Iron Butterfly — ORC Rating

GPH

608.7

OSN

590.2

LOA

10.8 m

Displacement

5526 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6565

Medium

0.9059

High

1.051

Triple Offshore

Low

0.8521

Medium

1.1157

High

1.263

Boat Specifications

Dimensions

Length overall: 10.8 m
Beam: 3.55 m
Draft: 2.22 m
Displacement: 5526 kg
Crew weight: 550 kg
Wetted surface: 28.89 m²

Sails

Mainsail: 38.74 m²
Genoa: 31.08 m²
Spinnaker: 105.71 m²
Asymmetric spinnaker: 125.44 m²

Design

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

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.

6,43.1,4.588021,52,5.13,60,5.43,75,5.68,90,5.89,110,6.01,120,5.88,135,5.24,141,4.928289,150,4.42
8,41.2,5.40925,52,6.11,60,6.42,75,6.67,90,7.04,110,7.17,120,7.05,135,6.52,149,5.553175,150,5.5
10,40.5,6.128305,52,6.86,60,7.09,75,7.26,90,7.54,110,7.74,120,7.66,135,7.35,148.2,6.694963,150,6.57
12,39.4,6.587005,52,7.28,60,7.45,75,7.6,90,7.75,110,8.18,120,8.16,135,7.82,150,7.35,157,7.028752
14,38.2,6.706056,52,7.46,60,7.66,75,7.87,90,7.92,110,8.51,120,8.7,135,8.33,150,7.79,172,7.119284
16,38.1,6.785821,52,7.53,60,7.75,75,8.1,90,8.23,110,8.78,120,9.19,135,8.9,150,8.25,180,7.55
20,38.6,6.884017,52,7.57,60,7.8,75,8.3,90,8.82,110,9.31,120,9.9,135,10.37,150,9.33,180,8.4

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.13	5.43	5.68	5.89	6.01	5.88	5.24	4.42
8	6.11	6.42	6.67	7.04	7.17	7.05	6.52	5.5
10	6.86	7.09	7.26	7.54	7.74	7.66	7.35	6.57
12	7.28	7.45	7.6	7.75	8.18	8.16	7.82	7.35
14	7.46	7.66	7.87	7.92	8.51	8.7	8.33	7.79
16	7.53	7.75	8.1	8.23	8.78	9.19	8.9	8.25
20	7.57	7.8	8.3	8.82	9.31	9.9	10.37	9.33

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.1°	3.35	141°	3.83
8	41.2°	4.07	149°	4.76
10	40.5°	4.66	148.2°	5.69
12	39.4°	5.09	157°	6.47
14	38.2°	5.27	172°	7.05
16	38.1°	5.34	180°	7.55
20	38.6°	5.38	180°	8.4

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