BELLA I: ORC Rating

GPH

681.2

OSN

656.5

LOA

11.2 m

Displacement

7701 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5573

Medium

0.7949

High

0.9589

Triple Offshore

Low

0.7302

Medium

1.011

High

1.1844

Boat Specifications

Dimensions

Length overall: 11.2 m
Beam: 4.02 m
Draft: 1.91 m
Displacement: 7701 kg
Crew weight: 732 kg
Wetted surface: 33.37 m²

Sails

Mainsail: 36.54 m²
Genoa: 29.94 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 85.43 m²

Design

Type: Dufour 390
Builder: Dufour Yachts
Designer: Felci
Year built: 2019
Stability index: 116.3

Performance data

Polar CSV

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

6,46.8,4.002646,52,4.32,60,4.66,75,4.88,90,5.12,110,5.18,120,4.99,135,4.46,145.1,3.987066,150,3.78
8,45.4,4.913459,52,5.38,60,5.72,75,5.96,90,6.3,110,6.4,120,6.2,135,5.66,146.2,5.102382,150,4.89
10,44.1,5.570051,52,6.14,60,6.47,75,6.74,90,7.15,110,7.25,120,7.11,135,6.63,146.6,6.037028,150,5.83
12,43,6.070934,52,6.71,60,7.01,75,7.26,90,7.65,110,7.77,120,7.67,135,7.33,146.9,6.804193,150,6.58
14,41.8,6.438839,52,7.12,60,7.37,75,7.6,90,7.99,110,8.17,120,8.09,135,7.79,147.9,7.271681,150,7.11
16,41.2,6.671851,52,7.37,60,7.61,75,7.85,90,8.22,110,8.55,120,8.48,135,8.18,150,7.51,171.2,6.678618
20,41.4,6.798993,52,7.54,60,7.84,75,8.24,90,8.48,110,9.25,120,9.29,135,8.95,150,8.12,176.2,7.536569

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.32	4.66	4.88	5.12	5.18	4.99	4.46	3.78
8	5.38	5.72	5.96	6.3	6.4	6.2	5.66	4.89
10	6.14	6.47	6.74	7.15	7.25	7.11	6.63	5.83
12	6.71	7.01	7.26	7.65	7.77	7.67	7.33	6.58
14	7.12	7.37	7.6	7.99	8.17	8.09	7.79	7.11
16	7.37	7.61	7.85	8.22	8.55	8.48	8.18	7.51
20	7.54	7.84	8.24	8.48	9.25	9.29	8.95	8.12

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	46.8°	2.74	145.1°	3.27
8	45.4°	3.45	146.2°	4.24
10	44.1°	4	146.6°	5.04
12	43°	4.44	146.9°	5.7
14	41.8°	4.8	147.9°	6.16
16	41.2°	5.02	171.2°	6.6
20	41.4°	5.1	176.2°	7.52

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°	4.32	5.38	6.14	6.71	7.12	7.37	7.54
60°	4.66	5.72	6.47	7.01	7.37	7.61	7.84
75°	4.88	5.96	6.74	7.26	7.60	7.85	8.24
90°	5.12	6.30	7.15	7.65	7.99	8.22	8.48
110°	5.18	6.40	7.25	7.77	8.17	8.55	9.25
120°	4.99	6.20	7.11	7.67	8.09	8.48	9.29
135°	4.46	5.66	6.63	7.33	7.79	8.18	8.95
150°	3.78	4.89	5.83	6.58	7.11	7.51	8.12