Mad Jack — ORC Rating

GPH

572.2

OSN

556.8

LOA

10.66 m

Displacement

4101 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8142

Medium

1.0768

High

1.2157

Triple Offshore

Low

1.0455

Medium

1.3229

High

1.4842

Boat Specifications

Dimensions

Length overall: 10.66 m
Beam: 3.81 m
Draft: 2.6 m
Displacement: 4101 kg
Crew weight: 641 kg
Wetted surface: 26.8 m²

Sails

Mainsail: 47.77 m²
Genoa: 30.22 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 136.68 m²

Design

Type: Ross 35
Builder: Modern Concept
Designer: Murray Ross
Year built: 1994

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.

6,41.8,5.097414,52,5.74,60,6.03,75,6.28,90,6.32,110,6.42,120,6.26,135,5.6,143.3,5.088705,150,4.71
8,40.2,6.035643,52,6.77,60,7,75,7.15,90,7.34,110,7.44,120,7.34,135,6.89,146.2,6.125265,150,5.88
10,38.2,6.604256,52,7.3,60,7.46,75,7.6,90,7.7,110,8.07,120,7.98,135,7.59,149.5,6.917129,150,6.88
12,36.9,6.802681,52,7.53,60,7.75,75,8.01,90,8.04,110,8.55,120,8.66,135,8.2,150,7.51,151.3,7.421796
14,36.3,6.874061,52,7.63,60,7.91,75,8.34,90,8.49,110,8.86,120,9.26,135,8.88,148.6,8.083877,150,7.97
16,36.2,6.914838,52,7.69,60,7.99,75,8.53,90,8.91,110,9.17,120,9.72,135,9.68,150,8.43,177.1,7.399476
20,35.9,7.011985,52,7.85,60,8.16,75,8.69,90,9.41,110,9.96,120,10.69,135,11.94,141.6,11.062999,150,10.01

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.74	6.03	6.28	6.32	6.42	6.26	5.6	4.71
8	6.77	7	7.15	7.34	7.44	7.34	6.89	5.88
10	7.3	7.46	7.6	7.7	8.07	7.98	7.59	6.88
12	7.53	7.75	8.01	8.04	8.55	8.66	8.2	7.51
14	7.63	7.91	8.34	8.49	8.86	9.26	8.88	7.97
16	7.69	7.99	8.53	8.91	9.17	9.72	9.68	8.43
20	7.85	8.16	8.69	9.41	9.96	10.69	11.94	10.01

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.8°	3.8	143.3°	4.08
8	40.2°	4.61	146.2°	5.09
10	38.2°	5.19	149.5°	5.96
12	36.9°	5.44	151.3°	6.51
14	36.3°	5.54	148.6°	6.9
16	36.2°	5.58	177.1°	7.39
20	35.9°	5.68	141.6°	8.67

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