Ami — ORC Rating | RegattaPages

GPH

666.5

OSN

646.1

LOA

9.85 m

Displacement

3870 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6017

Medium

0.8277

High

0.9574

Triple Offshore

Low

0.7781

Medium

1.0201

High

1.1487

Boat Specifications

Dimensions

Length overall: 9.85 m
Beam: 3.21 m
Draft: 1.94 m
Displacement: 3870 kg
Crew weight: 586 kg
Wetted surface: 22.22 m²

Sails

Mainsail: 26.54 m²
Genoa: 27.95 m²
Spinnaker: 61.97 m²
Asymmetric spinnaker: 60.47 m²

Design

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

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.

6,42.8,4.361278,52,4.89,60,5.17,75,5.38,90,5.31,110,5.27,120,5.08,135,4.56,146,4.028768,150,3.86
8,41.2,5.130148,52,5.8,60,6.09,75,6.31,90,6.32,110,6.38,120,6.18,135,5.62,147.5,5.015465,150,4.88
10,40.5,5.760081,52,6.42,60,6.62,75,6.78,90,6.9,110,6.96,120,6.86,135,6.5,150,5.78,151.5,5.700845
12,39,6.09924,52,6.74,60,6.9,75,7.05,90,7.22,110,7.33,120,7.25,135,6.98,150,6.54,157,6.235709
14,38.4,6.214164,52,6.87,60,7.06,75,7.27,90,7.43,110,7.73,120,7.65,135,7.35,150,6.98,180,6.37
16,38.2,6.260682,52,6.93,60,7.13,75,7.45,90,7.63,110,8.13,120,8.1,135,7.76,150,7.32,180,6.85
20,39,6.266519,52,6.94,60,7.16,75,7.59,90,8.07,110,8.66,120,9.05,135,8.7,150,8.11,180,7.53

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.89	5.17	5.38	5.31	5.27	5.08	4.56	3.86
8	5.8	6.09	6.31	6.32	6.38	6.18	5.62	4.88
10	6.42	6.62	6.78	6.9	6.96	6.86	6.5	5.78
12	6.74	6.9	7.05	7.22	7.33	7.25	6.98	6.54
14	6.87	7.06	7.27	7.43	7.73	7.65	7.35	6.98
16	6.93	7.13	7.45	7.63	8.13	8.1	7.76	7.32
20	6.94	7.16	7.59	8.07	8.66	9.05	8.7	8.11

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.2	146°	3.34
8	41.2°	3.86	147.5°	4.23
10	40.5°	4.38	151.5°	5.01
12	39°	4.74	157°	5.74
14	38.4°	4.87	180°	6.37
16	38.2°	4.92	180°	6.85
20	39°	4.87	180°	7.53

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