BLU ONE: ORC Rating

GPH

672.7

OSN

654.1

LOA

11.65 m

Displacement

6500 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5884

Medium

0.8011

High

0.9087

Triple Offshore

Low

0.77

Medium

1.0133

High

1.1286

Boat Specifications

Dimensions

Length overall: 11.65 m
Beam: 3.85 m
Draft: 1.46 m
Displacement: 6500 kg
Crew weight: 400 kg
Wetted surface: 26.67 m²

Sails

Mainsail: 31.38 m²
Genoa: 44.63 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 85.46 m²

Design

Type: Dufour 38 Classic
Builder: Dufour
Designer: Chabaud/Poncin
Year built: 1997
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.

6,47.7,4.427852,52,4.75,60,5.17,75,5.46,90,5.4,110,5.3,120,5.14,135,4.62,144.8,4.148591,150,3.92
8,46,5.268777,52,5.73,60,6.11,75,6.38,90,6.37,110,6.45,120,6.3,135,5.8,146.9,5.192674,150,5.03
10,45,5.854844,52,6.38,60,6.7,75,6.95,90,6.99,110,7.16,120,7.08,135,6.7,147.1,6.121818,150,5.94
12,44.2,6.193241,52,6.75,60,7.04,75,7.29,90,7.39,110,7.59,120,7.54,135,7.28,147.8,6.783321,150,6.62
14,43.8,6.317888,52,6.93,60,7.23,75,7.51,90,7.63,110,7.93,120,7.91,135,7.68,149.2,7.124896,150,7.07
16,43.8,6.387163,52,7,60,7.32,75,7.67,90,7.84,110,8.23,120,8.26,135,8.04,150,7.4,172.1,6.673334
20,44.8,6.412328,52,7,60,7.36,75,7.84,90,8.19,110,8.74,120,8.94,135,8.76,150,7.95,174.8,7.440623

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.75	5.17	5.46	5.4	5.3	5.14	4.62	3.92
8	5.73	6.11	6.38	6.37	6.45	6.3	5.8	5.03
10	6.38	6.7	6.95	6.99	7.16	7.08	6.7	5.94
12	6.75	7.04	7.29	7.39	7.59	7.54	7.28	6.62
14	6.93	7.23	7.51	7.63	7.93	7.91	7.68	7.07
16	7	7.32	7.67	7.84	8.23	8.26	8.04	7.4
20	7	7.36	7.84	8.19	8.74	8.94	8.76	7.95

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	47.7°	2.98	144.8°	3.39
8	46°	3.66	146.9°	4.35
10	45°	4.14	147.1°	5.14
12	44.2°	4.44	147.8°	5.74
14	43.8°	4.56	149.2°	6.12
16	43.8°	4.61	172.1°	6.61
20	44.8°	4.55	174.8°	7.41

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°	4.75	5.73	6.38	6.75	6.93	7.00	7.00
60°	5.17	6.11	6.70	7.04	7.23	7.32	7.36
75°	5.46	6.38	6.95	7.29	7.51	7.67	7.84
90°	5.40	6.37	6.99	7.39	7.63	7.84	8.19
110°	5.30	6.45	7.16	7.59	7.93	8.23	8.74
120°	5.14	6.30	7.08	7.54	7.91	8.26	8.94
135°	4.62	5.80	6.70	7.28	7.68	8.04	8.76
150°	3.92	5.03	5.94	6.62	7.07	7.40	7.95