Track — ORC Rating | RegattaPages

GPH

671.2

OSN

650

LOA

9.61 m

Displacement

3870 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5981

Medium

0.8231

High

0.944

Triple Offshore

Low

0.7728

Medium

1.0142

High

1.1328

Boat Specifications

Dimensions

Length overall: 9.61 m
Beam: 3.21 m
Draft: 1.94 m
Displacement: 3870 kg
Crew weight: 360 kg
Wetted surface: 21.61 m²

Sails

Mainsail: 26.5 m²
Genoa: 27.25 m²
Spinnaker: 61.76 m²
Asymmetric spinnaker: 0 m²

Design

Type: First 31.7 LR
Builder: Beneteau
Designer: Finot
Year built: 1998
Stability index: 109.5

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.

6,43.2,4.334892,52,4.84,60,5.12,75,5.33,90,5.26,110,5.22,120,5.05,135,4.54,146,4.004644,150,3.83
8,41.7,5.143053,52,5.75,60,6.03,75,6.25,90,6.23,110,6.34,120,6.18,135,5.63,150,4.89,150.2,4.886113
10,40.6,5.742348,52,6.4,60,6.6,75,6.76,90,6.84,110,6.95,120,6.87,135,6.51,150,5.82,152,5.719479
12,39.9,6.061276,52,6.69,60,6.87,75,7.04,90,7.09,110,7.33,120,7.27,135,7.01,150,6.58,157.4,6.260763
14,39.3,6.138218,52,6.79,60,6.99,75,7.24,90,7.35,110,7.69,120,7.68,135,7.4,150,7.02,169.1,6.507402
16,39,6.163578,52,6.84,60,7.05,75,7.38,90,7.61,110,7.94,120,8.11,135,7.84,150,7.39,177.2,6.8682
20,39.9,6.191626,52,6.82,60,7.07,75,7.48,90,7.99,110,8.32,120,8.75,135,8.84,150,8.25,178.1,7.58417

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.84	5.12	5.33	5.26	5.22	5.05	4.54	3.83
8	5.75	6.03	6.25	6.23	6.34	6.18	5.63	4.89
10	6.4	6.6	6.76	6.84	6.95	6.87	6.51	5.82
12	6.69	6.87	7.04	7.09	7.33	7.27	7.01	6.58
14	6.79	6.99	7.24	7.35	7.69	7.68	7.4	7.02
16	6.84	7.05	7.38	7.61	7.94	8.11	7.84	7.39
20	6.82	7.07	7.48	7.99	8.32	8.75	8.84	8.25

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.16	146°	3.32
8	41.7°	3.84	150.2°	4.24
10	40.6°	4.36	152°	5.05
12	39.9°	4.65	157.4°	5.78
14	39.3°	4.75	169.1°	6.39
16	39°	4.79	177.2°	6.86
20	39.9°	4.75	178.1°	7.58

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