TATTOO: ORC Rating

GPH

636.3

OSN

614.2

LOA

11.9 m

Displacement

8990 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6194

Medium

0.86

High

1.0261

Triple Offshore

Low

0.8005

Medium

1.073

High

1.2411

Boat Specifications

Dimensions

Length overall: 11.9 m
Beam: 3.98 m
Draft: 2.07 m
Displacement: 8990 kg
Crew weight: 500 kg
Wetted surface: 33.01 m²

Sails

Mainsail: 36.66 m²
Genoa: 44.35 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 97 m²

Design

Type: Dufour 405 GL
Builder: Dufour Yachts
Designer: Felci
Year built: 2009
Stability index: 145.5

Performance data

Polar CSV

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

6,44.7,4.516042,52,4.98,60,5.28,75,5.49,90,5.38,110,5.42,120,5.26,135,4.74,144.8,4.270968,150,4.03
8,42.6,5.36614,52,5.97,60,6.27,75,6.47,90,6.49,110,6.61,120,6.44,135,5.92,147.5,5.288173,150,5.15
10,41.7,6.040409,52,6.7,60,6.96,75,7.14,90,7.29,110,7.4,120,7.28,135,6.85,147.5,6.236724,150,6.07
12,40.5,6.522832,52,7.19,60,7.38,75,7.54,90,7.75,110,7.86,120,7.78,135,7.49,147.8,6.960586,150,6.8
14,38.8,6.826307,52,7.5,60,7.66,75,7.82,90,8.08,110,8.23,120,8.17,135,7.9,148.9,7.369196,150,7.28
16,37.8,7.023938,52,7.71,60,7.87,75,8.05,90,8.37,110,8.59,120,8.54,135,8.28,150,7.63,171.2,6.789928
20,37.2,7.206258,52,7.95,60,8.17,75,8.45,90,8.79,110,9.27,120,9.29,135,9.01,150,8.18,176.3,7.595833

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.98	5.28	5.49	5.38	5.42	5.26	4.74	4.03
8	5.97	6.27	6.47	6.49	6.61	6.44	5.92	5.15
10	6.7	6.96	7.14	7.29	7.4	7.28	6.85	6.07
12	7.19	7.38	7.54	7.75	7.86	7.78	7.49	6.8
14	7.5	7.66	7.82	8.08	8.23	8.17	7.9	7.28
16	7.71	7.87	8.05	8.37	8.59	8.54	8.28	7.63
20	7.95	8.17	8.45	8.79	9.27	9.29	9.01	8.18

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.7°	3.21	144.8°	3.49
8	42.6°	3.95	147.5°	4.46
10	41.7°	4.51	147.5°	5.26
12	40.5°	4.96	147.8°	5.89
14	38.8°	5.32	148.9°	6.31
16	37.8°	5.55	171.2°	6.71
20	37.2°	5.74	176.3°	7.58

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°	4.98	5.97	6.70	7.19	7.50	7.71	7.95
60°	5.28	6.27	6.96	7.38	7.66	7.87	8.17
75°	5.49	6.47	7.14	7.54	7.82	8.05	8.45
90°	5.38	6.49	7.29	7.75	8.08	8.37	8.79
110°	5.42	6.61	7.40	7.86	8.23	8.59	9.27
120°	5.26	6.44	7.28	7.78	8.17	8.54	9.29
135°	4.74	5.92	6.85	7.49	7.90	8.28	9.01
150°	4.03	5.15	6.07	6.80	7.28	7.63	8.18