BALANGUERA — ORC Rating

GPH

735.5

OSN

712.3

LOA

9.32 m

Displacement

4480 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5563

Medium

0.754

High

0.8719

Triple Offshore

Low

0.7121

Medium

0.9214

High

1.0288

Boat Specifications

Dimensions

Length overall: 9.32 m
Beam: 3.29 m
Draft: 1.77 m
Displacement: 4480 kg
Crew weight: 450 kg
Wetted surface: 20.33 m²

Sails

Mainsail: 19.84 m²
Genoa: 29.31 m²
Spinnaker: 63.52 m²
Asymmetric spinnaker: 61.84 m²

Design

Type: DUFOUR 31
Builder: DUFOUR
Designer: DUFOUR
Year built: 1977

Velocity Prediction

Polar CSV

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

6,43.5,3.997936,52,4.42,60,4.65,75,4.78,90,4.75,110,4.83,120,4.68,135,4.27,145.2,3.848265,150,3.65
8,41.7,4.674285,52,5.2,60,5.42,75,5.57,90,5.67,110,5.76,120,5.63,135,5.22,150,4.6,151.2,4.541789
10,40.5,5.155141,52,5.72,60,5.89,75,6.04,90,6.19,110,6.29,120,6.22,135,5.94,150,5.39,154.2,5.220373
12,39.4,5.461132,52,6.02,60,6.17,75,6.31,90,6.47,110,6.59,120,6.56,135,6.37,150,6,161,5.626542
14,38.9,5.65376,52,6.19,60,6.34,75,6.49,90,6.64,110,6.84,120,6.83,135,6.66,150,6.38,174.3,5.879069
16,38.7,5.727609,52,6.29,60,6.44,75,6.63,90,6.74,110,7.07,120,7.09,135,6.92,150,6.65,178.1,6.253438
20,39,5.77755,52,6.34,60,6.52,75,6.8,90,6.97,110,7.47,120,7.64,135,7.49,150,7.15,179,6.771031
24,40.6,5.755518,52,6.3,60,6.51,75,6.86,90,7.18,110,7.71,120,8.13,135,8.13,150,7.73,179,7.251104

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.42	4.65	4.78	4.75	4.83	4.68	4.27	3.65
8	5.2	5.42	5.57	5.67	5.76	5.63	5.22	4.6
10	5.72	5.89	6.04	6.19	6.29	6.22	5.94	5.39
12	6.02	6.17	6.31	6.47	6.59	6.56	6.37	6
14	6.19	6.34	6.49	6.64	6.84	6.83	6.66	6.38
16	6.29	6.44	6.63	6.74	7.07	7.09	6.92	6.65
20	6.34	6.52	6.8	6.97	7.47	7.64	7.49	7.15
24	6.3	6.51	6.86	7.18	7.71	8.13	8.13	7.73

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	2.9	145.2°	3.16
8	41.7°	3.49	151.2°	3.98
10	40.5°	3.92	154.2°	4.7
12	39.4°	4.22	161°	5.32
14	38.9°	4.4	174.3°	5.85
16	38.7°	4.47	178.1°	6.25
20	39°	4.49	179°	6.77
24	40.6°	4.37	179°	7.25

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