CHRISTOPHER DRAGON — ORC Rating

GPH

477.6

OSN

467.7

LOA

12.548 m

Displacement

4238 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8542

Medium

1.1114

High

1.3116

Triple Offshore

Low

1.11

Medium

1.3996

High

1.6351

Boat Specifications

Dimensions

Length overall: 12.548 m
Beam: 4.19 m
Draft: 2.99 m
Displacement: 4238 kg
Crew weight: 825 kg
Wetted surface: 30.95 m²

Sails

Mainsail: 63.33 m²
Genoa: 43.73 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 189.24 m²

Design

Type: KER 40+
Builder: McConaghy
Designer: Jason Ker
Year built: 2015

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.

6,43.9,6.495028,52,7.26,60,7.71,75,8.05,90,8.08,110,7.67,120,7.15,135,6.4,141.2,5.928108,150,5.33
8,40.9,7.355923,52,8.16,60,8.48,75,8.91,90,8.99,110,8.52,120,8.42,135,7.98,143.5,7.302295,150,6.78
10,38.1,7.649933,52,8.52,60,8.92,75,9.62,90,9.99,110,9.43,120,9.48,135,8.87,149.2,7.951477,150,7.89
12,36.8,7.792876,52,8.77,60,9.25,75,10.08,90,10.73,110,10.26,120,10.33,135,9.98,150,8.79,151.5,8.613851
14,36,7.861392,52,8.97,60,9.52,75,10.47,90,11.23,110,11.33,120,11.16,135,11.3,147,10.003928,150,9.69
16,35.2,7.979001,52,9.1,60,9.7,75,10.75,90,11.66,110,12.47,120,12.29,135,12.63,145.5,11.466691,150,10.92
20,35.2,8.076903,52,9.46,60,10.08,75,11.05,90,12.23,110,13.95,120,14.28,135,14.75,142.8,15.153229,150,13.94

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	7.26	7.71	8.05	8.08	7.67	7.15	6.4	5.33
8	8.16	8.48	8.91	8.99	8.52	8.42	7.98	6.78
10	8.52	8.92	9.62	9.99	9.43	9.48	8.87	7.89
12	8.77	9.25	10.08	10.73	10.26	10.33	9.98	8.79
14	8.97	9.52	10.47	11.23	11.33	11.16	11.3	9.69
16	9.1	9.7	10.75	11.66	12.47	12.29	12.63	10.92
20	9.46	10.08	11.05	12.23	13.95	14.28	14.75	13.94

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.9°	4.68	141.2°	4.62
8	40.9°	5.56	143.5°	5.87
10	38.1°	6.02	149.2°	6.83
12	36.8°	6.24	151.5°	7.57
14	36°	6.36	147°	8.39
16	35.2°	6.52	145.5°	9.45
20	35.2°	6.6	142.8°	12.07

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