FAST TANGO — ORC Rating

GPH

617.8

OSN

603.1

LOA

12.11 m

Displacement

7760 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6686

Medium

0.8898

High

1.0132

Triple Offshore

Low

0.8608

Medium

1.0902

High

1.206

Boat Specifications

Dimensions

Length overall: 12.11 m
Beam: 3.83 m
Draft: 2.1 m
Displacement: 7760 kg
Crew weight: 840 kg
Wetted surface: 30.07 m²

Sails

Mainsail: 36.37 m²
Genoa: 63.13 m²
Spinnaker: 127.96 m²
Asymmetric spinnaker: 121.18 m²

Design

Type: NORTH AMERICAN 40
Builder: MORGAN
Designer: CARTER
Year built: 1977

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.

6,42,4.844278,52,5.43,60,5.73,75,5.98,90,6.01,110,5.81,120,5.51,135,5.02,146,4.487131,150,4.3
8,41.6,5.710097,52,6.4,60,6.66,75,6.83,90,6.96,110,6.85,120,6.65,135,6.14,150,5.34,150.5,5.308175
10,40.9,6.310747,52,6.92,60,7.09,75,7.21,90,7.38,110,7.33,120,7.27,135,6.99,150,6.293118
12,39.8,6.534046,52,7.14,60,7.3,75,7.46,90,7.67,110,7.68,120,7.64,135,7.42,150,7.01,157,6.702844
14,39,6.613944,52,7.24,60,7.42,75,7.65,90,7.9,110,8.01,120,8.02,135,7.78,150,7.41,180,6.77
16,38.6,6.666492,52,7.29,60,7.49,75,7.8,90,8.06,110,8.31,120,8.37,135,8.16,150,7.74,180,7.24
20,38.6,6.653696,52,7.32,60,7.55,75,7.95,90,8.32,110,8.8,120,8.9,135,8.89,150,8.44,180,7.89

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.43	5.73	5.98	6.01	5.81	5.51	5.02	4.3
8	6.4	6.66	6.83	6.96	6.85	6.65	6.14	5.34
10	6.92	7.09	7.21	7.38	7.33	7.27	6.99	6.29
12	7.14	7.3	7.46	7.67	7.68	7.64	7.42	7.01
14	7.24	7.42	7.65	7.9	8.01	8.02	7.78	7.41
16	7.29	7.49	7.8	8.06	8.31	8.37	8.16	7.74
20	7.32	7.55	7.95	8.32	8.8	8.9	8.89	8.44

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.6	146°	3.72
8	41.6°	4.27	150.5°	4.62
10	40.9°	4.77	150°	5.45
12	39.8°	5.02	157°	6.17
14	39°	5.14	180°	6.77
16	38.6°	5.21	180°	7.24
20	38.6°	5.2	180°	7.89

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