Iron Butterfly — ORC Rating

GPH

589

OSN

573.9

LOA

10.8 m

Displacement

5128 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6863

Medium

0.9198

High

1.0449

Triple Offshore

Low

0.8959

Medium

1.1461

High

1.2888

Boat Specifications

Dimensions

Length overall: 10.8 m
Beam: 3.56 m
Draft: 2.14 m
Displacement: 5128 kg
Crew weight: 630 kg
Wetted surface: 28.23 m²

Sails

Mainsail: 39.65 m²
Genoa: 31.08 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 125.44 m²

Design

Type: Sun Fast 3600
Builder: Jeanneau
Designer: Andrieu
Year built: 2013
Stability index: 127.9

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.

6,45.4,5.198297,52,5.7,60,6.12,75,6.49,90,6.52,110,6.1,120,5.86,135,5.17,143.4,4.708418,150,4.37
8,42.9,6.047427,52,6.72,60,7.04,75,7.29,90,7.34,110,7.15,120,7.04,135,6.52,147.3,5.71591,150,5.55
10,40.6,6.453556,52,7.2,60,7.48,75,7.75,90,7.83,110,7.79,120,7.71,135,7.38,147.8,6.759686,150,6.6
12,38.2,6.642431,52,7.42,60,7.69,75,8.08,90,8.29,110,8.32,120,8.27,135,7.93,150,7.33,150.1,7.324978
14,38.2,6.884205,52,7.6,60,7.81,75,8.31,90,8.7,110,8.81,120,8.86,135,8.47,149.6,7.767993,150,7.73
16,37.8,6.96066,52,7.72,60,7.98,75,8.46,90,9.01,110,9.14,120,9.48,135,9.05,150,8.1,173,7.183545
20,38.1,7.052679,52,7.82,60,8.13,75,8.69,90,9.41,110,10.09,120,10.43,135,10.62,150,8.88,174.8,7.982854

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.7	6.12	6.49	6.52	6.1	5.86	5.17	4.37
8	6.72	7.04	7.29	7.34	7.15	7.04	6.52	5.55
10	7.2	7.48	7.75	7.83	7.79	7.71	7.38	6.6
12	7.42	7.69	8.08	8.29	8.32	8.27	7.93	7.33
14	7.6	7.81	8.31	8.7	8.81	8.86	8.47	7.73
16	7.72	7.98	8.46	9.01	9.14	9.48	9.05	8.1
20	7.82	8.13	8.69	9.41	10.09	10.43	10.62	8.88

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45.4°	3.65	143.4°	3.78
8	42.9°	4.43	147.3°	4.81
10	40.6°	4.9	147.8°	5.72
12	38.2°	5.22	150.1°	6.35
14	38.2°	5.41	149.6°	6.7
16	37.8°	5.5	173°	7.13
20	38.1°	5.55	174.8°	7.95

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