MARADENTRO — ORC Rating

GPH

640.9

OSN

619.4

LOA

14.26 m

Displacement

13810 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6745

Medium

0.9535

High

1.1636

Triple Offshore

Low

0.8807

Medium

1.2038

High

1.4064

Boat Specifications

Dimensions

Length overall: 14.26 m
Beam: 4.31 m
Draft: 2.11 m
Displacement: 13810 kg
Crew weight: 1000 kg
Wetted surface: 43.69 m²

Sails

Mainsail: 43.83 m²
Genoa: 74.1 m²
Spinnaker: 142.57 m²
Asymmetric spinnaker: 0 m²

Design

Type: NORTHWIND 47
Builder: NORTH WIND
Designer: M. PENNA
Year built: 1987

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.

6,45.9,4.425842,52,4.84,60,5.2,75,5.49,90,5.46,110,5.32,120,5.19,135,4.69,145.8,4.110845,150,3.92
8,44.1,5.277623,52,5.83,60,6.19,75,6.52,90,6.49,110,6.53,120,6.37,135,5.85,149.3,5.070638,150,5.04
10,43.4,5.945707,52,6.63,60,7.04,75,7.34,90,7.34,110,7.51,120,7.38,135,6.86,150,6.04,150.3,6.020965
12,43.7,6.611642,52,7.27,60,7.57,75,7.79,90,7.88,110,8.02,120,7.95,135,7.63,150,6.91,152.5,6.775566
14,42.8,6.991674,52,7.62,60,7.86,75,8.05,90,8.19,110,8.37,120,8.31,135,8.06,150,7.61,158.1,7.221102
16,42.1,7.170045,52,7.81,60,8.03,75,8.25,90,8.38,110,8.7,120,8.65,135,8.39,150,8.02,175.9,7.338782
20,41.7,7.326172,52,7.94,60,8.19,75,8.57,90,8.76,110,9.32,120,9.38,135,9.1,150,8.64,180,8.14

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.84	5.2	5.49	5.46	5.32	5.19	4.69	3.92
8	5.83	6.19	6.52	6.49	6.53	6.37	5.85	5.04
10	6.63	7.04	7.34	7.34	7.51	7.38	6.86	6.04
12	7.27	7.57	7.79	7.88	8.02	7.95	7.63	6.91
14	7.62	7.86	8.05	8.19	8.37	8.31	8.06	7.61
16	7.81	8.03	8.25	8.38	8.7	8.65	8.39	8.02
20	7.94	8.19	8.57	8.76	9.32	9.38	9.1	8.64

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45.9°	3.08	145.8°	3.4
8	44.1°	3.79	149.3°	4.36
10	43.4°	4.32	150.3°	5.23
12	43.7°	4.78	152.5°	6.01
14	42.8°	5.13	158.1°	6.7
16	42.1°	5.32	175.9°	7.32
20	41.7°	5.47	180°	8.14

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