BALANGUERA — ORC Rating

GPH

735.8

OSN

712.9

LOA

9.32 m

Displacement

4480 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5491

Medium

0.7485

High

0.8785

Triple Offshore

Low

0.706

Medium

0.9223

High

1.042

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: 20.24 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
Stability index: 124.4

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.

6,43.8,3.907115,52,4.32,60,4.57,75,4.74,90,4.75,110,4.83,120,4.69,135,4.3,146,3.859897,150,3.69
8,41.8,4.520602,52,5.09,60,5.37,75,5.59,90,5.73,110,5.83,120,5.69,135,5.24,150,4.61,152.3,4.517765
10,42,5.113404,52,5.7,60,5.93,75,6.1,90,6.29,110,6.36,120,6.3,135,6.03,150,5.43,153.3,5.272163
12,41.2,5.528864,52,6.06,60,6.23,75,6.36,90,6.58,110,6.68,120,6.63,135,6.43,150,6.08,159.2,5.755084
14,40.1,5.739152,52,6.26,60,6.41,75,6.55,90,6.77,110,6.98,120,6.94,135,6.73,150,6.44,173.6,5.967188
16,39.6,5.827285,52,6.37,60,6.53,75,6.72,90,6.88,110,7.26,120,7.25,135,7.03,150,6.72,179,6.330964
20,39.9,5.904856,52,6.43,60,6.63,75,6.97,90,7.17,110,7.61,120,7.77,135,7.62,150,7.29,179,6.861045

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.32	4.57	4.74	4.75	4.83	4.69	4.3	3.69
8	5.09	5.37	5.59	5.73	5.83	5.69	5.24	4.61
10	5.7	5.93	6.1	6.29	6.36	6.3	6.03	5.43
12	6.06	6.23	6.36	6.58	6.68	6.63	6.43	6.08
14	6.26	6.41	6.55	6.77	6.98	6.94	6.73	6.44
16	6.37	6.53	6.72	6.88	7.26	7.25	7.03	6.72
20	6.43	6.63	6.97	7.17	7.61	7.77	7.62	7.29

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.8°	2.82	146°	3.2
8	41.8°	3.37	152.3°	4
10	42°	3.8	153.3°	4.71
12	41.2°	4.16	159.2°	5.38
14	40.1°	4.39	173.6°	5.93
16	39.6°	4.49	179°	6.33
20	39.9°	4.53	179°	6.86

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