7.78	8.04	8.02	7.78	7.23
14	7.44	7.69	7.95	8.03	8.31	8.4	8.16	7.75
16	7.5	7.75	8.08	8.25	8.51	8.78	8.56	8.11
20	7.5	7.78	8.18	8.61	8.87	9.26	9.47	8.89

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.9°	3.34	145°	3.69
8	42°	4.06	149°	4.66
10	41.6°	4.61	149°	5.54
12	41.2°	4.94	155°	6.33
14	40.9°	5.08	166°	6.95
16	40.7°	5.13	180°	7.53
20	41.2°	5.1	180°	8.25

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°	5.17	6.15	6.91	7.30	7.44	7.50	7.50
60°	5.50	6.49	7.20	7.54	7.69	7.75	7.78
75°	5.78	6.78	7.41	7.74	7.95	8.08	8.18
90°	5.73	6.76	7.46	7.78	8.03	8.25	8.61
110°	5.71	6.94	7.66	8.04	8.31	8.51	8.87
120°	5.59	6.81	7.59	8.02	8.40	8.78	9.26
135°	5.08	6.28	7.24	7.78	8.16	8.56	9.47
150°	4.26	5.38	6.39	7.23	7.75	8.11	8.89