Sirena — ORC Rating | RegattaPages

GPH

617.5

OSN

599.5

LOA

11.924 m

Displacement

7235 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6456

Medium

0.887

High

1.0244

Triple Offshore

Low

0.8391

Medium

1.1025

High

1.2363

Boat Specifications

Dimensions

Length overall: 11.924 m
Beam: 3.77 m
Draft: 1.9 m
Displacement: 7235 kg
Crew weight: 680 kg
Wetted surface: 31.56 m²

Sails

Mainsail: 47.2 m²
Genoa: 36.2 m²
Spinnaker: 100.57 m²
Asymmetric spinnaker: 0 m²

Design

Type: First 40.7x1.90
Builder: Beneteau
Designer: Bruce Farr
Year built: 1997
Stability index: 120.6

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.

6,44.4,4.674776,52,5.18,60,5.53,75,5.82,90,5.76,110,5.75,120,5.58,135,5.03,144.2,4.524921,150,4.24
8,43,5.565023,52,6.2,60,6.56,75,6.84,90,6.86,110,6.99,120,6.83,135,6.22,148.7,5.442041,150,5.37
10,42.3,6.259877,52,6.95,60,7.22,75,7.41,90,7.53,110,7.66,120,7.57,135,7.17,150,6.38,151.1,6.316647
12,41.7,6.643111,52,7.31,60,7.53,75,7.73,90,7.79,110,8.07,120,8.01,135,7.71,150,7.21,155.6,6.92886
14,41.1,6.754574,52,7.44,60,7.68,75,7.95,90,8.07,110,8.44,120,8.44,135,8.12,150,7.7,164.9,7.198547
16,40.8,6.776795,52,7.5,60,7.75,75,8.11,90,8.35,110,8.7,120,8.88,135,8.57,150,8.09,177.2,7.498953
20,41.4,6.972301,52,7.59,60,7.81,75,8.25,90,8.79,110,9.1,120,9.52,135,9.56,150,8.95,178.1,8.254538

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.18	5.53	5.82	5.76	5.75	5.58	5.03	4.24
8	6.2	6.56	6.84	6.86	6.99	6.83	6.22	5.37
10	6.95	7.22	7.41	7.53	7.66	7.57	7.17	6.38
12	7.31	7.53	7.73	7.79	8.07	8.01	7.71	7.21
14	7.44	7.68	7.95	8.07	8.44	8.44	8.12	7.7
16	7.5	7.75	8.11	8.35	8.7	8.88	8.57	8.09
20	7.59	7.81	8.25	8.79	9.1	9.52	9.56	8.95

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.4°	3.34	144.2°	3.67
8	43°	4.07	148.7°	4.65
10	42.3°	4.63	151.1°	5.53
12	41.7°	4.96	155.6°	6.31
14	41.1°	5.09	164.9°	6.95
16	40.8°	5.13	177.2°	7.49
20	41.4°	5.23	178.1°	8.25

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