GONTZI — ORC Rating | RegattaPages

GPH

550.5

OSN

537.4

LOA

8.5 m

Displacement

900 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7598

Medium

0.9635

High

1.1469

Triple Offshore

Low

0.9676

Medium

1.2087

High

1.427

Boat Specifications

Dimensions

Length overall: 8.5 m
Beam: 2.22 m
Draft: 1.77 m
Displacement: 900 kg
Crew weight: 480 kg
Wetted surface: 11.6 m²

Sails

Mainsail: 25.28 m²
Genoa: 13.46 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 68.55 m²

Design

Type: ONYX
Builder: STEINMAYER
Designer: CANTZ
Year built: 2005

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.

6,42.4,5.457337,52,6.12,60,6.4,75,6.61,90,6.58,110,6.62,120,6.51,135,5.94,142,5.444088,150,4.96
8,39,6.137843,52,6.8,60,7.02,75,7.29,90,7.31,110,7.54,120,7.51,135,7.01,147.5,6.355293,150,6.19
10,36.9,6.327494,52,7.13,60,7.51,75,8.02,90,8.16,110,8.26,120,8.56,135,8.06,150,7.08,152.5,6.854482
12,36.4,6.410784,52,7.34,60,7.79,75,8.55,90,9.06,110,8.99,120,9.32,135,9.35,148,8.089164,150,7.92
14,36,6.476996,52,7.47,60,7.96,75,8.88,90,9.78,110,9.8,120,10.1,135,10.82,140.5,10.341817,150,9.21
16,35.8,6.571616,52,7.7,60,8.17,75,9.11,90,10.24,110,10.84,120,11.03,135,11.9,143,11.694947,150,10.78
20,36.8,6.643926,52,7.87,60,8.51,75,9.78,90,10.78,110,12.85,120,13.02,135,13.95,147.8,14.4766,150,14.14

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.12	6.4	6.61	6.58	6.62	6.51	5.94	4.96
8	6.8	7.02	7.29	7.31	7.54	7.51	7.01	6.19
10	7.13	7.51	8.02	8.16	8.26	8.56	8.06	7.08
12	7.34	7.79	8.55	9.06	8.99	9.32	9.35	7.92
14	7.47	7.96	8.88	9.78	9.8	10.1	10.82	9.21
16	7.7	8.17	9.11	10.24	10.84	11.03	11.9	10.78
20	7.87	8.51	9.78	10.78	12.85	13.02	13.95	14.14

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	4.03	142°	4.29
8	39°	4.77	147.5°	5.36
10	36.9°	5.06	152.5°	6.08
12	36.4°	5.16	148°	6.86
14	36°	5.24	140.5°	7.98
16	35.8°	5.33	143°	9.34
20	36.8°	5.32	147.8°	12.25

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