SECRET MEN'S BUSINESS #1 — ORC Rating

GPH

535.7

OSN

521.6

LOA

12.75 m

Displacement

5686 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8709

Medium

1.1485

High

1.2986

Triple Offshore

Low

1.1204

Medium

1.4123

High

1.5778

Boat Specifications

Dimensions

Length overall: 12.75 m
Beam: 3.82 m
Draft: 2.78 m
Displacement: 5686 kg
Crew weight: 825 kg
Wetted surface: 30.83 m²

Sails

Mainsail: 60.59 m²
Genoa: 39.87 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 179.88 m²

Design

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

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.

6,42.2,5.467029,52,6.15,60,6.5,75,6.8,90,6.74,110,6.88,120,6.69,135,6,142.7,5.481012,150,5.04
8,41.1,6.56879,52,7.34,60,7.58,75,7.74,90,7.79,110,7.98,120,7.9,135,7.44,144.5,6.706665,150,6.3
10,38.9,7.105748,52,7.83,60,8.03,75,8.21,90,8.22,110,8.56,120,8.58,135,8.18,149.4,7.423827,150,7.38
12,37.7,7.241948,52,8.01,60,8.26,75,8.6,90,8.69,110,8.92,120,9.21,135,8.85,150,8.12,152.1,7.954598
14,37.2,7.306694,52,8.1,60,8.38,75,8.87,90,9.16,110,9.24,120,9.66,135,9.59,149.4,8.666941,150,8.62
16,36.8,7.393241,52,8.15,60,8.45,75,9.01,90,9.52,110,9.61,120,10.05,135,10.47,147.3,9.471061,150,9.2
20,36.7,7.48339,52,8.33,60,8.67,75,9.17,90,9.91,110,10.4,120,10.94,135,12.24,141.9,12.110276,150,11

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.15	6.5	6.8	6.74	6.88	6.69	6	5.04
8	7.34	7.58	7.74	7.79	7.98	7.9	7.44	6.3
10	7.83	8.03	8.21	8.22	8.56	8.58	8.18	7.38
12	8.01	8.26	8.6	8.69	8.92	9.21	8.85	8.12
14	8.1	8.38	8.87	9.16	9.24	9.66	9.59	8.62
16	8.15	8.45	9.01	9.52	9.61	10.05	10.47	9.2
20	8.33	8.67	9.17	9.91	10.4	10.94	12.24	11

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.2°	4.05	142.7°	4.36
8	41.1°	4.95	144.5°	5.46
10	38.9°	5.53	149.4°	6.39
12	37.7°	5.73	152.1°	7.03
14	37.2°	5.82	149.4°	7.46
16	36.8°	5.92	147.3°	7.97
20	36.7°	6	141.9°	9.53

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