FAST TANGO — ORC Rating

GPH

618.1

OSN

602.3

LOA

12.11 m

Displacement

7760 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6662

Medium

0.8918

High

1.0194

Triple Offshore

Low

0.8574

Medium

1.0911

High

1.2087

Boat Specifications

Dimensions

Length overall: 12.11 m
Beam: 3.83 m
Draft: 2.1 m
Displacement: 7760 kg
Crew weight: 930 kg
Wetted surface: 30.32 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
Stability index: 125.8

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.

6,42.4,4.834416,52,5.39,60,5.69,75,5.92,90,5.98,110,5.76,120,5.5,135,5.02,145.1,4.535745,150,4.3
8,41.8,5.687641,52,6.37,60,6.63,75,6.8,90,6.95,110,6.83,120,6.66,135,6.14,148.7,5.406931,150,5.33
10,41.1,6.343196,52,6.92,60,7.08,75,7.2,90,7.38,110,7.34,120,7.27,135,6.99,150,6.3,150.2,6.280499
12,39.6,6.541095,52,7.15,60,7.31,75,7.45,90,7.67,110,7.7,120,7.66,135,7.42,150,7.02,157.4,6.704865
14,38.8,6.646667,52,7.26,60,7.44,75,7.65,90,7.91,110,8.03,120,8.04,135,7.78,150,7.42,169.4,6.887533
16,38.2,6.693331,52,7.32,60,7.52,75,7.81,90,8.08,110,8.31,120,8.4,135,8.16,150,7.75,177.2,7.238642
20,38.2,6.718781,52,7.37,60,7.59,75,7.98,90,8.33,110,8.79,120,8.96,135,8.89,150,8.47,178.1,7.884335

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.39	5.69	5.92	5.98	5.76	5.5	5.02	4.3
8	6.37	6.63	6.8	6.95	6.83	6.66	6.14	5.33
10	6.92	7.08	7.2	7.38	7.34	7.27	6.99	6.3
12	7.15	7.31	7.45	7.67	7.7	7.66	7.42	7.02
14	7.26	7.44	7.65	7.91	8.03	8.04	7.78	7.42
16	7.32	7.52	7.81	8.08	8.31	8.4	8.16	7.75
20	7.37	7.59	7.98	8.33	8.79	8.96	8.89	8.47

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.57	145.1°	3.72
8	41.8°	4.24	148.7°	4.62
10	41.1°	4.78	150.2°	5.45
12	39.6°	5.04	157.4°	6.19
14	38.8°	5.18	169.4°	6.77
16	38.2°	5.26	177.2°	7.23
20	38.2°	5.28	178.1°	7.88

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