SECRET MEN'S BUSINESS #1 — ORC Rating

GPH

533.7

OSN

521

LOA

12.75 m

Displacement

5730 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.787

Medium

1.022

High

1.1483

Triple Offshore

Low

1.0093

Medium

1.2543

High

1.3971

Boat Specifications

Dimensions

Length overall: 12.75 m
Beam: 3.82 m
Draft: 2.79 m
Displacement: 5730 kg
Crew weight: 825 kg
Wetted surface: 31.01 m²

Sails

Mainsail: 60.59 m²
Genoa: 42.73 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 179.88 m²

Design

Type: MBD 42
Builder: P BOLTON
Designer: IAIN MURRAY ASSOC
Year built: 1996
Stability index: 125.4

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.

6,42,5.651657,52,6.32,60,6.62,75,6.88,90,7.11,110,6.93,120,6.62,135,5.98,143.3,5.450403,150,5.05
8,40,6.605361,52,7.35,60,7.56,75,7.72,90,7.97,110,7.92,120,7.81,135,7.35,146,6.610074,150,6.32
10,37.8,6.998627,52,7.8,60,8,75,8.17,90,8.4,110,8.52,120,8.48,135,8.14,149.8,7.381911,150,7.37
12,37,7.174737,52,7.99,60,8.22,75,8.5,90,8.66,110,9.05,120,9.05,135,8.8,150,8.09,151.4,7.995599
14,36.9,7.290374,52,8.1,60,8.35,75,8.73,90,8.95,110,9.52,120,9.57,135,9.49,149.6,8.660732,150,8.62
16,36.6,7.336661,52,8.17,60,8.44,75,8.87,90,9.25,110,9.92,120,10.2,135,10.3,147.1,9.45666,150,9.17
20,37,7.412643,52,8.25,60,8.55,75,9.07,90,9.66,110,10.66,120,11.48,135,12.26,143.2,11.789222,150,10.9

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.32	6.62	6.88	7.11	6.93	6.62	5.98	5.05
8	7.35	7.56	7.72	7.97	7.92	7.81	7.35	6.32
10	7.8	8	8.17	8.4	8.52	8.48	8.14	7.37
12	7.99	8.22	8.5	8.66	9.05	9.05	8.8	8.09
14	8.1	8.35	8.73	8.95	9.52	9.57	9.49	8.62
16	8.17	8.44	8.87	9.25	9.92	10.2	10.3	9.17
20	8.25	8.55	9.07	9.66	10.66	11.48	12.26	10.9

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	4.2	143.3°	4.37
8	40°	5.06	146°	5.48
10	37.8°	5.53	149.8°	6.38
12	37°	5.73	151.4°	7.02
14	36.9°	5.83	149.6°	7.47
16	36.6°	5.89	147.1°	7.94
20	37°	5.92	143.2°	9.44

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