AVISPA III — ORC Rating

GPH

663

OSN

642.2

LOA

9.49 m

Displacement

3712 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6052

Medium

0.8345

High

0.9692

Triple Offshore

Low

0.782

Medium

1.0249

High

1.1597

Boat Specifications

Dimensions

Length overall: 9.49 m
Beam: 3.22 m
Draft: 1.93 m
Displacement: 3712 kg
Crew weight: 576 kg
Wetted surface: 21.82 m²

Sails

Mainsail: 25.63 m²
Genoa: 29.46 m²
Spinnaker: 62.24 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 31.7
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.

6,42.8,4.402165,52,4.94,60,5.22,75,5.43,90,5.36,110,5.23,120,5.07,135,4.58,146,4.028768,150,3.86
8,41.2,5.18331,52,5.85,60,6.14,75,6.35,90,6.31,110,6.35,120,6.18,135,5.64,150,4.89593
10,40.5,5.825835,52,6.46,60,6.65,75,6.8,90,6.85,110,6.94,120,6.85,135,6.5,150,5.81,152,5.708153
12,38.6,6.154669,52,6.77,60,6.93,75,7.07,90,7.19,110,7.33,120,7.25,135,6.98,150,6.55,158,6.201575
14,37.9,6.285769,52,6.93,60,7.11,75,7.31,90,7.4,110,7.75,120,7.66,135,7.35,150,6.98,180,6.37
16,37.5,6.327572,52,6.99,60,7.2,75,7.53,90,7.67,110,8.15,120,8.12,135,7.77,150,7.32,180,6.85
20,38.1,6.353765,52,7.02,60,7.25,75,7.73,90,8.18,110,8.66,120,9.09,135,8.74,150,8.13,180,7.54

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.94	5.22	5.43	5.36	5.23	5.07	4.58	3.86
8	5.85	6.14	6.35	6.31	6.35	6.18	5.64	4.9
10	6.46	6.65	6.8	6.85	6.94	6.85	6.5	5.81
12	6.77	6.93	7.07	7.19	7.33	7.25	6.98	6.55
14	6.93	7.11	7.31	7.4	7.75	7.66	7.35	6.98
16	6.99	7.2	7.53	7.67	8.15	8.12	7.77	7.32
20	7.02	7.25	7.73	8.18	8.66	9.09	8.74	8.13

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.23	146°	3.34
8	41.2°	3.9	150°	4.24
10	40.5°	4.43	152°	5.04
12	38.6°	4.81	158°	5.75
14	37.9°	4.96	180°	6.37
16	37.5°	5.02	180°	6.85
20	38.1°	5	180°	7.54

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