Nordanatt — ORC Rating

GPH

666.9

OSN

645.2

LOA

9.85 m

Displacement

3849 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6057

Medium

0.8313

High

0.9536

Triple Offshore

Low

0.7802

Medium

1.0195

High

1.1385

Boat Specifications

Dimensions

Length overall: 9.85 m
Beam: 3.21 m
Draft: 1.94 m
Displacement: 3849 kg
Crew weight: 450 kg
Wetted surface: 21.79 m²

Sails

Mainsail: 26.01 m²
Genoa: 28.01 m²
Spinnaker: 70.68 m²
Asymmetric spinnaker: 0 m²

Design

Type: First 31.7 LR
Builder: Beneteau
Designer: Finot
Year built: 1998
Stability index: 108.3

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.

6,43.5,4.480445,52,4.94,60,5.2,75,5.35,90,5.22,110,5.26,120,5.1,135,4.58,145.1,4.023645,150,3.81
8,40.8,5.218,52,5.83,60,6.06,75,6.22,90,6.18,110,6.34,120,6.21,135,5.68,149.6,4.915864,150,4.89
10,39.4,5.745836,52,6.39,60,6.58,75,6.72,90,6.77,110,6.95,120,6.88,135,6.55,150,5.86,150.9,5.802428
12,38.7,6.022318,52,6.68,60,6.86,75,7.02,90,7.06,110,7.34,120,7.31,135,7.06,150,6.61,157.7,6.290466
14,38.2,6.107982,52,6.81,60,7.01,75,7.24,90,7.32,110,7.66,120,7.7,135,7.47,150,7.07,169.4,6.51111
16,38.2,6.171607,52,6.87,60,7.08,75,7.38,90,7.56,110,7.9,120,8.06,135,7.88,150,7.45,177.2,6.888224
20,38.7,6.21452,52,6.91,60,7.13,75,7.53,90,7.9,110,8.23,120,8.65,135,8.77,150,8.25,177.2,7.619096

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.94	5.2	5.35	5.22	5.26	5.1	4.58	3.81
8	5.83	6.06	6.22	6.18	6.34	6.21	5.68	4.89
10	6.39	6.58	6.72	6.77	6.95	6.88	6.55	5.86
12	6.68	6.86	7.02	7.06	7.34	7.31	7.06	6.61
14	6.81	7.01	7.24	7.32	7.66	7.7	7.47	7.07
16	6.87	7.08	7.38	7.56	7.9	8.06	7.88	7.45
20	6.91	7.13	7.53	7.9	8.23	8.65	8.77	8.25

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	3.25	145.1°	3.3
8	40.8°	3.95	149.6°	4.24
10	39.4°	4.44	150.9°	5.07
12	38.7°	4.7	157.7°	5.82
14	38.2°	4.8	169.4°	6.4
16	38.2°	4.85	177.2°	6.88
20	38.7°	4.85	177.2°	7.61

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