ORBALLO UNO — ORC Rating

GPH

674.2

OSN

651.7

LOA

9.61 m

Displacement

3754 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5899

Medium

0.8191

High

0.9546

Triple Offshore

Low

0.7634

Medium

1.0114

High

1.1444

Boat Specifications

Dimensions

Length overall: 9.61 m
Beam: 3.21 m
Draft: 1.93 m
Displacement: 3754 kg
Crew weight: 525 kg
Wetted surface: 21.82 m²

Sails

Mainsail: 25.13 m²
Genoa: 27.27 m²
Spinnaker: 59.4 m²
Asymmetric spinnaker: 59.93 m²

Design

Type: FIRST 31.7
Builder: BENETEAU
Designer: FINOT
Year built: 1998
Stability index: 106.1

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.

6,43.6,4.266943,52,4.76,60,5.05,75,5.26,90,5.18,110,5.18,120,5,135,4.49,145.2,4.018758,150,3.81
8,42.3,5.097136,52,5.69,60,5.98,75,6.21,90,6.24,110,6.31,120,6.12,135,5.58,147.1,5.002264,150,4.85
10,41.2,5.714932,52,6.35,60,6.56,75,6.73,90,6.86,110,6.93,120,6.83,135,6.47,150,5.74,152,5.640199
12,39.6,6.086852,52,6.7,60,6.87,75,7.02,90,7.2,110,7.32,120,7.24,135,6.98,150,6.51,156.8,6.21236
14,38.7,6.21452,52,6.86,60,7.04,75,7.24,90,7.38,110,7.73,120,7.66,135,7.35,150,6.97,168.2,6.456441
16,38.2,6.247957,52,6.92,60,7.12,75,7.43,90,7.6,110,8.12,120,8.12,135,7.78,150,7.32,177.2,6.81814
20,38.8,6.274556,52,6.94,60,7.16,75,7.59,90,8.06,110,8.62,120,9.08,135,8.75,150,8.13,178.1,7.504126

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.76	5.05	5.26	5.18	5.18	5	4.49	3.81
8	5.69	5.98	6.21	6.24	6.31	6.12	5.58	4.85
10	6.35	6.56	6.73	6.86	6.93	6.83	6.47	5.74
12	6.7	6.87	7.02	7.2	7.32	7.24	6.98	6.51
14	6.86	7.04	7.24	7.38	7.73	7.66	7.35	6.97
16	6.92	7.12	7.43	7.6	8.12	8.12	7.78	7.32
20	6.94	7.16	7.59	8.06	8.62	9.08	8.75	8.13

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.6°	3.09	145.2°	3.3
8	42.3°	3.77	147.1°	4.2
10	41.2°	4.3	152°	4.98
12	39.6°	4.69	156.8°	5.71
14	38.7°	4.85	168.2°	6.32
16	38.2°	4.91	177.2°	6.81
20	38.8°	4.89	178.1°	7.5

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