SOUNDBITE — ORC Rating

GPH

741.9

OSN

719.5

LOA

7.142 m

Displacement

950 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6125

Medium

0.8318

High

0.9472

Triple Offshore

Low

0.7922

Medium

1.0253

High

1.1703

Boat Specifications

Dimensions

Length overall: 7.142 m
Beam: 2.38 m
Draft: 1.18 m
Displacement: 950 kg
Crew weight: 323 kg
Wetted surface: 11.24 m²

Sails

Mainsail: 18.08 m²
Genoa: 9.26 m²
Spinnaker: 30.07 m²
Asymmetric spinnaker: 0 m²

Design

Type: Sonar
Builder: Sonar (UK) Ltd
Designer: Kirby
Year built: 1979

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.

6,43.5,3.860076,52,4.29,60,4.55,75,4.77,90,4.91,110,4.94,120,4.78,135,4.31,147.7,3.714825,150,3.63
8,42.2,4.549108,52,5.1,60,5.34,75,5.52,90,5.73,110,5.76,120,5.66,135,5.23,150,4.58,151.7,4.508918
10,41.6,5.068213,52,5.58,60,5.75,75,5.9,90,6.2,110,6.25,120,6.14,135,5.87,150,5.38,154.4,5.211611
12,40.5,5.365555,52,5.85,60,6.03,75,6.22,90,6.59,110,6.79,120,6.65,135,6.31,150,5.93,173.6,5.403676
14,39.7,5.445805,52,6,60,6.26,75,6.59,90,6.8,110,7.36,120,7.22,135,6.8,150,6.34,180,5.86
16,40.1,5.49076,52,6.05,60,6.36,75,6.86,90,7.11,110,7.87,120,7.93,135,7.36,150,6.79,180,6.25
20,42.5,5.547438,52,6.04,60,6.38,75,7.04,90,7.78,110,8.72,120,9.6,135,8.97,150,7.91,180,7.11

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.29	4.55	4.77	4.91	4.94	4.78	4.31	3.63
8	5.1	5.34	5.52	5.73	5.76	5.66	5.23	4.58
10	5.58	5.75	5.9	6.2	6.25	6.14	5.87	5.38
12	5.85	6.03	6.22	6.59	6.79	6.65	6.31	5.93
14	6	6.26	6.59	6.8	7.36	7.22	6.8	6.34
16	6.05	6.36	6.86	7.11	7.87	7.93	7.36	6.79
20	6.04	6.38	7.04	7.78	8.72	9.6	8.97	7.91

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	2.8	147.7°	3.14
8	42.2°	3.37	151.7°	3.97
10	41.6°	3.79	154.4°	4.7
12	40.5°	4.08	173.6°	5.37
14	39.7°	4.19	180°	5.86
16	40.1°	4.2	180°	6.25
20	42.5°	4.09	180°	7.11

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