SIRAH — ORC Rating | RegattaPages

GPH

619.2

OSN

602.3

LOA

12.3 m

Displacement

7519 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6542

Medium

0.8811

High

1.0025

Triple Offshore

Low

0.8489

Medium

1.0947

High

1.2123

Boat Specifications

Dimensions

Length overall: 12.3 m
Beam: 3.9 m
Draft: 1.97 m
Displacement: 7519 kg
Crew weight: 550 kg
Wetted surface: 31.29 m²

Sails

Mainsail: 45.55 m²
Genoa: 37.7 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 93.44 m²

Design

Type: First 41S5
Builder: Beneteau
Designer: Berret
Year built: 1988

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.

6,44.5,4.893092,52,5.38,60,5.7,75,5.94,90,5.84,110,5.78,120,5.57,135,4.93,142.4,4.505928,150,4.13
8,41.8,5.71447,52,6.38,60,6.66,75,6.87,90,6.87,110,6.94,120,6.77,135,6.16,146.4,5.498719,150,5.29
10,40.3,6.241245,52,6.94,60,7.17,75,7.36,90,7.43,110,7.55,120,7.45,135,7.06,147.8,6.405157,150,6.26
12,39.5,6.505754,52,7.22,60,7.44,75,7.64,90,7.74,110,7.93,120,7.87,135,7.59,148.9,7.053874,150,6.98
14,39.1,6.636201,52,7.36,60,7.58,75,7.83,90,7.93,110,8.24,120,8.23,135,7.97,150,7.42,151.3,7.330591
16,38.9,6.707415,52,7.43,60,7.66,75,7.97,90,8.14,110,8.52,120,8.58,135,8.34,150,7.74,174.1,7.027224
20,38.9,6.771663,52,7.51,60,7.75,75,8.12,90,8.45,110,8.9,120,9.26,135,9.14,150,8.3,177.2,7.769275
24,39.8,6.781351,52,7.52,60,7.78,75,8.21,90,8.64,110,9.21,120,9.79,135,10.21,150,8.93,177.2,8.329945

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.38	5.7	5.94	5.84	5.78	5.57	4.93	4.13
8	6.38	6.66	6.87	6.87	6.94	6.77	6.16	5.29
10	6.94	7.17	7.36	7.43	7.55	7.45	7.06	6.26
12	7.22	7.44	7.64	7.74	7.93	7.87	7.59	6.98
14	7.36	7.58	7.83	7.93	8.24	8.23	7.97	7.42
16	7.43	7.66	7.97	8.14	8.52	8.58	8.34	7.74
20	7.51	7.75	8.12	8.45	8.9	9.26	9.14	8.3
24	7.52	7.78	8.21	8.64	9.21	9.79	10.21	8.93

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.5°	3.49	142.4°	3.57
8	41.8°	4.26	146.4°	4.58
10	40.3°	4.76	147.8°	5.42
12	39.5°	5.02	148.9°	6.04
14	39.1°	5.15	151.3°	6.43
16	38.9°	5.22	174.1°	6.99
20	38.9°	5.27	177.2°	7.76
24	39.8°	5.21	177.2°	8.32

Loading polar chart…