Windfall — ORC Rating

GPH

782.4

OSN

755.2

LOA

10.36 m

Displacement

7500 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5642

Medium

0.7871

High

0.9364

Triple Offshore

Low

0.7291

Medium

0.9832

High

1.1331

Boat Specifications

Dimensions

Length overall: 10.36 m
Beam: 3.28 m
Draft: 1.69 m
Displacement: 7500 kg
Crew weight: 510 kg
Wetted surface: 25.62 m²

Sails

Mainsail: 25.54 m²
Genoa: 35.43 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 0 m²

Design

Type: Contest 34
Builder: Conyplex
Designer: D Zaal
Year built: 1974

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.

6,44.7,3.79854,52,4.19,60,4.45,75,4.65,90,4.61,110,4.31,120,4.04,135,3.57,150,3.1,158.8,2.89599
8,43.1,4.451065,52,4.95,60,5.22,75,5.46,90,5.43,110,5.19,120,4.92,135,4.49,150,4.02,166.1,3.646791
10,42.9,4.968992,52,5.56,60,5.89,75,6.14,90,6.14,110,5.96,120,5.69,135,5.22,150,4.77,171.5,4.337645
12,43.7,5.449764,52,6.03,60,6.3,75,6.51,90,6.53,110,6.46,120,6.3,135,5.92,150,5.43,174,4.957156
14,44.5,5.790392,52,6.28,60,6.51,75,6.71,90,6.8,110,6.74,120,6.64,135,6.41,150,6.05,174.2,5.558455
16,44.5,5.916575,52,6.39,60,6.63,75,6.86,90,7,110,6.96,120,6.88,135,6.7,150,6.47,176.8,6.089495
20,44.8,5.975444,52,6.45,60,6.72,75,7.05,90,7.27,110,7.38,120,7.31,135,7.13,150,6.95,179.3,6.730502

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.19	4.45	4.65	4.61	4.31	4.04	3.57	3.1
8	4.95	5.22	5.46	5.43	5.19	4.92	4.49	4.02
10	5.56	5.89	6.14	6.14	5.96	5.69	5.22	4.77
12	6.03	6.3	6.51	6.53	6.46	6.3	5.92	5.43
14	6.28	6.51	6.71	6.8	6.74	6.64	6.41	6.05
16	6.39	6.63	6.86	7	6.96	6.88	6.7	6.47
20	6.45	6.72	7.05	7.27	7.38	7.31	7.13	6.95

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.7°	2.7	158.8°	2.7
8	43.1°	3.25	166.1°	3.54
10	42.9°	3.64	171.5°	4.29
12	43.7°	3.94	174°	4.93
14	44.5°	4.13	174.2°	5.53
16	44.5°	4.22	176.8°	6.08
20	44.8°	4.24	179.3°	6.73

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