AVA — ORC Rating | RegattaPages

GPH

665.1

OSN

644.3

LOA

9.85 m

Displacement

3764 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6034

Medium

0.8315

High

0.9583

Triple Offshore

Low

0.7807

Medium

1.0226

High

1.147

Boat Specifications

Dimensions

Length overall: 9.85 m
Beam: 3.21 m
Draft: 1.93 m
Displacement: 3764 kg
Crew weight: 550 kg
Wetted surface: 21.92 m²

Sails

Mainsail: 25.9 m²
Genoa: 33.06 m²
Spinnaker: 61.63 m²
Asymmetric spinnaker: 0 m²

Design

Type: First 31.7 LR
Designer: Groupe Finot
Year built: 1998
Stability index: 108.9

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.

6,43.2,4.444636,52,4.97,60,5.27,75,5.48,90,5.4,110,5.17,120,5,135,4.5,146,3.968457,150,3.8
8,41.7,5.263594,52,5.9,60,6.18,75,6.39,90,6.37,110,6.31,120,6.13,135,5.58,150,4.85,150.2,4.840018
10,40.6,5.887224,52,6.51,60,6.69,75,6.83,90,6.86,110,6.93,120,6.84,135,6.47,150,5.77,152,5.674176
12,39.4,6.15995,52,6.78,60,6.94,75,7.1,90,7.17,110,7.32,120,7.24,135,6.98,150,6.54,157,6.235709
14,38.7,6.25296,52,6.88,60,7.06,75,7.31,90,7.43,110,7.71,120,7.65,135,7.35,150,6.99,169.4,6.460242
16,38.2,6.273407,52,6.92,60,7.12,75,7.46,90,7.7,110,8.08,120,8.1,135,7.78,150,7.34,177.2,6.838164
20,38.7,6.2914,52,6.94,60,7.16,75,7.58,90,8.09,110,8.52,120,8.97,135,8.76,150,8.17,178.1,7.524137

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.97	5.27	5.48	5.4	5.17	5	4.5	3.8
8	5.9	6.18	6.39	6.37	6.31	6.13	5.58	4.85
10	6.51	6.69	6.83	6.86	6.93	6.84	6.47	5.77
12	6.78	6.94	7.1	7.17	7.32	7.24	6.98	6.54
14	6.88	7.06	7.31	7.43	7.71	7.65	7.35	6.99
16	6.92	7.12	7.46	7.7	8.08	8.1	7.78	7.34
20	6.94	7.16	7.58	8.09	8.52	8.97	8.76	8.17

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.24	146°	3.29
8	41.7°	3.93	150.2°	4.2
10	40.6°	4.47	152°	5.01
12	39.4°	4.76	157°	5.74
14	38.7°	4.88	169.4°	6.35
16	38.2°	4.93	177.2°	6.83
20	38.7°	4.91	178.1°	7.52

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