WITCHCRAFT — ORC Rating

GPH

562.1

OSN

545.6

LOA

12.12 m

Displacement

7130 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7303

Medium

0.9862

High

1.1293

Triple Offshore

Low

0.9388

Medium

1.2018

High

1.3441

Boat Specifications

Dimensions

Length overall: 12.12 m
Beam: 3.68 m
Draft: 2.52 m
Displacement: 7130 kg
Crew weight: 850 kg
Wetted surface: 32.52 m²

Sails

Mainsail: 55.28 m²
Genoa: 41.74 m²
Spinnaker: 142.7 m²
Asymmetric spinnaker: 0 m²

Design

Type: SUMMIT 40 KING 2.5
Builder: King Marine
Designer: Mills
Year built: 2008
Stability index: 143.5

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.

6,42.9,5.242014,52,5.84,60,6.17,75,6.44,90,6.35,110,6.32,120,6.18,135,5.59,142.8,5.147327,150,4.73
8,41.2,6.206682,52,6.96,60,7.23,75,7.41,90,7.4,110,7.54,120,7.44,135,6.93,146.6,6.15681,150,5.93
10,39.6,6.852575,52,7.57,60,7.75,75,7.87,90,7.88,110,8.11,120,8.06,135,7.76,150,7.03,150.5,6.98565
12,38.2,7.07508,52,7.82,60,8,75,8.18,90,8.21,110,8.5,120,8.55,135,8.25,150,7.76,156.9,7.436225
14,37.6,7.20696,52,7.93,60,8.14,75,8.43,90,8.54,110,8.78,120,9.08,135,8.77,150,8.22,167.6,7.607465
16,37,7.237344,52,7.99,60,8.22,75,8.63,90,8.88,110,9.05,120,9.45,135,9.37,150,8.71,177.2,7.949491
20,36.6,7.386486,52,8.11,60,8.33,75,8.83,90,9.43,110,9.55,120,10.1,135,10.92,150,9.88,175.4,8.858534

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.84	6.17	6.44	6.35	6.32	6.18	5.59	4.73
8	6.96	7.23	7.41	7.4	7.54	7.44	6.93	5.93
10	7.57	7.75	7.87	7.88	8.11	8.06	7.76	7.03
12	7.82	8	8.18	8.21	8.5	8.55	8.25	7.76
14	7.93	8.14	8.43	8.54	8.78	9.08	8.77	8.22
16	7.99	8.22	8.63	8.88	9.05	9.45	9.37	8.71
20	8.11	8.33	8.83	9.43	9.55	10.1	10.92	9.88

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	3.84	142.8°	4.1
8	41.2°	4.67	146.6°	5.14
10	39.6°	5.28	150.5°	6.08
12	38.2°	5.56	156.9°	6.84
14	37.6°	5.71	167.6°	7.43
16	37°	5.78	177.2°	7.94
20	36.6°	5.93	175.4°	8.83

Loading polar chart…