AMETA: ORC Rating

GPH

634.9

OSN

614.8

LOA

11.9 m

Displacement

7935 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6986

Medium

0.9638

High

1.1405

Triple Offshore

Low

0.9055

Medium

1.2089

High

1.3846

Boat Specifications

Dimensions

Length overall: 11.9 m
Beam: 3.98 m
Draft: 2.03 m
Displacement: 7935 kg
Crew weight: 1100 kg
Wetted surface: 32 m²

Sails

Mainsail: 40.13 m²
Genoa: 44.33 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 85.61 m²

Design

Type: DUFOUR 405 GL
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.

6,44.1,4.497816,52,4.99,60,5.3,75,5.57,90,5.54,110,5.45,120,5.29,135,4.78,145.7,4.260994,150,4.06
8,42.4,5.308378,52,5.95,60,6.29,75,6.6,90,6.57,110,6.66,120,6.46,135,5.9,148.1,5.241635,150,5.14
10,42.4,6.039634,52,6.76,60,7.06,75,7.28,90,7.39,110,7.46,120,7.33,135,6.88,147.7,6.187432,150,6.04
12,41.8,6.626639,52,7.27,60,7.48,75,7.64,90,7.82,110,7.88,120,7.79,135,7.51,148.1,6.973142,150,6.83
14,40.3,6.883726,52,7.53,60,7.71,75,7.9,90,8.12,110,8.26,120,8.17,135,7.89,150,7.34,150.2,7.329169
16,39.7,6.992466,52,7.65,60,7.86,75,8.12,90,8.33,110,8.66,120,8.57,135,8.25,150,7.68,172.2,6.954343
20,39.9,7.064972,52,7.72,60,7.96,75,8.41,90,8.73,110,9.38,120,9.42,135,9.05,150,8.22,178.1,7.714241

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.99	5.3	5.57	5.54	5.45	5.29	4.78	4.06
8	5.95	6.29	6.6	6.57	6.66	6.46	5.9	5.14
10	6.76	7.06	7.28	7.39	7.46	7.33	6.88	6.04
12	7.27	7.48	7.64	7.82	7.88	7.79	7.51	6.83
14	7.53	7.71	7.9	8.12	8.26	8.17	7.89	7.34
16	7.65	7.86	8.12	8.33	8.66	8.57	8.25	7.68
20	7.72	7.96	8.41	8.73	9.38	9.42	9.05	8.22

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.1°	3.23	145.7°	3.52
8	42.4°	3.92	148.1°	4.45
10	42.4°	4.46	147.7°	5.23
12	41.8°	4.94	148.1°	5.92
14	40.3°	5.25	150.2°	6.36
16	39.7°	5.38	172.2°	6.89
20	39.9°	5.42	178.1°	7.71

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°	4.99	5.95	6.76	7.27	7.53	7.65	7.72
60°	5.30	6.29	7.06	7.48	7.71	7.86	7.96
75°	5.57	6.60	7.28	7.64	7.90	8.12	8.41
90°	5.54	6.57	7.39	7.82	8.12	8.33	8.73
110°	5.45	6.66	7.46	7.88	8.26	8.66	9.38
120°	5.29	6.46	7.33	7.79	8.17	8.57	9.42
135°	4.78	5.90	6.88	7.51	7.89	8.25	9.05
150°	4.06	5.14	6.04	6.83	7.34	7.68	8.22