Antidote — ORC Rating

GPH

596.3

OSN

583.9

LOA

6.45 m

Displacement

340 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7955

Medium

0.9931

High

1.1875

Triple Offshore

Low

1.0063

Medium

1.2543

High

1.4776

Boat Specifications

Dimensions

Length overall: 6.45 m
Beam: 2.34 m
Draft: 1.5 m
Displacement: 340 kg
Crew weight: 300 kg
Wetted surface: 7.55 m²

Sails

Mainsail: 15.72 m²
Genoa: 8.31 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 39.88 m²

Design

Type: Viper 640
Builder: Rondar Raceboats
Designer: Brian Bennett
Year built: 1993

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.

6,42.1,5.081028,52,5.6,60,5.78,75,5.92,90,5.92,110,6.02,120,5.91,135,5.52,143.1,5.089506,150,4.7
8,37.3,5.45587,52,6.15,60,6.47,75,6.85,90,6.79,110,7.06,120,7.13,135,6.49,150,5.77,151.5,5.655329
10,36.4,5.565952,52,6.39,60,6.77,75,7.43,90,7.92,110,7.82,120,8.09,135,7.82,148.7,6.659186,150,6.57
12,36.3,5.596031,52,6.5,60,6.93,75,7.74,90,8.54,110,8.55,120,8.85,135,9.34,141.9,8.577582,150,7.8
14,36.3,5.707704,52,6.69,60,7.13,75,7.95,90,8.95,110,9.74,120,9.79,135,10.43,141.1,10.36951,150,9.32
16,36.7,5.774683,52,6.84,60,7.38,75,8.32,90,9.23,110,10.65,120,10.75,135,11.42,144.2,11.910283,150,11.15
20,37.6,5.856444,52,6.96,60,7.57,75,8.78,90,10.05,110,11.67,120,12.8,135,13.53,149.8,14.486133,150,14.45

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.6	5.78	5.92	5.92	6.02	5.91	5.52	4.7
8	6.15	6.47	6.85	6.79	7.06	7.13	6.49	5.77
10	6.39	6.77	7.43	7.92	7.82	8.09	7.82	6.57
12	6.5	6.93	7.74	8.54	8.55	8.85	9.34	7.8
14	6.69	7.13	7.95	8.95	9.74	9.79	10.43	9.32
16	6.84	7.38	8.32	9.23	10.65	10.75	11.42	11.15
20	6.96	7.57	8.78	10.05	11.67	12.8	13.53	14.45

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.1°	3.77	143.1°	4.07
8	37.3°	4.34	151.5°	4.97
10	36.4°	4.48	148.7°	5.69
12	36.3°	4.51	141.9°	6.75
14	36.3°	4.6	141.1°	8.07
16	36.7°	4.63	144.2°	9.66
20	37.6°	4.64	149.8°	12.52

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