Sirena — ORC Rating | RegattaPages

GPH

536.2

OSN

523.9

LOA

12.96 m

Displacement

7553 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7687

Medium

1.0156

High

1.1441

Triple Offshore

Low

0.9971

Medium

1.2525

High

1.3961

Boat Specifications

Dimensions

Length overall: 12.96 m
Beam: 3.91 m
Draft: 2.73 m
Displacement: 7553 kg
Crew weight: 995 kg
Wetted surface: 34.68 m²

Sails

Mainsail: 62.12 m²
Genoa: 49.04 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 187.14 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.

6,42.4,5.497963,52,6.18,60,6.53,75,6.89,90,7.18,110,7.02,120,6.67,135,5.91,143,5.384183,150,4.96
8,40.9,6.522428,52,7.32,60,7.59,75,7.82,90,8.06,110,8.01,120,7.85,135,7.35,145,6.567767,150,6.21
10,39,7.06431,52,7.84,60,8.04,75,8.2,90,8.48,110,8.54,120,8.45,135,8.13,148.8,7.412047,150,7.32
12,37.7,7.241948,52,8.04,60,8.25,75,8.52,90,8.77,110,9.09,120,9.03,135,8.68,150,8.08,152,7.92799
14,37.5,7.361159,52,8.13,60,8.37,75,8.77,90,9.02,110,9.64,120,9.57,135,9.32,150,8.48,151.5,8.374894
16,36.8,7.430707,52,8.19,60,8.43,75,8.92,90,9.34,110,10.08,120,10.24,135,10.07,150,8.94,176,7.859144
20,36.8,7.568081,52,8.35,60,8.62,75,9.07,90,9.79,110,10.76,120,11.48,135,11.83,143.2,11.18977,150,10.34

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.18	6.53	6.89	7.18	7.02	6.67	5.91	4.96
8	7.32	7.59	7.82	8.06	8.01	7.85	7.35	6.21
10	7.84	8.04	8.2	8.48	8.54	8.45	8.13	7.32
12	8.04	8.25	8.52	8.77	9.09	9.03	8.68	8.08
14	8.13	8.37	8.77	9.02	9.64	9.57	9.32	8.48
16	8.19	8.43	8.92	9.34	10.08	10.24	10.07	8.94
20	8.35	8.62	9.07	9.79	10.76	11.48	11.83	10.34

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	4.06	143°	4.3
8	40.9°	4.93	145°	5.38
10	39°	5.49	148.8°	6.34
12	37.7°	5.73	152°	7
14	37.5°	5.84	151.5°	7.36
16	36.8°	5.95	176°	7.84
20	36.8°	6.06	143.2°	8.96

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