Sirena — ORC Rating | RegattaPages

GPH

535.3

OSN

524

LOA

12.96 m

Displacement

7623 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8589

Medium

1.1429

High

1.2881

Triple Offshore

Low

1.124

Medium

1.4115

High

1.5709

Boat Specifications

Dimensions

Length overall: 12.96 m
Beam: 3.91 m
Draft: 2.74 m
Displacement: 7623 kg
Crew weight: 1150 kg
Wetted surface: 34.77 m²

Sails

Mainsail: 62.45 m²
Genoa: 47.84 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 182.45 m²

Design

Type: SWAN 42
Builder: NAUTOR
Designer: SWAN NY/CLUB FRERS
Year built: 2006

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.

6,42.4,5.457337,52,6.11,60,6.55,75,7.29,90,7.55,110,7.23,120,6.62,135,5.86,143.1,5.339605,150,4.93
8,41,6.505814,52,7.3,60,7.56,75,8.03,90,8.25,110,8.01,120,7.83,135,7.29,145.4,6.499531,150,6.18
10,39.2,7.110187,52,7.85,60,8.04,75,8.29,90,8.63,110,8.49,120,8.44,135,8.09,148.9,7.369196,150,7.29
12,37.7,7.279864,52,8.07,60,8.28,75,8.52,90,8.9,110,9.09,120,9.02,135,8.63,150,8.04,151.8,7.920087
14,37.3,7.391824,52,8.16,60,8.4,75,8.79,90,9.13,110,9.67,120,9.57,135,9.27,150,8.44,151.9,8.309462
16,36.7,7.445973,52,8.22,60,8.47,75,8.96,90,9.34,110,10.03,120,10.2,135,10.01,150,8.88,177.7,7.856329
20,36.5,7.575976,52,8.37,60,8.63,75,9.09,90,9.83,110,10.65,120,11.1,135,11.85,143.2,11.064884,150,10.23

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.11	6.55	7.29	7.55	7.23	6.62	5.86	4.93
8	7.3	7.56	8.03	8.25	8.01	7.83	7.29	6.18
10	7.85	8.04	8.29	8.63	8.49	8.44	8.09	7.29
12	8.07	8.28	8.52	8.9	9.09	9.02	8.63	8.04
14	8.16	8.4	8.79	9.13	9.67	9.57	9.27	8.44
16	8.22	8.47	8.96	9.34	10.03	10.2	10.01	8.88
20	8.37	8.63	9.09	9.83	10.65	11.1	11.85	10.23

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	4.03	143.1°	4.27
8	41°	4.91	145.4°	5.35
10	39.2°	5.51	148.9°	6.31
12	37.7°	5.76	151.8°	6.98
14	37.3°	5.88	151.9°	7.33
16	36.7°	5.97	177.7°	7.85
20	36.5°	6.09	143.2°	8.86

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