Majic Potion — ORC Rating

GPH

609.5

OSN

591.5

LOA

10.57 m

Displacement

4030 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6686

Medium

0.9021

High

1.0209

Triple Offshore

Low

0.8636

Medium

1.1099

High

1.2428

Boat Specifications

Dimensions

Length overall: 10.57 m
Beam: 3.34 m
Draft: 2.01 m
Displacement: 4030 kg
Crew weight: 320 kg
Wetted surface: 24.07 m²

Sails

Mainsail: 32.78 m²
Genoa: 23.48 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 108.47 m²

Design

Type: J-105
Builder: T.P.I.
Designer: Johnstone
Year built: 1993
Stability index: 117.8

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.

6,43,4.662587,52,5.17,60,5.45,75,5.94,90,6.13,110,5.95,120,5.83,135,5.24,143.9,4.752535,150,4.44
8,40.8,5.548253,52,6.18,60,6.43,75,6.86,90,7.04,110,7.03,120,6.96,135,6.51,147.8,5.755187,150,5.62
10,39.3,6.151141,52,6.81,60,6.99,75,7.26,90,7.5,110,7.57,120,7.57,135,7.3,148.9,6.680159,150,6.6
12,37.8,6.429118,52,7.12,60,7.29,75,7.46,90,7.82,110,7.96,120,8.08,135,7.86,150,7.26,150.5,7.215441
14,37.2,6.540872,52,7.27,60,7.47,75,7.71,90,8.04,110,8.38,120,8.54,135,8.43,148.6,7.790983,150,7.68
16,37,6.611276,52,7.35,60,7.57,75,7.91,90,8.21,110,8.79,120,8.92,135,9.06,146.6,8.420696,150,8.12
20,37.5,6.705713,52,7.42,60,7.68,75,8.14,90,8.56,110,9.53,120,9.85,135,10.79,142.1,10.303084,150,9.38

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.17	5.45	5.94	6.13	5.95	5.83	5.24	4.44
8	6.18	6.43	6.86	7.04	7.03	6.96	6.51	5.62
10	6.81	6.99	7.26	7.5	7.57	7.57	7.3	6.6
12	7.12	7.29	7.46	7.82	7.96	8.08	7.86	7.26
14	7.27	7.47	7.71	8.04	8.38	8.54	8.43	7.68
16	7.35	7.57	7.91	8.21	8.79	8.92	9.06	8.12
20	7.42	7.68	8.14	8.56	9.53	9.85	10.79	9.38

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.41	143.9°	3.84
8	40.8°	4.2	147.8°	4.87
10	39.3°	4.76	148.9°	5.72
12	37.8°	5.08	150.5°	6.28
14	37.2°	5.21	148.6°	6.65
16	37°	5.28	146.6°	7.03
20	37.5°	5.32	142.1°	8.13

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