VELELLA: ORC Rating

GPH

613

OSN

595.5

LOA

12.06 m

Displacement

7612 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6602

Medium

0.8929

High

1.025

Triple Offshore

Low

0.8536

Medium

1.1064

High

1.2351

Boat Specifications

Dimensions

Length overall: 12.06 m
Beam: 3.89 m
Draft: 2.06 m
Displacement: 7612 kg
Crew weight: 520 kg
Wetted surface: 31.39 m²

Sails

Mainsail: 45.55 m²
Genoa: 40.65 m²
Spinnaker: 92.29 m²
Asymmetric spinnaker: 91.91 m²

Design

Type: DUFOUR 40
Builder: DUFOUR
Designer: FELCI
Year built: 2002
Stability index: 119

Performance data

Polar CSV

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

6,43.8,4.932386,52,5.47,60,5.78,75,6,90,5.9,110,5.68,120,5.49,135,4.91,143.9,4.443125,150,4.15
8,41.8,5.781541,52,6.45,60,6.73,75,6.92,90,6.87,110,6.86,120,6.68,135,6.12,147.5,5.430456,150,5.29
10,40.6,6.335021,52,7.05,60,7.28,75,7.45,90,7.45,110,7.57,120,7.46,135,7.04,150,6.24,152.3,6.110277
12,40,6.605361,52,7.34,60,7.57,75,7.77,90,7.83,110,8.01,120,7.95,135,7.64,150,7.05,156.4,6.733142
14,39.6,6.709813,52,7.47,60,7.7,75,7.98,90,8.09,110,8.38,120,8.35,135,8.08,150,7.6,164.6,7.073989
16,39.6,6.774705,52,7.54,60,7.78,75,8.11,90,8.32,110,8.7,120,8.75,135,8.49,150,8.01,175.4,7.403849
20,40,6.82728,52,7.59,60,7.84,75,8.26,90,8.65,110,9.11,120,9.5,135,9.34,150,8.79,179,8.181246

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.47	5.78	6	5.9	5.68	5.49	4.91	4.15
8	6.45	6.73	6.92	6.87	6.86	6.68	6.12	5.29
10	7.05	7.28	7.45	7.45	7.57	7.46	7.04	6.24
12	7.34	7.57	7.77	7.83	8.01	7.95	7.64	7.05
14	7.47	7.7	7.98	8.09	8.38	8.35	8.08	7.6
16	7.54	7.78	8.11	8.32	8.7	8.75	8.49	8.01
20	7.59	7.84	8.26	8.65	9.11	9.5	9.34	8.79

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.8°	3.56	143.9°	3.59
8	41.8°	4.31	147.5°	4.58
10	40.6°	4.81	152.3°	5.41
12	40°	5.06	156.4°	6.17
14	39.6°	5.17	164.6°	6.82
16	39.6°	5.22	175.4°	7.38
20	40°	5.23	179°	8.18

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°	5.47	6.45	7.05	7.34	7.47	7.54	7.59
60°	5.78	6.73	7.28	7.57	7.70	7.78	7.84
75°	6.00	6.92	7.45	7.77	7.98	8.11	8.26
90°	5.90	6.87	7.45	7.83	8.09	8.32	8.65
110°	5.68	6.86	7.57	8.01	8.38	8.70	9.11
120°	5.49	6.68	7.46	7.95	8.35	8.75	9.50
135°	4.91	6.12	7.04	7.64	8.08	8.49	9.34
150°	4.15	5.29	6.24	7.05	7.60	8.01	8.79